Pan American Energy LLC, Argentine Branch



 Translation from the original prepared in Spanish for publication in Argentina

PAN AMERICAN ENERGY LLC
(ARGENTINE BRANCH)

FINANCIAL STATEMENTS AS OF SEPTEMBER 30, 2007
AND COMPARATIVE INFORMATION

CONTENTS                                          Page
                                               -----------

Review report on interim financial statements       2
Corporate information                               4
Balance sheet                                       5
Statement of income                                 6
Statement of cash flows                             7
Notes to financial statements                       8
Exhibits A, B, C, D, E, F, G, H and I              24
Reporting summary                                  39
Supplementary information required by the          44
Buenos Aires Stock Exchange

REVIEW REPORT ON INTERIM FINANCIAL STATEMENTS

To the Legal Representative of
Pan American Energy LLC (Argentine Branch)
Av. Leandro N. Alem 1180 - 11th Floor
Buenos Aires
C.U.I.T.: 30-69554247-6

We reviewed the accompanying balance sheet of Pan American Energy LLC (Argentine
Branch) as of September 30, 2007, and the related statements of income and cash
flows, notes 1 to 15 and exhibits A, B, C, D, E, F, G, H and I for the
nine-month period then ended, comparative with the same period of the prior
year, and in the case of the balance sheet and the related notes and exhibits,
with the financial statements as of December 31, 2006. The preparation of these
financial statements is the responsibility of the Legal Representative of the
Branch.

We conducted our review in accordance with auditing standards generally accepted
in the Republic of Argentina applicable to the limited scope review of interim
financial statements. A review of interim financial information consists
principally in applying analytical procedures to the accounting data and making
inquiries of the individuals responsible for its preparation. As a review is
substantially less in scope than an audit of annual financial statements, we do
not express an opinion on the financial position of the Branch as of September
30, 2007, nor on the results of its operations and the cash flows for the
nine-month period then ended.

In relation to the financial statements as of December 31, 2006, presented for
comparative purposes, we issued an unqualified opinion on March 9, 2007. In
addition, on August 11, 2006, we issued an unmodified review report on the
financial statements as of June 30, 2006, also presented for comparative
purposes.

Based on our review, we report that the financial statements as of September 30,
2007 referred to in the first paragraph consider all the significant facts and
circumstances of which we became aware during our review and in relation to them
we have no significant observations.

In compliance with rules and regulations in force, we report that:

a)the financial statements comply with the provisions of the
  Corporations Law and the regulations on accounting documentation
  of the National Securities Commission, they are transcribed in the
  Inventory Book and they derive from the accounting records of the
  Branch maintained in the Republic of Argentina timely authorized
  by the Inspection Board of Legal Entities (IGJ). Following its
  submission of the special report required by section 287 of
  Resolution 7/2005 of the IGJ, the Branch has not received the
  certification from such authorities acknowledging compliance.
  The information systems used to process the financial information
  included in the financial statements are maintained under the
  security and integrity conditions based on which they were
  authorized;

b)we read the reporting summary (sections "Balance sheet items",
  "Income statement items", "Statistical data" and "Ratios") and the
  supplementary information to the financial statements required by
  section 68 of the regulations of the Buenos Aires Stock Exchange
  and, based on our review as far as it relates to our area of
  responsibility, we have no observations, and

c)as of September 30, 2007, the accrued liability for pension
  contributions arising from the accounting records amounted to
  $ 3,704,511, no amounts being due as of that date.

Buenos Aires, November 9, 2007

SIBILLE

Graciela C. Laso
Partner

FINANCIAL STATEMENTS as of September 30, 2007 for the nine-month period
beginning January 1, 2007 and ended September 30, 2007 and comparative
information

Stated in pesos

Legal address of the Branch: Av. Leandro N. Alem 1180 - 11th floor - Buenos
Aires

Main activity of the Branch: Oil and gas exploration and production

Date of registration with the Public Registry of Commerce: October 17, 1997

Registration number with the Inspection Board of Legal Entities: 1868, Book 54,
Volume B of Foreign Companies

Capital registered with the Inspection Board of Legal Entities: $ 200,000,000
under number 1257, Book 57, Volume B of Foreign Companies, and $ 21,779,007
under number 2106, Book 58, Volume B of Foreign Companies (Note 8)

Date of registration of capital with the Inspection Board of Legal Entities:
$ 200,000,000 on July 11, 2003 and $ 21,779,007 on December 12, 2005

Subscribed capital (paid in full): $ 221,779,007

HEAD OFFICE

Name: Pan American Energy LLC

Legal address: The Corporation Trust Company, Trust Corporation Center, 1209
Orange Street, Wilmington, Delaware - 19801 - United States of America

Main activity: Oil and gas exploration and production

PAN AMERICAN ENERGY LLC (ARGENTINE BRANCH)
BALANCE SHEET as of September 30, 2007 and as of December 31, 2006 (in
 pesos)

                                            09/30/2007    12/31/2006
                                           ------------- -------------
ASSETS
CURRENT ASSETS
Cash on hand and in banks (Note 4 a)          29,139,494    34,350,572
Investments (Exhibit C)                      410,123,691   215,056,665
Accounts receivable (Note 4 b)               574,485,809   737,519,309
Other receivables (Note 4 c)                 105,151,782   117,891,798
Inventories (Note 4 d)                       136,309,803   130,809,611
                                           ------------- -------------

Total current assets                       1,255,210,579 1,235,627,955
                                           ------------- -------------

NON CURRENT ASSETS
Other receivables (Note 4 e)                  28,307,648    28,915,445
Investments (Exhibit C)                        9,898,827     8,719,558
Property, plant and equipment (Exhibit A)  6,877,962,402 5,870,488,156
Intangible assets (Exhibit B)                    502,501     1,918,767
                                           ------------- -------------

Total non current assets                   6,916,671,378 5,910,041,926
                                           ------------- -------------

Total assets                               8,171,881,957 7,145,669,881
                                           ============= =============

LIABILITIES
CURRENT LIABILITIES
Accounts payable (Note 4 f)                  683,162,998   661,464,349
Loans (Note 4 g)                             459,491,984   877,022,350
Payroll and social security contributions     31,697,838    32,833,398
Taxes payable (Note 4 h)                     229,830,099   465,157,941
Provision for future compensation of
 personnel (Exhibit D)                         2,018,028     1,968,408
                                           ------------- -------------

Total current liabilities                  1,406,200,947 2,038,446,446
                                           ------------- -------------

NON CURRENT LIABILITIES
Accounts payable (Note 4 i)                   58,668,462    32,579,735
Loans (Note 4 j)                           2,985,507,000 2,265,642,982
Other liabilities (Note 3.2.j)               114,216,919    97,036,602
Deferred tax (Note 3.2.h and 11)             391,128,457   441,951,134
Provision for future compensation of
 personnel (Exhibit D)                        11,599,540     9,797,018
Provision for environmental remediation
 (Exhibit D)                                 108,912,084   122,553,250
Accruals (Exhibit D)                          21,935,293    19,903,786
                                           ------------- -------------

Total non current liabilities              3,691,967,755 2,989,464,507
                                           ------------- -------------

Total liabilities                          5,098,168,702 5,027,910,953

Account with Head Office (Note 7)          2,612,474,248 1,656,519,921
Capital allocated to the Branch (Note 8)     221,779,007   221,779,007
Capital adjustment                           239,460,000   239,460,000
                                           ------------- -------------

Total                                      8,171,881,957 7,145,669,881
                                           ============= =============
The accompanying notes and exhibits are an integral part of these
 financial statements.

PAN AMERICAN ENERGY LLC (ARGENTINE BRANCH)
STATEMENT OF INCOME for the period beginning January 1 and ended
 September 30, 2007 comparative with the same period of the prior year
 (in pesos)
                           2007                        2006
                       (9 months)                  (9 months)
              --------------------------------------------------------

Sales                       3,999,481,289               4,002,097,366
Cost of sales
 (Exhibit E)               (1,964,404,681)             (1,749,613,593)
                           ---------------             ---------------

Gross profit                2,035,076,608               2,252,483,773

Administrative
 expenses
 (Exhibit G)               ( 204,238,922)              ( 163,278,464)
                           ---------------             ---------------

Operating
 income                     1,830,837,686               2,089,205,309

Financial
 results
 Generated by
  assets
  Interest     27,417,126                  45,063,238
  Exchange
   gains
   (losses)    17,885,579                  30,318,370
  Other
   financial
   results     ( 374,417)    44,928,288      845,506     76,227,114
              -------------               -------------

 Generated by
  liabilities
  Interest    (195,209,659)               (120,057,375)
  Exchange
   gains
   (losses)   ( 77,003,694)               ( 52,121,112)
  Other
   financial
   results    ( 36,756,414)( 308,969,767) ( 7,632,635) ( 179,811,122)
              -------------               -------------

Other income
 and expenses
 - net                      ( 48,567,708)               ( 36,853,241)
                           ---------------             ---------------

Income before
 income tax                 1,518,228,499               1,948,768,060

Income tax
 expense -
 current (Note
 3.2.h and 11)             ( 578,842,019)              ( 727,581,754)

Income tax
 benefit -
 deferred
 (Note 3.2.h
 and 11)                     50,822,677                  45,461,507
                           ---------------             ---------------

Net income
 (Note 7)                    990,209,157                1,266,647,813
                           ===============             ===============
The accompanying notes and exhibits are an integral part of these
 financial statements.

PAN AMERICAN ENERGY LLC (ARGENTINE BRANCH)
STATEMENT OF CASH FLOWS for the period beginning January 1 and ended
 September 30, 2007 comparative with the same period of the prior year
 (in pesos)
                                            2007            2006
                                       --------------- ---------------
                                         (9 months)      (9 months)
Cash provided by operations:

  Net income                               990,209,157   1,266,647,813

  Adjustment to reconcile net income
   with the cash generated by
   operations

  Depreciation of property, plant and
   equipment                               570,488,735     481,912,961
  Amortization of intangible assets          1,483,656       1,444,304
  Income tax expense                       578,842,019     727,581,754
  Net increase in the allowance for
   bad debtors                              12,706,287      10,536,261
  Gain (loss) on property, plant and
   equipment                                12,286,188       1,450,260
  Net increase (decrease) in the
   accrual for lawsuits                      2,091,351    ( 2,930,955)
  Increase in the provision for future
   compensation of personnel                 3,529,800               -
  Net increase in the provision for
   environmental remediation                 3,066,661       7,462,644
  Net increase (decrease) in the
   allowance for obsolescence of
   materials                                   175,391        ( 3,877)
  Other non-cash items (1)                 155,200,083      99,003,960

  Changes in assets, liabilities and
   account with Head Office:

  Decrease (increase) in accounts
   receivable                              150,327,213  ( 229,573,626)
  (Increase) decrease in inventories      ( 5,675,583)       1,952,342
  Decrease (increase) in other current
   receivables                              12,740,016   ( 40,690,717)
  Decrease in other non current
   receivables                                 607,797      43,902,486
  Increase in accounts payable,
   payroll and social security
   contributions,
taxes payable less provisions and
 other liabilities                          79,874,253     159,453,055
  Compensation paid to personnel due
   to defined benefit plans               ( 1,677,658)    ( 1,445,421)
  Payments related to lawsuits               ( 59,844)      ( 275,565)
  Income tax paid                       ( 830,211,981)  ( 634,898,424)
                                       --------------- ---------------
  Net cash generated by operations       1,736,003,541   1,891,529,255
                                       =============== ===============

Cash used in investing activities:

  Increase in non current investments     ( 1,179,269)    ( 1,680,541)
  Acquisitions of property, plant and
   equipment                           (1,619,452,383) (1,220,589,858)
  Additions to intangible assets             ( 67,390)      ( 466,891)
  Collection due to the sale of
   property, plant and equipment            12,495,387         883,332
                                       --------------- ---------------
  Cash used in investing activities    (1,608,203,655) (1,221,853,958)
                                       --------------- ---------------

Cash generated by (used in) financing
 activities:

  Increase in loans (net)                   96,310,892   1,016,577,445
  Remittances made to Head Office
   (net)                                 ( 34,254,830) (1,578,473,978)
                                       --------------- ---------------
  Cash generated by (used in)
   financing activities                     62,056,062  ( 561,896,533)
                                       --------------- ---------------

Net increase in funds                      189,855,948     107,778,764

Cash at the beginning of period (2)        249,407,237     383,294,098
                                       --------------- ---------------

Cash at the end of period (2)              439,263,185     491,072,862
                                       =============== ===============

(1) It is made up of
        Exchange (gains) losses
        and other financial results
        relating to loans and other          206,022,760   144,465,467
        Deferred income tax benefit        ( 50,822,677) ( 45,461,507)
        Total                                155,200,083    99,003,960

(2) Cash and banks plus investments the maturity date of which is
lower than three months.

The accompanying notes and exhibits are an integral part of these
financial statements.

NOTES TO FINANCIAL STATEMENTS as of September 30, 2007 and comparative
information (in pesos)

NOTE 1 - THE BRANCH

Pan American Energy LLC (Argentine Branch) is engaged in the exploration,
development and production of hydrocarbons.

On October 30, 1997, a definitive agreement for the transfer of assets and
liabilities was entered into between Amoco Argentina Oil Company (Argentine
Branch) and Pan American Energy LLC (Argentine Branch) hereinafter "the Branch",
whereby Amoco Argentina Oil Company (Argentine Branch) transferred its business
consisting of assets and liabilities to the Branch, effective on October 8,
1997.

On May 1, 1998 a definitive agreement for the transfer of assets and liabilities
was entered into between Pan American Continental S.R.L. and the Branch, whereby
Pan American Continental S.R.L. transferred to the Branch its business
consisting of assets and liabilities except for the name Pan American
Continental.

NOTE 2 - OPERATIONS OF THE BRANCH

The following table summarizes the main operations, blocks and joint ventures in
which the Branch is involved for the nine-month period ended September 30, 2007.


                         Main blocks/     Ownership       Branch's
       Activity           operations       interest    participation

Oil and gas production  Cerro Drag�n                   Operator
 and development                        100,00%
                        Piedra Clavada  100,00%        Operator
                        Koluel Kaike    100,00%        Operator
                        Lindero                        Operator
                         Atravesado     62,50%
                        Anticlinal                     Operator
                         Funes          80,00%
                        Acambuco 52,00%                Operator
                        Aguada Pichana  18,18%         Non operator
                        San Roque                      Non operator
                         16,47%
                        Estancia La                    Non operator
                         Escondida (1)  25,00%

Oil and gas exploration Acambuco "B"                   Operador
 and development                        100,00%
                        Bandurria       18,18%         Non operator
                        Costa Afuera                   Non operator
                         Argentina
                         "CAA-40"       50,00%
                        Costa Afuera                   Non operator
                         Argentina
                         "CAA-46"       50,00%

Explanations:

  (1)  The Joint Venture agreement (UTE) governing the relationships
        between the holders of concession states that their
        participating interests in rights, obligations and interests
        inherent in the property including production, will be
        distributed based on the depth from which production is
        obtained: in the deep area, the Branch has a 75% interest and
        the co-holder has the remaining 25%; in the shallow area from
        which current total production is obtained, the Branch has a
        25% interest and the co-holder the remaining 75%; and in the
        area "Descubrimiento El Zanj�n", both parties hold a 50%
        interest. The average interest described grants the Branch a
        50% interest in the rights over the property, regardless the
        percentage thereof in the concession.

NOTE 3 - ACCOUNTING PRINCIPLES

3.1 Reporting currency

In accordance with Decree 664/2003 and General Resolution No. 441/2003 of the
National Securities Commission (the "Comisi�n Nacional de Valores" or CNV), the
Branch discontinued the application of currency restatement as from March 1,
2003.

From January 1, 2002 to February 28, 2003, the Branch applied the restatement
methodology set forth by Technical Resolution No. 6, amended by Technical
Resolutions Nos. 17 and 19 of the Argentine Federation of Professional Councils
of Economic Sciences (FACPCE) and by the Professional Council of Economic
Sciences of the City of Buenos Aires (CPCECABA), using indexes derived from the
Internal Wholesale Price Index.

3.2 Valuation and presentation principles

a) Presentation

The financial statements are presented in accordance with the presentation
principles established by the accounting standards generally accepted in the
City of Buenos Aires and pursuant to the provisions of the CNV.

Investments to become due or to be realized in the short term (3 months) are
considered a cash equivalent in the statement of cash flows.

For comparative purposes, necessary reclassifications were made on prior-year
financial statements in order to present the figures on a consistent basis.

b) Participating interest in joint ventures

The Branch is engaged in exploration and production activities in certain areas
through its participation in joint ventures with other companies. The account
balances reflecting the joint ventures' assets, liabilities, income and expenses
are proportionately consolidated in these financial statements.

c) Foreign currency

Assets and liabilities denominated in foreign currency as listed in Exhibit F
have been stated in Argentine Pesos at the exchange rate prevailing at the end
of each period. The resulting exchange gains or losses are presented in the
financial results line (provided by either assets or liabilities, as applicable)
of the Statement of Income.

d) Inventories

Crude oil is stated at reproduction cost.

Spare parts, materials and raw materials are stated at the latest acquisition
cost.

Goods in transit are stated at acquisition cost plus import expenses.

Advances to suppliers are valued at the amounts actually incurred.

The carrying value of inventories, taken as a whole and after considering the
allowance for obsolescence (see Note 3.2.g), does not exceed their recoverable
value.

e) Property, plant and equipment

Property, plant and equipment is stated at acquisition cost as indicated in Note
3.1 less the related accumulated depreciation. The acquisition cost includes all
the necessary costs incurred in order to put the assets in working condition.

Depreciation is calculated by applying the straight-line method over the
estimated useful lives of the assets and/or the duration of the contracts, as
applicable, except for production wells, equipment and services, which are
depreciated per the units of production method.

The pre-operating costs of the properties in the exploration stage, except for
geology and geophysics related expenses that are charged to the Statement of
Income as incurred, remain capitalized for a given period based on the
characteristics of each property, without exceeding five years considered as
from the completion of the exploration stage or, if applicable, as from
production interruption, unless:

1. it is expected that explored areas will proceed to the commercial production
stage, in which case the referred costs remain capitalized, or

2. during the referred five year period, management estimates that commercial
production will not be feasible, in which case, the referred costs are expensed.

For property, plant and equipment existing as of January 6, 2002, the
acquisition or construction of which resulted in outstanding liabilities
denominated in foreign currency as of July 28, 2003, date on which Resolution CD
87/2003 of the CPCECABA was published, exchange gains/losses resulting from
restating such liabilities totaling $1,832,303,600 were capitalized pursuant to
specific accounting principles, based on the determination of the direct or
indirect ratio between the assets subject to capitalization and the outstanding
liabilities in foreign currency. The assets or group of assets eligible for the
capitalization of exchange gains/losses have remained unchanged. Such
capitalization of exchange gains/losses was performed in proportion to the
balance of the original value of the referred assets not subject to
depreciation. Additionally, exchange gains and losses were capitalized up to the
limit arising from the comparison between the replacement or reproduction cost
of the assets and their recoverable value.

For the purposes of presenting the financial statements in restated currency
(see Note 3.1), the capitalized exchange gains/losses amounting to $
1,832,303,600 are considered an anticipated currency restatement until such
differences are absorbed thereby. The excess of capitalized exchanges losses
over the restated amounts totals $ 85,358,131 as of September 30, 2007.

The Branch considers that the net carrying value of property, plant and
equipment, taken by group of assets of similar characteristics, does not exceed
their estimated value in use based on the information available as of the date
of issuance of these financial statements.

f) Intangible assets

These are pre-production geological expenditures and acquisition cost of blocks
valued at restated cost as indicated in Note 3.1, less the related accumulated
amortization. Amortization is calculated per the units of production method.

g) Allowances, provisions and accruals

Allowances deducted from assets:

- For bad debtors: they are determined following the detailed analysis of the
credit status of each customer.

- For obsolescence of materials: the Branch creates an allowance for those
assets evidencing significant slow movement based on a specific analysis.

Accruals included in liabilities:

- For lawsuits: they are determined considering the potential costs of those
lawsuits filed against the Branch based on the opinion of legal counsel.

Provisions included in liabilities:

- For future compensation of personnel: they are estimated as a percentage of
compensation paid, calculated in terms of actuarial methods, and can be applied
to compensate employees of the Branch who have complied with certain seniority
requirements defined by the Branch. Payments are debited from the related
provision.

- For environmental remediation: calculated on the basis of well-abandonment
forecasts until the expiration of agreements, at present values.

h) Income tax

The Branch applies the deferred tax method to account for income tax. Based on
the referred method, the current income tax is calculated by applying the rates
prevailing as of September 30, 2007 and 2006 on taxable income; and the future
tax effect of the tax loss carryforwards, if any, and the temporary differences
in the book and tax values of assets and liabilities is recognized as deferred
tax assets or liabilities.

The deferred tax assets are recognized only to the extent of their
recoverability.

i) Use of estimates

The preparation of the financial statements in accordance with generally
accepted accounting principles requires that the Management of the Branch makes
estimates about the value of certain assets and liabilities, including
contingent liabilities, as well as the amounts informed of certain income and
expenses generated during the period.

The final present value of the transactions and items affected by these
estimates may differ from the estimated amounts.

j) Defined benefit plan

The Branch implemented a pension plan for the benefit of its personnel called
"Plan Puente" or "Bridge Plan". The amount accrued upon the implementation of
such plan amounts to $114,216,919, ($ 97,036,602 as of December 31, 2006)
presented under Other non current liabilities, out of which the amount of
$ 17,345.816 accrued in the nine-month period ended September 30, 2007 and was
included in Other income and expenses of the Statement of Income. Such amount is
made up of $ 186,953,230 of nominal value less $ 72,736,311 (financial effect
from the discount to present value).

k) Revenue recognition

Revenue derived from the sale of assets is recognized when the significant risks
and rewards of ownership have been transferred to the purchaser.

The Branch uses the production method to recognize revenues from the sale of
oil. In those cases where the Branch has a shared interest with other producers,
revenues are recorded upon the basis of the interest held in each joint venture.

In order to recognize revenues from the sale of gas, the Branch uses the sales
method, whereby these revenues are recorded on the basis of the actual volumes
delivered to purchasers irrespective of whether they result from the Branch's
own output or from the output shared with other producers.

l) Lease agreements

The Branch leases the space occupied by its offices, which agreements are of an
operating nature and, therefore, the expenses incurred are recognized in the
statement of income as they accrue.

The amount of the leases, broken down by maturity dates, is reported below:

                                                Nominal value
                                       ------------------------------
Up to a year                            U$S 2,667,232 and $ 1,190,597
Over one year and up to five years      U$S 3,257,982 and $ 2,077,198

During the nine-month period, the Branch recognized an expense of $ 7,080,020
related to such lease agreements, presented in the line Buildings Rentals and
Maintenance in Exhibit G.

m) Enactment of new technical resolutions and other regulations

In line with General Resolution No. 487/2006 of the CNV, the Branch has
considered the currency restatement of property, plant and equipment as a
temporary difference for the purpose of the deferred tax calculation.
Consequently, at the beginning of the fiscal year 2006, an increase in the net
deferred tax liabilities amounting to $229,088,577 was recognized, as well as an
adjustment to prior year results (loss) presented as part of the Account with
Head Office (Note 7).

As required by Resolution No. 487/2006 of the CNV in connection with the
recoverable values of assets, we report that at the balance sheet date no
indicators exist that the carrying value of the assets exceeds their recoverable
value.

NOTE 4 - BREAKDOWN OF CERTAIN BALANCE SHEET ITEMS
                                            09/30/2007    12/31/2006
                                           ------------- -------------
ASSETS
CURRENT ASSETS
a) Cash on hand and in banks
  Cash on hand in local currency                 139,986       141,977
  Cash on hand in foreign currency
   (Exhibit F)                                   129,251       232,722
  Cash in banks in local currency             28,762,501    24,481,235
  Cash in banks in foreign currency
   (Exhibit F)                                   107,756     9,494,638
                                           ------------- -------------

  Total                                       29,139,494    34,350,572
                                           ============= =============
b) Accounts receivable
  Accounts receivable in local currency       96,813,906    73,659,586
  Allowance for bad debtors in local
   currency (Exhibit D)                     ( 4,919,487)  ( 4,983,016)
  Accounts receivable in foreign currency
   (Exhibit F)                               509,391,065   682,872,598
  Allowance for bad debtors in foreign
   currency (Exhibits D
and F)                                     ( 26,799,675) ( 14,029,859)
                                           ------------- -------------

  Total                                      574,485,809   737,519,309
                                           ============= =============

                                               09/30/2007  12/31/2006
                                               ----------- -----------
c) Other receivables
  Loans to personnel                             9,479,201   8,490,283
  Tax credits                                   20,647,543  24,907,001
  Expenses recoverable in local currency         4,983,230   7,310,337
  Expenses recoverable in foreign currency
   (Exhibit F)                                   1,816,349   1,284,463
  Prepaid expenses in local currency             3,289,872   7,648,706
  Tax credit certificate - Decree 564/05
    in foreign currency (Exhibit F)             20,170,793           -
  Miscellaneous in local currency               34,689,602  39,819,127
  Miscellaneous in foreign currency (Exhibit
   F)                                            8,257,936  28,032,599
  Affiliated companies in foreign currency
   (Note 9and Exhibit F)
                                                 1,817,256     399,282
                                               ----------- -----------

  Total                                        105,151,782 117,891,798
                                               =========== ===========

d) Inventories
  Crude oil in stock                           49,633,369   69,704,063
  Spare parts, materials and raw materials     56,949,815   47,997,293
                                             ------------ ------------

  Subtotal (Exhibit E)                        106,583,184  117,701,356

  Allowance for obsolescence of materials
   (Exhibit D)                               ( 3,039,521) ( 2,864,130)
                                             ------------ ------------

  Subtotal                                    103,543,663  114,837,226

  Goods in transit                             27,325,248    7,924,880
  Advances to suppliers in local currency       5,132,345    7,765,719
  Advances to suppliers in foreign currency
   (Exhibit F)                                    308,547      281,786
                                             ------------ ------------

  Total                                       136,309,803  130,809,611
                                             ============ ============

NON CURRENT ASSETS
e) Other receivables
  Loans to personnel                              5,858,202  3,837,996
  Advances to suppliers in local currency         1,745,212  4,534,641
  Miscellaneous in local currency                 6,127,550  6,517,545
  Miscellaneous in foreign currency (Exhibit F)  14,576,684 14,025,263
                                                 ---------- ----------

  Total                                          28,307,648 28,915,445
                                                 ========== ==========


                                               09/30/2007  12/31/2006
                                               ----------- -----------
LIABILITIES
CURRENT LIABILITIES
f) Accounts payable
  Trade payables in local currency             407,835,080 449,624,468
  Trade payables in foreign currency (Exhibit
   F)                                          134,027,227 167,263,681
  Expenses payable in local currency            37,695,468  34,598,789
  Expenses payable in foreign currency
   (Exhibit F)                                  94,500,000           -
  Affiliated companies in foreign currency
   (Note 9 and Exhibit F)
                                                 9,105,223   9,977,411
                                               ----------- -----------

  Total                                        683,162,998 661,464,349
                                               =========== ===========

g) Loans
  Bonds in foreign currency (Exhibit F)                  - 306,200,000
  Unsecured notes payable in local currency    103,799,516 275,057,276
  Secured notes payable in foreign currency
(Exhibit F)                                              -   4,172,593
  Unsecured notes payable in foreign currency
(Exhibit F)                                    312,736,454 226,105,569
  Interest accrued on bonds and notes payable
   in foreign currency (Exhibit F)
                                                42,956,014  65,486,912
                                               ----------- -----------

  Total                                        459,491,984 877,022,350
                                               =========== ===========

h) Taxes payable
  Income tax net of prepayments                144,382,035 391,273,549
  Miscellaneous                                 85,448,064  73,884,392
                                               ----------- -----------

  Total                                        229,830,099 465,157,941
                                               =========== ===========

NON CURRENT LIABILITIES
i) Accounts payable
  Miscellaneous liabilities in local currency    41,311,497 15,707,663
  Miscellaneous liabilities in foreign currency
   (Exhibit F)                                   17,356,965 16,872,072
                                                 ---------- ----------

  Total                                          58,668,462 32,579,735
                                                 ========== ==========

                                            09/30/2007    12/31/2006
                                           ------------- -------------
j) Loans
  Affiliated companies in local currency
   (Note 9)                                            -   446,709,189
  Bonds in foreign currency (Exhibit F)    1,102,500,000 1,071,700,000
  Unsecured notes payable in foreign
   currency
(Exhibit F)                                1,883,007,000   747,233,793
                                           ------------- -------------

  Total                                    2,985,507,000 2,265,642,982
                                           ============= =============

NOTE 5 - ISSUANCE OF BONDS

On February 11, 1997, Amoco Argentina Oil Company (Argentine Branch) issued the
Second Series of Bonds in the amount of US$ 100,000,000 due in ten years, at a
6.75% rate per annum. The bonds were paid upon maturity on February 1, 2007.
This issuance completes the maximum amount of the short and medium term bond
program of US$ 200,000,000 approved by the National Securities Commission
through Resolution No. 10982 dated July 13, 1995.

As a result of the transfer of assets and liabilities referred to in the second
paragraph of Note 1 to these financial statements, Amoco Argentina Oil Company
(Argentine Branch) transferred the above mentioned bonds to Pan American Energy
LLC (Argentine Branch). Such Bonds were guaranteed until repayment, in February
2007, by BP Company North America Inc.

On February 21, 2002, through Resolution No. 14123, the CNV authorized the
Global Program for the Issuance of Bonds of Pan American Energy LLC (Argentine
Branch) (the "Global Program") in the total amount of US$ 1,000,000,000.

On October 27, 2004, the Branch issued Bonds Class 3 in the amount of US$
100,000,000 under the Global Program. The bonds become due in five years
(October 27, 2009) with a 7.125% annual fixed interest rate to be paid on a
half-yearly basis. The price of the issuance was 99.483%, nominal value. The
funds derived from this issuance were allocated to investments in property and
equipment and the repayment of loans.

On August 9, 2006, the Branch issued Bonds Class 4 in the amount of US$
250,000,000 under the Global Program, to be repaid in two equal installments
becoming due on February 9, 2011 and February 9, 2012, with interest accruing at
an annual fixed interest rate of 7.75% to be paid on a half-yearly basis. The
price of the issuance was 100.00% of the nominal value. The funds obtained in
this issue were allocated to investments in property and equipment, working
capital and repayment of loans.

NOTE 6 - OTHER FINANCIAL LIABILITIES

Pan American Energy LLC (Argentine Branch) obtained the following loans at a
five-year term, with interest compounded bi-annually amortized in monthly
installments: 1) On July 20, 2001, in the amount of US$ 72,051,406, with
interest accruing at an annual rate of 7.54%, with the first installment falling
due on April 19, 2002 and the repayment term being completed on June 20, 2006,
and 2) on September 17, 2001, in the amount of US$ 40,001,944, with interest
accruing at an annual rate of 6.72%, with the first installment falling due on
June 20, 2002 and completing repayment on August 21, 2006. For the purpose of
fixing the interest rate, the Branch has entered into integrated derivative
transactions, the impact of which has been included in the cost of the
transactions. Both loans have been guaranteed by Pan American Energy LLC until
the repayment thereof in June and August 2006.

On July 11, 2005, the Branch obtained from the International Finance Corporation
(IFC) a loan in the amount of US$ 250,000,000 guaranteed by Head Office and
consisting of three tranches:

-"A" in the amount of US$ 100,000,000, with interest accruing at an annual fixed
rate of 7.56%, through an interest rate swap with IFC, amortizable on six-month
installments basis and becoming due in July 2015;

- "B" in the amount of US$ 135,000,000, at an annual fixed rate of 6.97%,
through an interest rate swap with IFC, amortizable on a six-month installments
basis, and becoming due in July 2012; and

- "C" in the amount of US$ 15,000,000, at an annual fixed base rate of 5.66%
plus additional interest calculated in relation to Head Office's economic
performance, becoming due in July 2016.

As of December 31, 2005, the amount of the loans had been fully disbursed.

The first principal installment for tranches "A" and "B" was paid on January 15,
2007.

The funds obtained were used to partially fund the 2005 investment program in
the San Jorge Gulf.

On July 13, 2007, the Branch obtained from the International Finance Corporation
(IFC) a loan in the amount of U$S 550,000,000, consisting of two tranches:

- "A" in the amount of US$ 150,000,000, amortizable on a six-month installment
basis and becoming due in April 2018; and

- "B-1" in the amount of US$ 158,500,000, amortizable on a six-month
installments basis and becoming due in April 2014, and "B-2" in the amount of
US$ 241,500,000, amortizable on a six-month installment basis and becoming due
in April 2015.

The loan is guaranteed by Pan American Energy LLC and the funds obtained will be
applied to partially fund the investment program that the Company will undertake
in the Cerro Drag�n, area in the San Jorge Gulf basin, located in the provinces
of Santa Cruz and Chubut.

To the date of these financial statements, a disbursement of US$ 400,000,000 was
made in relation to the referred loan, and the outstanding US$ 150,000,000 are
planned to be disbursed during the first quarter of the following year.

The Branch believes that its access to credit lines is appropriate in order to
meet its commercial and financial obligations even though it presents a negative
working capital as of September 30, 2007.

NOTE 7 - ACCOUNT WITH HEAD OFFICE

The changes in the account with Head Office during the nine-month periods ended
September 30, 2007 and 2006 have been as follows:

                                            Nine-month period ended
                                         -----------------------------
                                            09/30/2007      09/30/2006
                                         ------------- ---------------

Balance at beginning of year with Head
 Office                                  1,656,519,921   2,290,686,326
Adjustment to prior-year results (Note
 3.2.m)                                              -  ( 229,088,577)
                                         ------------- ---------------
Balance at beginning of the year with
 Head Office after adjustment            1,656,519,921   2,061,597,749

Remittances made to Head Office - net    ( 34,254,830) (1,578,473,978)
Transfer of net income                     955,954,327   1,266,647,813
                                         ------------- ---------------
Net changes for the period                 990,209,157  ( 311,826,165)
                                         ------------- ---------------

Balance at period-end with Head Office
 (1)                                     2,612,474,248   1,749,771,584
                                         ============= ===============
(1) As of September 30, 2007 and as of September 30, 2006 the balances
 are in local currency.

NOTE 8 - CAPITAL ALLOCATED TO THE BRANCH

Pursuant to the Consent Action taken by the members on December 27, 2001, Pan
American Energy LLC allocated capital to the Branch in the amount of $
200,000,000. Such capital is registered with the Public Registry of Commerce. In
accordance with Consent Action dated February 1, 2005, Pan American Energy LLC
allocated capital to the Branch in the amount of $ 21,779,007. Such capital
contribution represents the contribution of assets and liabilities of the areas
Anticlinal Funes and R�o Barrancas made by Head Office within the scope of the
corporate reorganization registered in the State of Delaware, USA and in the
Public Registry of Commerce of the City of Buenos Aires on December 12, 2005
under number 2106, Book 58, Volume B of Foreign Companies.

NOTE 9 - TRANSACTIONS AND BALANCES WITH AFFILIATED COMPANIES

The transactions and balances with Pan American Energy LLC, the Branch's Head
Office, are disclosed in note 7.

The transactions and balances with affiliated companies are detailed below:

                                                2007          2006
                                             (9 months)    (9 months)
TRANSACTIONS

   Pan American Fueguina SA
       Recovery of receivables                          -        3,014
       Financing                            (446,709,189)  384,000,000

   Pan American Sur S.A.
       Pays                                  ( 1,252,476)            -

   PAE E & P Bolivia Ltd,
       Purchases and hiring of services           581,480            -

   PAE Oil & Gas Bolivia Ltd.
       Purchases and hiring of services           836,494        3,489

   BP West Coast Products LLC
       Sales                                  322,280,943  984,587,543

   BP America Production Company
       Services                                 1,922,241    4,682,925

                                               09/30/2007   12/31/2006
BALANCES

   Pan American Fueguina S.A.
       Accounts payable                                 -      899,281
       Loans                                            -  446,709,189

   Pan American Sur S.A.
        Accounts payable                        6,928,755    8,181,231

   PAE E & P Bolivia Ltd.
       Other receivables                          875,163      293,683

   PAE Oil & Gas Bolivia Ltd.
       Other receivables                          942,093      105,599

   BP West Coast Products LLC
       Accounts receivable                              -            -

   BP America Production Company
       Accounts payable                         2,176,468      896.899

NOTE 10 - GUARANTEES AND OTHER COMMITMENTS

In terms of investment commitments, the Branch has not granted any guarantees as
of September 30, 2007.

The terms agreed in certain loan agreements include commitments assumed by the
Branch referring to the maintenance of certain indebtedness and debt service
ratios and certain restrictions on the distribution of dividends. As of
September 30, 2007, the Branch complied with all the commitments assumed in loan
agreements.

The Branch signed the agreement entered into between producers and refineries on
January 2, 2003 for the stability of the prices of crude oil, gasoline and gas
oil (Resolution No. 85/2003 of the Energy Department), in force until April 30,
2004. The Branch has complied with the quotas set forth in the crude oil
agreement. Such deliveries were stated at spot price upon carrying out the
transaction, giving rise to a receivable of $ 10,458,352 as of September 30,
2007 in favor of the Branch, contingent on the decrease in the crude oil WTI
price to an amount lower than US$28.50 per barrel. The price thereof was US$
81.56 as of September 30, 2007.

On February 27, 2006 the Branch executed an agreement with Shell C.A.P.S.A.
whereby Shell agreed to pay the Branch a total negotiated price of $86,499,326
in connection with deliveries of crude oil made in 2003 and 2004 under the price
stabilization agreement referred to in the preceding paragraph, and $ 14,032,834
as interest. The Branch agreed to waive further claims in connection with said
deliveries. The related revenue was recognized in the period ended September 30,
2006. In addition, in September 2007, the Branch reached an agreement with ESSO
Petrolera Argentina S.R.L., whereby ESSO agreed to pay a total price of
$ 7,966,366 in connection with deliveries of crude oil made in 2003 and 2004 and
$ 2,445,974 as interest. The Branch agreed to waive further claims in connection
with such deliveries. The related revenue was recognized in the nine-month
period ended September 30, 2007.

NOTE 11 - INCOME TAX

The breakdown of the main deferred tax assets and liabilities is as follows:

                                               09/30/2007  12/31/2006
                                               ----------- -----------

Deferred tax assets
   Allowance for obsolescence of materials       1,063,833   1,002,446
   Provision for future compensation to
    personnel                                    4,657,945   4,296,053
   Allowance for lawsuits                        7,793,389   7,082,362
   Provision for environmental remediation      12,698,077   9,835,326
   Other provisions and allowances              26,064,507  18,174,616
                                               ----------- -----------

Total deferred tax assets                       52,277,751  40,390,803
                                               ----------- -----------

Deferred tax liabilities
   Inventories - materials and spare parts         956,830     962,248
   Property, plant and equipment and
    intangible assets                          419,413,553 458,338,264
   Other                                        23,035,825  23,041,425
                                               ----------- -----------

Total deferred tax liabilities                 443,406,208 482,341,937
                                               ----------- -----------

Total deferred tax liabilities - net           391,128,457 441,951,134
                                               =========== ===========

The reconciliation between the income tax expense for the period and the
theoretical expense resulting from applying the prevailing tax rate to income
before tax is as follows:

                                              2007           2006
                                         -------------- --------------
                                           (9 months)      (9 months)

Net income before taxes                   1,518,228,499  1,948,768,060

Prevailing tax rate                                 35%            35%
                                         -------------- --------------
Net income at prevailing tax rate        ( 531,379,975) ( 682,068,821)

Permanent differences at the tax rate:
   Miscellaneous - net                        3,360,633      ( 51,426)
                                         -------------- --------------

Subtotal permanent differences at the
 tax rate                                     3,360,633      ( 51,426)
                                         -------------- --------------

Income tax expense - total               ( 528,019,342) ( 682,120,247)
                                         ============== ==============

Current income tax expense               ( 578,842,019) ( 727,581,754)
Deferred income tax benefit                  50,822,677     45,461,507
                                         -------------- --------------
                                         ( 528,019,342) ( 682,120,247)
                                         ============== ==============

NOTE 12 - RESTRICTED ASSETS

In November 2006, the Branch collected the deposit made in 2003 as collateral
for a loan from a foreign bank. It amounted to US$ 2,505,351.

In August 2007, the Branch also collected the deposit made in 2005 as collateral
for a loan received from a foreign bank amounted to US$ 1,764,705.

In August 2007, the liens on two generators pledged as collateral for a loan in
the amount of $ US$ 7,483,776 was cancelled, after the loan was paid off in June
2007.

Then, there are no restricted assets as of September 30, 2007.

NOTE 13 - INFORMATION ON LITIGATION AND OTHER SUPPLEMENTARY MATTERS

Lawsuits were filed against the Branch, particularly in courts in labor and
commercial matters. Based on the information available, Management and the legal
counsel of the Branch consider that the contingent liability that might arise
from such lawsuits would not have a material adverse effect on the financial
position of the Branch or the results of its operations.

NOTE 14 - AGREEMENTS WITH THE PROVINCES OF CHUBUT AND SANTA CRUZ

The Branch entered with the Argentine province of Chubut (04/27/2007) and Santa
Cruz (06/25/2007) into the investment commitment agreement which provides for
the extension of the term of the exploration and production for a ten-year
period in the blocks known as Cerro Drag�n, the area of which is extended in the
territory of both provinces, and Piedra Clavada and Koluel Kaike in the province
of Santa Cruz. The agreements expired between 2016 and 2017.

These agreements provided for minimum investments of US$ 2,000,000,000 in the
Province of Chubut and of US$ 500,000,000 in the Province of Santa Cruz. These
investments are to be made before 2017 and are destined to onshore activities.
Other investments of US$ 1,000,000,000 in the Province of Chubut and of US$
300,000,000 in the Province of Santa Cruz are to be made before 2027.

In addition, both agreements provided for a US$ 80,000,000 investment commitment
for sea exploration, at the Branch's own risk, by means of two joint ventures
(UTEs) with the state-run companies Petrominera (in the case of Chubut) and
Fomicruz (in the case of Santa Cruz). If the Branch makes commercial
discoveries, an additional investment commitment will be required in the amount
of US$ 500,000,000 for the development of the offshore fields to be discovered.

The creation of the UTEs referred to in the preceding paragraph is consistent
with the provisions of sections 11 and 95 of the Hydrocarbon Law, whereby
state-run companies are expressly empowered to execute agreements and create
companies or other forms of association with individuals or entities for the
development of their activities.

The operation agreements executed with state-run companies also fall within the
scope of the referred Law, which shall be effected as from the year 2027,
subject to compliance with the investments and Pan American Energy's exploration
success, so that it is allowed to evidence that it has developed sufficient
reserves to continue with the production of the fields of those areas as from
that year.

Other commitments assumed by the Branch are as follows:

    --  make a special contribution of 3% of the net revenues generated by the
        concessions to the provinces of Chubut and Santa Cruz ; and

    --  make a contribution of US$ 120,000,000 and US$ 40,000,000 for the
        creation of different funds in the provinces of Chubut and Santa Cruz,
        respectively, destined to domestic development and payable in four
        annual, equal and consecutive installments. These amounts will be added
        to the important commitment assumed by the Branch in the field of
        Corporate Social Responsibility and are considered expenses for the
        fiscal year in which payments are effectively made.

The agreement with the province of Chubut was ratified by provincial law No.
5616 passed by the Provincial Legislature on May 24, 2007, enacted by decree No.
500/2007 and published in the Official Bulletin on May 28, 2007.

The Government of the Province of Santa Cruz has sent the agreement to the
Provincial Legislature for its approval, which is pending.

The execution of these agreements involves a new horizon to sustain the increase
in production and reserves in the oil fields Cerro Drag�n, Piedra Clavada and
Koluel Kaike, as well as to the new off shore operations in the Gulf. This new
horizon shall allow addressing long-term projects requiring sound investments,
new technologies and teams working for the future.

NOTE 15 - SUBSEQUENT EVENTS

No events or transactions have occurred from the balance sheet to the date of
issuance of these financial statements that would have a material effect on the
financial position of the Branch as of September 30, 2007 or the results of its
operations for the nine month period then ended.

PAN AMERICAN ENERGY LLC (ARGENTINE BRANCH)                   EXHIBIT A
PROPERTY, PLANT AND EQUIPMENT (in pesos)
as of September 30, 2007 and as of December 31, 2006

                                       Original values
             --------------------------------------------------------------------
                   At         Increases
               beginning         for                                     At
Main account  of the year    the period     Transfers     Decreases  period-end
------------ -------------- ------------- ------------- -------------------------


Land and
 buildings       53,902,203        45,000     3,383,271          -     57,330,474
Plants,
 wells and
 exploration
 and
production
 facilities  12,045,371,439   107,654,817   500,370,346 68,531,338 12,584,865,264
Furniture
 and office
 supplies         8,090,645             -         7,677          -      8,098,322
Equipment       130,526,906             -     8,660,344          -    139,187,250
Vehicles         37,318,081       276,583             -    287,802     37,306,862
Work in
 progress       610,477,077 1,512,722,906 (512,421,638)          -  1,610,778,345
Advances to
 suppliers       24,040,065     3,060,817             -          -     27,100,882
             -------------- ------------- ------------- ---------- --------------

Total as of
 09/30/2007  12,909,726,416 1,623,760,123             - 68,819,140 14,464,667,399
             ============== ============= ============= ========== ==============

Total as of
 12/31/2006  11,215,074,160 1,714,133,505             - 19,481,249 12,909,726,416
             ============== ============= ============= ========== ==============

                                                Depreciation
                          --------------------------------------------------------
                                                                                           Book value
                           Accumulated                                             ---------------------------
                           at beginning                             Accumulated      Net as of     Net as of
Main account               of the year    Increases    Decreases   at period-end     09/30/07      12/31/06
------------------------  -------------- ------------ ----------- ---------------- ------------- -------------
                                              (1) (2)

Land and buildings            25,181,488    2,153,946           -       27,335,434    29,995,040    28,720,715
Plants, wells and
 exploration and
production facilities      6,880,673,207  550,442,686  22,734,197    7,408,381,696 5,176,483,568 5,164,698,232
Furniture and office
 supplies                      7,895,688       61,439           -        7,957,127       141,195       194,957
Equipment                    102,450,577   13,978,528           -      116,429,105    22,758,145    28,076,329
Vehicles                      23,037,300    3,852,136     287,801       26,601,635    10,705,227    14,280,781
Work in progress                       -            -           -                - 1,610,778,345   610,477,077
Advances to suppliers                  -            -           -                -    27,100,882    24,040,065
                          -------------- ------------ ----------- ---------------- ------------- -------------

Total as of 09/30/2007     7,039,238,260  570,488,835  23,021,998    7,586,704,997 6,877,962,402
                          ============== ============ =========== ================ =============

Total as of 12/31/2006     6,417,279,987  638,177,818  16,219,545    7,039,238,260               5,870,488,156
                          ============== ============ =========== ================               =============

(1) See Exhibit G.
(2) See depreciation policies in Note 3.2.e.

PAN AMERICAN ENERGY LLC (ARGENTINE BRANCH)                                                            EXBHIBIT B
INTANGIBLE ASSETS (in pesos)
as of September 30, 2007 and as of December 31, 2006

                                           Original Values                    Amortization
                                  --------------------------------- ---------------------------------
                                                                                                          Book value
                                              Increases             Accumulated                       ------------------
                                      At         for                    at                Accumulated Net as
                                   beginning    the         At       beginning  For the        at        of    Net as of
  Main account                    of the year   period  period-end  of the year   period  period-end  09/30/07 12/31/06
--------------------------------- ----------- --------- ----------- ----------- --------- ----------- -------- ---------

                                                                                  (1) (2)
Pre-operating expenses and dry
wells                              48,740,915         -  48,740,915  48,300,969    43,080  48,344,049  396,866   439,946
Acquisition cost of blocks          6,487,247         -   6,487,247   6,276,829   104,783   6,381,612  105,635   210,418
Deferred charges                   63,488,027    67,390  63,555,417  62,219,624 1,335,793  63,555,417        - 1,268,403
                                  ----------- --------- ----------- ----------- --------- ----------- -------- ---------

Total as of 09/30/2007            118,716,189    67,390 118,783,579 116,797,422 1,483,656 118,281,078  502,501
                                  =========== ========= =========== =========== ========= =========== ========

Total as of 12/31/2006            118,299,083   417,106 118,716,189 114,582,363 2,215,059 116,797,422          1,918,767
                                  =========== ========= =========== =========== ========= ===========          =========

(1) See Exhibit G.
(2) See amortization criteria in Note 3.2.f.

PAN AMERICAN ENERGY LLC (ARGENTINE BRANCH)

OTHER INVESTMENTS (in pesos)
as of September 30, 2007 and as of December 31, 2006

                                    Book           Book
                                   value          value
        Main account             09/30/2007     12/31/2006
-----------------------------

Short-term investments

Mutual funds in foreign
 currency (Exhibit F)                    1,138  215,056,665

   Class: Citi Institutional
    Liquid Reserves
   Quantity: 366 units
   Quoted value: US$ 1
   (US dollar)

Government securities
   Certificates evidencing
    payment of tax liability
   (Government of the
    Province of Chubut)
   Coupons Nos, 18 and 19            1,309,861            -

Time deposits in foreign
 currency (Exhibit F)               68,945,055            -

Special account in foreign
 currency (Exhibit F)              339,867,637            -

           Total short-term
            investments            410,123,691  215,056,665

Long-term investments

Government securities:
   Bonos de la Rep�blica
    Argentina - discount
    bonds
   in pesos 5.83% final
    maturity in 2033
   Quantity: 4,821,350
   Face value: $ 1
   Quoted value: $ 1,223             5,896,511    7,015,064
   GDP coupon in pesos
   Quantity: 14,306,676
   Face value: $ 1
   Quoted value: $ 0,0965            1,380,594    1,702,494

   Certificates evidencing
    payment of tax liability
   (Government of the
    Province of Chubut)
   Coupons Nos, 20 to 23             2,619,722            -

Shares:
   Garantizar S,A,
   Quantity: 2000
   Class: B
   Face value: $ 1                       2,000        2,000

           Total long-term
            investments              9,898,827    8,719,558

           Total investments       420,022,518  223,776,223

                                                                                           EXHIBIT D
PAN AMERICAN ENERGY LLC (ARGENTINE BRANCH)
ALLOWANCES, PROVISIONS AND ACCRUALS (in pesos)
as of September 30, 2007 and as of December 31, 2006

                                       Balances at    Increases      Decreases       Balances as of
                                        beginning      for the         for the          09/30/07
            Main account                of the year     period          period
-------------------------------------  ------------  ------------    -----------    ----------------

Deducted from current assets:

Allowance for bad debtors in local
 currency                                 4,983,016       625,465 (1)    688,994 (2)       4,919,487
Allowance for bad debtors in foreign
 currency                                14,029,859    12,769,816 (3)          -          26,799,675
Allowance for obsolescence of
 materials                                2,864,130       175,391 (4)          -           3,039,521
                                       ------------  ------------    -----------    ----------------

Total deducted from assets               21,877,005    13,570,672        688,994          34,758,683
                                       ============  ============    ===========    ================

Included in current liabilities:

Provision for future compensation of
 personnel                                1,968,408        49,620 (5)          -           2,018,028
                                       ------------  ------------    -----------    ----------------

Subtotal current liabilities              1,968,408        49,620              -           2,018,028
                                       ------------  ------------    -----------    ----------------

Included in non current liabilities:

Accrual for lawsuits                     19,903,786     2,091,351 (6)     59,844 (7)      21,935,293
Provision for environmental
 remediation                            122,553,250    10,707,768 (8) 24,348,934 (9)     108,912,084
Provision for future compensation of
 personnel                                9,797,018     3,529,800(10)  1,727,278(11)      11,599,540
                                       ------------  ------------    -----------    ----------------

Subtotal non current liabilities        152,254,054    16,328,919     26,136,056         142,446,917
                                       ------------  ------------    -----------    ----------------

Total included in liabilities           154,222,462    16,378,539     26,136,056         144,464,945
                                       ============  ============    ===========    ================

 (1) Charges for the period, included in administrative expenses (see Exhibit G) of the Statement of Income.
 (2) Uses of the allowances during the period.
 (3) Charges for the period, made up of $ 12,550,222 included in administrative expenses (see Exhibit G) and $ 219,594
      included in financial results provided by assets, exchange gains/losses, in the Statement of Income.
 (4) Charges for the period, included in production costs (see Exhibit G) of the Statement of Income.
 (5) Transfer from the non current provision.
 (6) Charges for the period, made up of $ 1,536,243 included in production costs (see Exhibit G) and $ 555,108 included
      in administrative expenses (see Exhibit G) of the Statement of Income.
 (7) Payments for the period.
 (8) Charges for the period, consisting of $ 4,991,308 included in financial results provided by liabilities, $
      1,408,720 included in other income and expenses of the Statement of Income and $ 4,307,740 included in plants,
      wells and exploration and production facilities.
 (9) Related to the decreases included in plants, wells and exploration and production facilities of $ 21,015,567 and
      uses for the period for $ 3,333,367.
(10) Charges for the period, included in other income and expenses of the Statement of Income.
(11) Consisting of compensation paid during the period in the amount of $ 1,677,658 and the transfer referred to in
      line 5 in the amount of $ 49,620.

                                                               EXHIBIT E
PAN AMERICAN ENERGY LLC (ARGENTINE BRANCH)
COST OF SALES (in pesos)
For the nine-month period beginning January 1, 2007 and ended September
 30, 2007, comparative with the same period of the prior year

                                                 2007          2006
                                            -------------- -------------
                                              (9 months)    (9 months)

Inventories at the beginning of the year       117,701,356   107,032,601

Purchases                                      133,705,172   156,218,065

Production costs (Exhibit G)                 1,819,581,337 1,583,374,879

Inventories at period-end                   ( 106,583,184) ( 97,011,952)
                                            -------------- -------------

Cost of sales                                1,964,404,681 1,749,613,593
                                            ============== =============

                                                                                                               EXHIBIT F
PAN AMERICAN ENERGY LLC (ARGENTINE BRANCH)
ASSETS AND LIABILITIES IN FOREIGN CURRENCY
as of September 30, 2007 and as of December 31, 2006
                      Amount and type of                        Amount in   Amount and type of               Amount in
                       foreign currency  Exchange                local       foreign currency                 local
                                                                 currency                                     currency
        Item                   as of       rate                   as of             as of                     as of
                             09/30/2007                         09/30/2007        12/31/2006                 12/31/2006
--------------------- ------------------ --------             ------------- ------------------             -------------
                          US$      Euros        $         (1)           (1)     US$      Euros         (2)           (2)
ASSETS
CURRENT ASSETS

Cash on hand and in
 banks
  Cash on hand                   - 4.370   4.4355      19,383             -            - 4,370      17,419
                            35,327           3.11     109,868       129,251       71,245           215,303       232,722
                                                  -----------                                  -----------
  Cash in banks
    Domestic                 5,570           3.11      17,323                      3,472            10,491
    Foreign                 29,078           3.11      90,433       107,756    3,138,368         9,484,147     9,494,638
                                                  -----------                                  -----------

Investments
  Time deposits in
   foreign currency     22,168,828           3.11                68,945,055            -                               -
  Foreign mutual
   funds                       366           3.11                     1,138   71,163,688                     215,056,665
  Special account in
   foreign currency    109,282,198           3.11               339,867,637            -
Accounts receivable
  Domestic              79,425,626           3.11 247,013,698                106,460,311       321,723,060
  Foreign               84,365,713           3.11 262,377,367   509,391,065  119,506,796       361,149,538   682,872,598
                                                  -----------                                  -----------
  Allowance for bad
   debtors            ( 8,617,259)           3.11             ( 26,799,675) ( 4,642,574)                   ( 14,029,859)

Other receivables
  Expenses
   recoverable -
   foreign                 584,035           3.11                 1,816,349      425,037                       1,284,463
  Tax credit
   certificate           6,485,786           3.11                20,170,793            -                               -
  Miscellaneous -
   domestic              1,134,368           3.11   3,527,886                  2,675,304         8,084,768
  Miscellaneous -
   foreign               1,520,916           3.11   4,730,050     8,257,936    6,600,871        19,947,831    28,032,599
                                                  -----------                                  -----------
  Foreign affiliated
   companies               584,327           3.11                 1,817,256      132,125                         399,282

Inventories
  Advances to
   suppliers
    Foreign                 99,211     -        -                   308,547       93,245     -                   281,786
                      ------------ -----                      ------------- ------------ -----             -------------

  Total current
   assets              297,104,092 4,370                        924,013,108  305,627,888 4,370               923,624,894
                      ------------ -----                      ------------- ------------ -----             -------------

NON CURRENT ASSETS

Other receivables
  Miscellaneous -
   domestic              4,687,037     -     3.11                14,576,684    4,641,053     -                14,025,263
                      ------------ -----                      ------------- ------------ -----             -------------

  Total non current
   assets                4,687,037     -                         14,576,684    4,641,053     -                14,025,263
                      ------------ -----                      ------------- ------------ -----             -------------

  Total assets         301,791,128 4,370                        938,589,792  310,268,941 4,370               937,650,157
                      ============ =====                      ============= ============ =====             =============

US$ = US dollar
(1) As per buyer exchange rate as of September 30, 2007.
(2) As per buyer exchange rate as of December 31, 2006.

PAN AMERICAN ENERGY LLC (ARGENTINE BRANCH)                                                       EXHIBIT F
ASSETS AND LIABILITIES IN FOREIGN CURRENCY
as of September 30, 2007 and as of December 31, 2006

                 Amount and                            Amount in   Amount and                 Amount in
                   type of                                            type of
                  foreign     Exchange                  local        foreign                local currency
                   currency                             currency     currency
     Item          as of        rate                    as of         as of                     as of
                  09/30/2007                           09/30/2007   12/31/2006                12/31/2006
--------------- ------------- --------               ------------- ------------             --------------
                     US$         $          (1)           (1)          US$          (2)          (2)
LIABILITIES

CURRENT
 LIABILITIES

Accounts
 payable
  Trade -
   domestic      36,322,391     3.15    114,415,532                 37,552,721  114,986,434
  Trade -
   foreign        6,225,935     3.15    19,611,695    134,027,227   17,072,909  52,277,247   167,263,681
                                       -------------                            -----------
  Affiliated
   companies -
   domestic       2,199,605     3.15     6,928,755                  2,965,550    9,080,512
  Affiliated
   companies -
   foreign         690,942      3.15     2,176,468     9,105,223     292,913      896,899     9,977,411
                                       -------------                            -----------
  Expenses
   payable in
   local
   currency      30,000,000     3.15                  94,500,000        -

Loans
  Bonds -
   foreign            -          -                         -       100,000,000               306,200,000
  Secured notes
   payable -
    foreign           -          -                         -        1,362,702                 4,172,593
  Unsecured
   notes
   payable -
domestic         50,000,000     3.15    157,500,000                 25,000,000  76,550,000        -

  Unsecured
   notes
   payable -
foreign          49,281,414     3.15    155,236,454   312,736,454   48,842,446  149,555,569  226,105,569
                                       -------------                            -----------
  Interest
   accrued on
   bonds and
    notes
     payable     13,636,830     3.15                  42,956,014    21,386,973                65,486,912
                -------------                        ------------- ------------             --------------

  Total current
   liabilities   188,357,117                          593,324,918  254,476,214               779,206,166
                -------------                        ------------- ------------             --------------

NON CURRENT
 LIABILITIES

Accounts
 payable
  Miscellaneous
   liabilities
   - foreign r    5,510,148     3.15                  17,356,965    5,510,148                 16,872,072

Loans
  Bonds -
   foreign       350,000,000    3.15                 1,102,500,000 350,000,000              1,071,700,000
  Unsecured
   notes
   payable -
    domestic     15,000,000     3.15    47,250,000                      -            -
  Unsecured
   notes
   payable -
    foreign      582,780,000    3.15   1,835,757,000 1,883,007,000 244,034,550  747,233,793  747,233,793
                -------------          ------------- ------------- ------------ ----------- --------------

  Total current
   liabilities   953,290,148                         3,002,863,965 599,544,698              1,835,805,865
                -------------                        ------------- ------------             --------------

  Total
   liabilities  1,141,647,265                        3,596,188,883 854,020,912              2,615,012,031
                =============                        ============= ============             ==============
US$ = US dollar
(1) As per seller exchange rate as of September 30, 2007.
(2) As per seller exchange rate as of December 31, 2006.

                                                                                              EXHIBIT G
PAN AMERICAN ENERGY LLC (ARGENTINE BRANCH)
INFORMATION REQUIRED BY ART. 64, CLAUSE 1b) OF LAW 19550, for the nine-month period beginning January
 1, 2007 and ended September 30, 2007, comparative with the same period of the prior year (in pesos)

                                           Production    Administrative
                  Items                       cost          expenses       Total 2007      Total 2006
----------------------------------------- ------------- ---------------- -------------- ---------------
                                                                           (9 months)     (9 months)

Fees and compensation for services            7,666,492       10,415,862     18,082,354      13,179,973
Salaries, wages and benefits to
personnel                                   107,219,419       40,369,450    147,588,869      96,898,565
Social security contributions                10,619,112        7,016,226     17,635,338      14,016,195
Taxes, assessments and other tributes       567,293,326       94,035,562    661,328,888     643,190,888
Depreciation of property, plant and
 equipment (Exhibit A)                      565,072,476        5,416,259    570,488,735     481,912,961
Intangible asset amortization (Exhibit B)     1,483,656                -      1,483,656       1,444,304
Transportation, freight and storage
 expenses                                    82,950,424           49,910     83,000,334      61,397,874
Contracted services                         253,826,629        2,907,881    256,734,510     264,068,338
Travel and accommodation expenses             5,544,444        4,742,544     10,286,988       9,022,032
Building rentals and maintenance                938,816        9,110,818     10,049,634       8,759,860
Environmental remediation                    10,900,144                -     10,900,144       7,714,016
Bad debtors (Exhibit D)                               -       13,175,687     13,175,687      10,638,982
Lawsuits (Exhibit D)                          1,536,243          555,108      2,091,351       2,950,774
Obsolescence of materials (Exhibit D)           175,391                -        175,391               -
Production, exploration and
 administrative
  general expenses                          204,354,765       16,443,615    220,798,380     131,458,581
                                          ------------- ---------------- -------------- ---------------

Total 2007 (9 months)                     1,819,581,337      204,238,922  2,023,820,259
                                          ============= ================ ==============

Total 2006 (9 months)                     1,583,374,879      163,278,464                  1,746,653,343
                                          ============= ================                ===============

                                                                                                               EXHIBIT H
PAN AMERICAN ENERGY LLC (ARGENTINE BRANCH)
Balance sheet as of September 30, 2007 and as of December 31, 2006
TERMS, INTEREST RATES AND ADJUSTMENT CLAUSES OF SHORT-TERM INVESTMENTS, LOANS, RECEIVABLES AND PAYABLES (in pesos)
                        Investments               Receivables                Payables                   Loans
                 -------------------------------------------------------------------------------------------------------
                  09/30/2007   12/31/2006    09/30/2007  12/31/2006  09/30/2007   12/31/2006   09/30/2007   12/31/2006
                 -------------------------------------------------------------------------------------------------------

Total amount
 without an
established term 1,382,594 (1)  1,704,494  56,801,881 (3)61,217,175  684,299,239  703,702,130       -            -

To become due:

Up to 3 months    408,813,830  215,056,665  668,118,096  821,770,799 770,297,307  746,810,041  154,584,584  793,674,710
From 3 to 6
 months             654,931         -         894,231     1,780,744    504,507    391,765,651  212,798,250  12,719,548
From 6 to 9
 months                             -         833,854     1,087,619  144,886,542    492,102    36,810,900   59,108,848
From 9 to 12
 months             654,930         -         782,140      697,929   31,020,607   22,356,302   55,298,250   11,519,244
From 1 to 2 years  1,309,861        -        3,978,600    2,814,716    226,223      215,609    264,937,050  614,032,179
From 2 to 3 years  1,309,861        -        1,585,037     903,215        -            -       608,265,000  420,959,321
From 3 to 4 years      -            -        1,241,770     491,328        -            -       687,015,000  111,306,762
From 4 to 5 years      -            -         318,914      332,877        -            -       687,015,000  485,663,820
From 5 to 6 years      -            -          74,794      59,678         -            -       222,390,000  485,663,820
From 6 to 7 years      -            -            -            -           -            -       222,390,000  34,018,820
From 7 to 8 years      -            -            -            -           -            -       155,988,000  34,018,820
From 8 to 9 years      -            -            -            -           -            -       83,443,500   34,049,440
From 9 to 10
 years                 -            -            -            -           -            -       36,193,500   45,930,000
From 10 to 11
 years                 -            -            -            -           -            -       17,869,950        -
Over 11 years    5,896,511 (2)7,015,064 (2)      -            -           -            -            -            -
                 -------------------------------------------------------------------------------------------------------

Subtotal          420,022,518  223,776,223  734,629,317  891,156,0801,631,234,4251,865,341,8353,444,998,9843,142,665,332

Other items that
 are not to be
collected or paid
 in cash               -            -        5,035,084   12,183,347       -            -            -            -
                 -------------------------------------------------------------------------------------------------------

Total             420,022,518  223,776,223  739,664,401  903,339,4271,631,234,4251,865,341,8353,444,998,9843,142,665,332
                 =======================================================================================================

(1) It includes $ 1,380,594 relating to GDP coupons in pesos. The government securities linked to the GDP become due on
 12/31/2035. However, in the event a certain GDP rate growth is exceeded in the country, the bondholders shall be
 entitled to annual payments.
(2) It is amortized as from 06/30/2024 in 20 semiannual installments (on 06/30 and 12/31 of each year), the final
 maturity of which is on 12/31/2033.
(3) It includes the overdue receivables detailed in item 3.a of the supplementary information.

                                                                                                               EXHIBIT H
PAN AMERICAN ENERGY LLC (ARGENTINE BRANCH)
Balance sheet as of September 30, 2007 and as of December 31, 2006 (Cont.)
TERMS, INTEREST RATES AND ADJUSTMENT CLAUSES OF SHORT-TERM INVESTMENTS, LOANS, RECEIVABLES AND PAYABLES (in pesos)

                     Investments                       Receivables
          --------------------------------- ---------------------------------
             09/30/2007       12/31/2006       09/30/2007       12/31/2006
          ---------------- ---------------- ---------------- ----------------
          Rate    Pesos    Rate    Pesos    Rate    Pesos    Rate    Pesos
          ---- ----------- ---- ----------- ---- ----------- ---- -----------

Annual
 fixed
 rate in
 US$         -           -    -           -    -           -    -           -
Annual
 fixed
 rate in
 US$         -           -    -           -    -           -    -           -
Annual
 fixed
 rate in
 US$         -           -    -           -    -           -    -           -
Annual
 fixed
 rate in
 US$         -           -    -           -    -           -    -           -
Annual
 fixed
 rate in
 US$         -           -    -           -    -           -    -           -
Annual
 fixed
 rate in
 US$         -           -    -           -    -           -    -           -
Annual
 fixed
 rate in
 US$         -           -    -           -    -           -    -           -
Annual
 fixed
 rate in
 US$         -           -    -           -    -           -    -           -
Annual
 fixed
 rate in
 US$         -           -    -           -    -           -    -           -
Annual
 fixed
 rate in
 US$         -           -    -           - 4.50      14,286 4.50      28,574
Annual
 fixed
 rate in
 US$         -           -    -           -    -           - 8.00   2,362,909
CER plus
 annual
 fixed
 rate in
 $        4.00   3,929,583    -           -    -           -    -           -
Average
 annual
 variable
 rate in
 $           -           -    -           - 8.00  11,810,478 8.00   7,906,016
Average
 annual
 variable
 rate in
 $           -           -    -           -    -           -    -           -
Annual
 fixed
 rate in
 US$         -           -    -           - 8.50   1,766,465  8.5   1,079,127
Average
 annual
 variable
 rate in
 US$         -           -    -           -    -           -    -           -
Average
 annual
 fixed
 rate in
 US$         -           -    -           -    -           -    -           -
Annual
 variable
 rate in
 U$S      5.28       1,138 5.26 215,056,665    -           -    -           -
Annual
 variable
 rate in
 US$      5.29 339,867,637    -           -    -           -    -           -
Annual
 variable
 rate in
 US$      3.85  68,945,055    -           -    -           -    -           -
Annual
 fixed
 rate in
 $ plus
 CER      5.83   5,896,511 5.83   7,015,064    -           -    -           -
Non-
 interest
 bearing     -   1,382,594    -   1,704,494    - 726,073,172    - 891,962,801
               -----------      -----------      -----------      -----------

Total          420,022,518      223,776,223      739,664,401      903,339,427
               ===========      ===========      ===========      ===========

                        Payables                                     Loans
          ------------------------------------- -----------------------------------------------
              09/30/2007         12/31/2006           09/30/2007              12/31/2006
          ------------------ ------------------ ----------------------- -----------------------
          Rate     Pesos     Rate     Pesos     Rate        Pesos       Rate        Pesos
          ---- ------------- ---- ------------- ----- ----------------- ----- -----------------

Annual
 fixed
 rate in
 US$         -             -    -             -     -                 -  6.75       306,200,000
Annual
 fixed
 rate in
 US$         -             -    -             - 7.125       315,000,000 7.125       306,200,000
Annual
 fixed
 rate in
 US$         -             -    -             -     -                 -  7.00         4,172,594
Annual
 fixed
 rate in
 US$         -             -    -             -  5.45         3,776,667  5.45         5,565,507
Annual
 fixed
 rate in
 US$         -             -    -             -  6.18           128,438  6.18           187,272
Annual
 fixed
 rate in
 US$         -             -    -             -  7.56       280,003,500  7.56       306,200,000
Annual
 fixed
 rate in
 US$         -             -    -             -  6.97       354,375,000  6.97       413,370,000
Annual
 fixed
 rate in
 US$         -             -    -             -  5.66        47,250,000  5.66        45,930,000
Annual
 fixed
 rate in
 US$         -             -    -             -  8.00        31,500,000  8.00        30,620,000
Annual
 fixed
 rate in
 US$         -             -    -             -     -                 -  5.00        76,550,000
Annual
 fixed
 rate in
 US$         -             -    -             -  7.75       787,500,000  7.75       765,500,000
CER plus
 annual
 fixed
 rate in
 $           -             -    -             -     -                 -     -                 -
Average
 annual
 variable
 rate in
 $           -             -    -             -  8.44       103,799,516  7.78       275,057,276
Average
 annual
 variable
 rate in
 $           -             -    -             -     -                 - 10.25       446,709,189
Annual
 fixed
 rate in
 US$         -             -    -             -     -                 -     -                 -
Average
 annual
 variable
 rate in
 US$         -             -    -             -  7.51     1,273,959,849  6.48        94,916,582
Average
 annual
 fixed
 rate in
 US$         -             -    -             -  5.85       204,750,000     -                 -
Annual
 variable
 rate in
 U$S         -             -    -             -     -                 -     -                 -
Annual
 variable
 rate in
 US$         -             -    -             -     -                 -     -                 -
Annual
 variable
 rate in
 US$         -             -    -             -     -                 -     -                 -
Annual
 fixed
 rate in
 $ plus
 CER         -             -    -             -     -                 -     -                 -
Non-
 interest
 bearing     - 1,631,234,425    - 1.865.341.835     -                 -     -                 -
               -------------      -------------       -----------------       -----------------

Total          1,631,234,425      1.865.341.835       (1) 3,402,042,970       (1) 3,077,178,420
               =============      =============       =================       =================

(1) It only includes the principal at face value.

                                                                                                             EXHIBIT I
PAN AMERICAN ENERGY LLC (ARGENTINE BRANCH)
Balance sheet as of September 30, 2007 and as of December 31, 2006
PARTICIPATION IN JOINT VENTURES (in pesos)


               Lindero     Lindero     Aguada      Aguada        San         San                              Estancia
                                                                                                                La
             Atravesado  Atravesado    Pichana     Pichana      Roque       Roque     Acambuco    Acambuco    Escondida
               62,50%      62,50%      18,18%      18,18%      16,47 %     16,47 %     52,00 %     52,00 %     25,00%
              09/30/2007  12/31/2006  09/30/2007  12/31/2006  09/30/2007  12/31/2006  09/30/2007  12/31/2006 09/30/2007
             ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------

ASSETS
------------
CURRENT
 ASSETS
------------
Cash on hand
 and in
 banks         3,394,403       8,006     149,116     132,325     353,440      46,796      53,264     681,589        661
Other
 receivables     865,502     885,345   6,736,822   1,608,315   3,880,693      27,819     393,589   2,503,876    442,239
Inventories    5,881,799   5,608,560   8,124,146  10,779,553   9,384,116   8,325,385   2,173,640   1,881,612     67,944
             ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------

Total
 current
 assets       10,141,704   6,501,911  15,010,084  12,520,193  13,618,249   8,400,000   2,620,493   5,067,077    510,844
             ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------

NON CURRENT
 ASSETS
------------
Property,
 plant and
equipment    130,586,232 100,752,309 260,624,732 210,261,214 241,028,778 211,498,427 643,992,924 599,158,484  5,828,744
Intangible
 assets                -           -           -       8,059           -           -           -           -    105,635
             ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------

Total non
 current
 assets      130,586,232 100,752,309 260,624,732 210,269,273 241,028,778 211,498,427 643,992,924 599,158,484  5,934,379
             ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------

Total assets 140,727,936 107,254,220 275,634,816 222,789,466 254,647,027 219,898,427 646,613,417 604,225,561  6,445,223
             =========== =========== =========== =========== =========== =========== =========== =========== ==========

                                                         Costa      Costa      Costa      Costa
                                                         Afuera     Afuera     Afuera     Afuera
                       Estancia                        Argentina  Argentina  Argentina  Argentina  Anticlinal Anticlinal
                         La
                       Escondida Bandurria  Bandurria  Bloque 40  Bloque 40  Bloque 46  Bloque 46    Funes      Funes
                        25,00%     18,18%     18,18%     50,00%     50,00%     50,00%     50,00%     80,00%     80,00%
                      12/31/2006 09/30/2007 12/31/2006 09/30/2007 12/31/2006 09/30/2007 12/31/2006 09/30/2007 12/31/2006
                      ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------

ASSETS
---------------------
CURRENT ASSETS
---------------------
Cash on hand and in
 banks                     1,384     68,690     88,614          -          -          -          -      1,332      1,644
Other receivables        395,342      8,914     31,301     63,424     65,562     29,264     29,264  1,089,693  1,087,844
Inventories               76,352          -          -          -          -          -          -          -          -
                      ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------

Total current assets     473,078     77,604    119,915     63,424     65,562     29,264     29,264  1,091,025  1,089,488
                      ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------

NON CURRENT ASSETS
---------------------
Property, plant and
equipment              5,090,205  2,117,424  4,519,810 13,835,541 11,175,237  1,113,743    588,337  4,232,740  2,262,167
Intangible assets        210,418          -          -          -          -          -          -          -          -
                      ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------

Total non current
 assets                5,300,623  2,117,424  4,519,810 13,835,541 11,175,237  1,113,743    588,337  4,232,740  2,262,167
                      ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------

Total assets           5,773,701  2,195,028  4,639,725 13,898,965 11,240,799  1,143,007    617,601  5,323,765  3,351,655
                      ========== ========== ========== ========== ========== ========== ========== ========== ==========

                                                                                                           EXHIBIT I
PAN AMERICAN ENERGY LLC (ARGENTINE BRANCH)
Balance sheet as of September 30, 2007 and as of December 31, 2006
PARTICIPATION IN JOINT VENTURES (in pesos)


                Lindero     Lindero     Aguada      Aguada        San         San                              Estancia
                                                                                                                 La
              Atravesado  Atravesado    Pichana     Pichana      Roque       Roque     Acambuco    Acambuco    Escondida
                62,50%      62,50%      18,18%      18,18%      16,47%      16,47%      52,00%      52,00%      25,00%
Balance sheet 09/30/2007  12/31/2006  09/30/2007  12/31/2006  09/30/2007  12/31/2006  09/30/2007  12/31/2006  09/30/2007
------------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------

LIABILITIES
-------------
CURRENT
 LIABILITIES
-------------
Accounts
 payable        9,256,051   3,103,235  38,951,140  39,892,511  14,345,687  14,087,777  24,524,551  71,445,119    883,115
Payroll and
 social
security
 contri-
butions           534,253     500,717           -           -           -           -     442,370     574,386          -
Taxes payable      90,144      85,849           -           -      19,656     307,032   1,297,812     899,221    124,239
              ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------

Total current
 liabilities    9,880,448   3,689,801  39,951,140  39,892,511  14,365,343  14,394,809  26,264,733  72,918,726  1,007,354
              ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------

NON CURRENT
LIABILITIES
-------------
Accounts
 payable        2,351,951   2,036,355     219,132     219,132     876,528     876,528   1,806,738   1,521,884          -
Provision for
environmental
 remediation   11,203,820   9,177,151   5,480,067   3,737,323   8,541,479   7,186,139   3,105,012   2,928,406     57,846
Accruals        5,610,557   5,137,832     372,388     365,027     715,396     325,076   2,328,162   2,098,309          -
              ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------

Total non
 current
liabilities    19,166,328  16,351,338   6,071,587   4,321,482  10,133,403   8,387,743   7,239,912   6,548,599     57,846
              ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------

              -----------
Total
 liabilities   29,046,776  20,041,139  45,022,727  44,213,993  24,498,746  22,782,552  33,504,645  79,467,325  1,065,200
              ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------

Owners'
 equity       111,681,160  87,213,081 230,612,089 178,575,473 230,148,281 197,115,875 613,108,772 524,758,236  5,380,023
              ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------- ----------

Total         140,727,936 107,254,220 275,634,816 222,789,466 254,647,027 219,898,427 646,613,417 604,225,561  6,445,223
              =========== =========== =========== =========== =========== =========== =========== =========== ==========

                                                         Costa      Costa      Costa      Costa
                                                         Afuera     Afuera     Afuera     Afuera
                       Estancia                        Argentina  Argentina  Argentina  Argentina  Anticlinal Anticlinal
                         La
                       Escondida Bandurria  Bandurria  Bloque 40  Bloque 40  Bloque 46  Bloque 46    Funes      Funes
                        25,00%     18,18%     18,18%     50,00%     50,00%     50,00%     50,00%     80,00%     80,00%
Balance sheet         12/31/2006 09/30/2007 12/31/2006 09/30/2007 12/31/2006 09/30/2007 12/31/2006 09/30/2007 12/31/2006
--------------------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------

LIABILITIES
---------------------
CURRENT LIABILITIES
---------------------
Accounts payable         250,581    424,601    823,060          -          -          -     13,283  2,254,286  1,376,434
Payroll and social
security contri-
butions                        -          -          -          -          -          -          -      6,711      1,928
Taxes payable             95,443      6,793          -          -          -          -          -      5,386     10,000
                      ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------

Total current
 liabilities             346,024    431,394    823,060          -          -          -     13,283  2,266,383  1,388,362
                      ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------

NON CURRENT
LIABILITIES
---------------------
Accounts payable               -          -          -          -          -          -          -          -          -
Provision for
environmental
 remediation              92,200          -          -          -          -          -          -    762,404    972,617
Accruals                       -          -          -          -          -          -          -          -          -
                      ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------

Total non current
liabilities               92,200          -          -          -          -          -          -    762,404    972,617
                      ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------

Total liabilities        438,224    431,394    823,060          -          -          -     13,283  3,028,787  2,360,979
                      ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------

Owners' equity         5,335,477  1,763,634  3,816,665 13,898,965 11,240,799  1,143,007    604,318  2,294,978    990,676
                      ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------

Total                  5,773,701  2,195,028  4,639,725 13,898,965 11,240,799  1,143,007    617,601  5,323,765  3,351,655
                      ========== ========== ========== ========== ========== ========== ========== ========== ==========

                                                                                                               EXHIBIT I
PAN AMERICAN ENERGY LLC (ARGENTINE BRANCH)
Statement of income for the period beginning January 1 and ended September 30, 2007, comparative with the same period of
 the prior year
PARTICIPATION IN JOINT VENTURES (in pesos)


                 Lindero      Lindero       Aguada        Aguada        San          San
                Atravesado   Atravesado     Pichana      Pichana       Roque        Roque
                  62,50%       62,50%       18,18%        18,18%       16,47%       16,47%
                   2007         2006         2007          2006         2007         2006
               ------------ ------------ ------------- ------------ ------------ ------------
STATEMENT OF
 INCOME         (9 months)   (9 months)   (9 months)    (9 months)   (9 months)   (9 months)
--------------
Sales (1)                 -            -             -            -            -            -
Cost of sales  (41,270,638) (34,794,596) ( 83,936,463) (68,669,227) (39,725,599) (35,455,991)
               ------------ ------------ ------------- ------------ ------------ ------------

Gross result   (41,270,638) (34,794,596) ( 83,936,463) (68,669,227) (39,725,599) (35,455,991)
Administrative
 expenses                 -            -             -            -            -            -
               ------------ ------------ ------------- ------------ ------------ ------------
Operating
 result        (41,270,638) (34,794,596) ( 83,936,463) (68,669,227) (39,725,599) (35,455,991)

Financial
 results - net   ( 339,323)   ( 446,495)    ( 161,136)   ( 111,414)   ( 310,410)   ( 255,600)
Other income
 and expenses
 - net            1,070,545 ( 1,657,419)     6,089,881    ( 20,262)       65,142   ( 229,183)
               ------------ ------------ ------------- ------------ ------------ ------------

Net result     (40,539,416) (36,898,510)  (78,007,718) (68,800,903) (39,970,867) (35,940,774)
               ============ ============ ============= ============ ============ ============


                                             Estancia      Estancia
                 Acambuco      Acambuco    La Escondida  La Escondida   Bandurria  Bandurria
                  52,00%        52,00%        25,00%        25,00%       18,18%     18,18%%
                   2007          2006          2007          2006         2007       2006
               ------------- ------------- ------------- ------------- ----------- ---------
STATEMENT OF                                                                          (9
 INCOME         (9 months)    (9 months)    (9 months)    (9 months)   (9 months)   months)
--------------
Sales (1)                  -             -             -             -           -         -
Cost of sales  (124,386,867) (113,632,935)   (2,372,648)   (3,751,978)           -         -
               ------------- ------------- ------------- ------------- ----------- ---------

Gross result   (124,386,867) (113,632,935)   (2,372,648)   (3,751,978)           -         -
Administrative
 expenses                  -             -             -             -           -         -
               ------------- ------------- ------------- ------------- ----------- ---------
Operating
 result        (124,386,867) (113,632,935)   (2,372,648)   (3,751,978)           -         -

Financial
 results - net        75,311    ( 234,476)        19,492     ( 16,286)    ( 2,668)  ( 3,761)
Other income
 and expenses
 - net            ( 123,616)       821,595             -             - (2,814,303) (611,978)
               ------------- ------------- ------------- ------------- ----------- ---------

Net result     (124,435,172) (114,689,006)   (2,353,156)   (3,768,264) (2,816,971) (615,739)
               ============= ============= ============= ============= =========== =========

                Costa      Costa      Costa      Costa
                 Afuera     Afuera     Afuera     Afuera
               Argentina  Argentina  Argentina  Argentina  Anticlinal   Anticlinal
               Bloque 40  Bloque 40  Bloque 46  Bloque 46     Funes       Funes
                50,00%     50,00%     50,00%     50,00%      80,00%       80,00%
                 2007       2006       2007       2006        2007         2006
               --------- ----------- --------- ----------- ----------- ------------
STATEMENT OF      (9                    (9
 INCOME         months)  (9 months)   months)  (9 months)  (9 months)   (9 months)
--------------
Sales (1)              -           -         -           -           -            -
Cost of sales          -           -         -           - (5,403,925) (10,200,885)
               --------- ----------- --------- ----------- ----------- ------------

Gross result           -           -         -           - (5,403,925)  (10,200,885
Administrative
 expenses              -           -         -           -           -            -
               --------- ----------- --------- ----------- ----------- ------------
Operating
 result                -           -         -           - (5,403,925)  (10,200,885

Financial
 results - net         -           -         -           -   ( 43,058)    ( 34,414)
Other income
 and expenses
 - net            37,407 (3,443,020) (492,968) (3,252,953)           6            -
               --------- ----------- --------- ----------- ----------- ------------

Net result        37,407 (3,443,020) (492,968) (3,252,953) (5,446,977)  (10,235,299
               ========= =========== ========= ----------- =========== ============

(1) No sales were recorded in the joint ventures because production is directly assigned to each participant.

FINANCIAL STATEMENTS AS OF SEPTEMBER 30, 2007

REPORTING SUMMARY REQUIRED BY RESOLUTION No. 290/97 OF THE NATIONAL SECURITIES
COMMISSION

1. Comment on the Branch's activity

1.1. Operating activities

Pan American Energy LLC (Argentine Branch) is mainly engaged in the exploration,
development and production of hydrocarbons. The Head Office of the Branch is Pan
American Energy LLC, which also has various subsidiaries and affiliates that
carry out activities in Argentina and other Mercosur countries. BP and Bridas
Corporation hold interests that account for 60% and 40%, respectively of the
Branch's ownership.

During the first nine-month period of 2007, with a daily average production of
218.1 thousand barrels of oil, the Branch together with subsidiaries of Head
Office that develop their activities in the country, rank second in the
production of natural gas and oil in Argentina.

1.2. Issuance of bonds

On February 11, 1997, Amoco Argentina Oil Company (Argentine Branch) issued the
Second Series of Bonds in the amount of US$ 100,000,000 due in ten years, at a
6.75% rate per annum. The bonds were paid upon maturity on February 1, 2007.
This issuance completes the maximum amount of the short and medium term bond
program of US$ 200,000,000 approved by the National Securities Commission
through Resolution No. 10982 dated July 13, 1995.

As a result of the transfer of assets and liabilities referred to in the second
paragraph of Note 1 to these financial statements, Amoco Argentina Oil Company
(Argentine Branch) transferred the above mentioned bonds to Pan American Energy
LLC (Argentine Branch). Such Bonds were guaranteed until repayment, in February
2007, by BP Company North America Inc.

On February 21, 2002, through Resolution No. 14123, the CNV authorized the
Global Program for the Issuance of Bonds of Pan American Energy LLC (Argentine
Branch) (the "Global Program") in the total amount of US$ 1,000,000,000.

On October 27, 2004, the Branch issued Bonds Class 3 in the amount of US$
100,000,000 under the Global Program. The bonds become due in five years
(October 27, 2009) with a 7.125% annual fixed interest rate to be paid on a
half-yearly basis. The price of the issuance was 99.483%, nominal value. The
funds derived from this issuance were allocated to investments in property and
equipment and the repayment of loans.

On August 9, 2006, the Branch issued Bonds Class 4 in the amount of US$
250,000,000 under the Global Program, to be repaid in two equal installments
becoming due on February 9, 2011 and February 9, 2012, with interest accruing at
an annual fixed interest rate of 7.75% to be paid on a half-yearly basis. The
price of the issuance was 100.00% of the nominal value. The funds obtained in
this issue will be allocated to investments in property and equipment, working
capital and repayment of loans.

1.3. Loan agreements

Pan American Energy LLC (Argentine Branch) obtained the following loans at a
five-year term, with interest compounded bi-annually amortized in monthly
installments: 1) On July 20, 2001, in the amount of US$ 72,051,406, with
interest accruing at an annual rate of 7.54%, with the first installment falling
due on April 19, 2002 and the repayment term being completed on June 20, 2006,
and 2) on September 17, 2001, in the amount of US$ 40,001,944, with interest
accruing at an annual rate of 6.72%, with the first installment falling due on
June 20, 2002 and completing repayment on August 21, 2006. For the purpose of
fixing the interest rate, the Branch has entered into integrated derivative
transactions, the impact of which has been included in the cost of the
transactions. Both loans have been guaranteed by Pan American Energy LLC until
the repayment thereof in June and August 2006.

On July 11, 2005, the Branch obtained from the International Finance Corporation
(IFC) a loan in the amount of US$ 250,000,000 guaranteed by Head Office and
consisting of three tranches:

- "A" in the amount of US$ 100,000,000, with interest accruing at an annual
fixed rate of 7.56%, through an interest rate swap with IFC, amortizable on
six-month installments basis and becoming due in July 2015;

- "B" in the amount of US$ 135,000,000, at an annual fixed rate of 6.97%,
through an interest rate swap with IFC, amortizable on a six-month installments
basis, and becoming due in July 2012; and

- "C" in the amount of US$ 15,000,000, at an annual fixed base rate of 5.66%
plus additional interest calculated in relation to Head Office's economic
performance, becoming due in July 2016.

As of December 31, 2005, the amount of the loans had been fully disbursed.

The first principal installment for tranches "A" and "B" was paid on January 15,
2007.

The funds obtained were used to partially fund the 2005 investment program in
the San Jorge Gulf.

On July 13, 2007, the Branch obtained from the International Finance Corporation
(IFC) a loan in the amount of U$S 550,000,000, consisting of two tranches:

- "A" in the amount of US$ 150,000,000, amortizable on a six-month installment
basis and becoming due in April 2018; and

- "B-1" in the amount of US$ 158,500,000, amortizable on a six-month installment
basis and becoming due in April 2014, and "B-2" in the amount of US$
241,500,000, amortizable on a six-month installment basis and becoming due in
April 2015.

The loan is guaranteed by Head Office and the funds obtained shall be destined
to partially finance the investment program that the Company is planning to
launch in Cerro Drag�n, in the San Jorge Gulf basin, located in the provinces of
Santa Cruz and Chubut.

To the date of these financial statements, a disbursement of US$ 400,000,000 was
made in relation to the referred loan, and the outstanding US$ 150,000,000 are
planned to be disbursed during the first quarter of the following year.

2. Balance sheet items as of September 30, 2007 (in pesos)

                           Balance         Balance         Balance         Balance         Balance
                            sheet           sheet           sheet           sheet           sheet
                            as of           as of           as of           as of           as of
                         09/30/2007      09/30/2006      09/30/2005      09/30/2004      09/30/2003
                       --------------- --------------- --------------- --------------- ---------------

Current assets           1,255,210,579   1,558,787,365   1,060,737,642     745,780,799     576,207,301

Non current assets       6,916,671,378   5,572,249,794   4,647,841,128   3,967,829,320   3,916,949,439
                       --------------- --------------- --------------- --------------- ---------------

Total                    8,171,881,957   7,131,037,159   5,708,578,770   4,713,610,119   4,493,156,740
                       =============== =============== =============== =============== ===============

Current liabilities      1,406,200,947   2,027,190,446   1,303,610,293   1,738,521,186   1,105,155,059

Non current
 liabilities             3,691,967,755   2,892,836,122   1,822,791,116   1,076,255,148   1,681,050,538
                       --------------- --------------- --------------- --------------- ---------------

Subtotal                 5,098,168,702   4,920,026,568   3,126,401,409   2,814,776,334   2,786,205,597
                       --------------- --------------- --------------- --------------- ---------------
Account with Head
 Office                  2,612,474,248   1,749,771,584   2,120,938,354   1,459,373,785   1,267,491,143

Capital allocated to
 the Branch                221,779,007     221,779,007     221,779,007     200,000,000     200,000,000

Capital adjustment         239,460,000     239,460,000     239,460,000     239,460,000     239,460,000
                       --------------- --------------- --------------- --------------- ---------------

Total                    8,171,881,957   7,131,037,159   5,708,578,770   4,713,610,119   4,493,156,740
                       =============== =============== =============== =============== ===============

3. Income statement items as of September 30, 2007 (in pesos)

                              Nine-month     Nine-month     Nine-month     Nine-month    Nine-month
                             period ended   period ended   period ended   period ended  period ended
                              09/30/2007     09/30/2006     09/30/2005     09/30/2004    09/30/2003
                            -------------- -------------- -------------- -------------- -------------

Ordinary operating income    1,830,837,686  2,089,205,309  1,365,117,208  1,039,958,469   692,418,985

Financial results           ( 264,041,479) ( 103,584,008)  ( 44,910,282) ( 120,722,551) (110,847,522)

Other income and expenses -
 net                         ( 48,567,708)  ( 36,853,241)  ( 19,698,264)  ( 97,631,702) ( 73,387,832)
                            -------------- -------------- -------------- -------------- -------------

Income before taxes          1,518,228,499  1,948,768,060  1,300,508,662    821,604,216   508,183,631

Income tax/minimum deemed
 income tax                 ( 578,842,019) ( 727,581,754) ( 491,427,561) ( 358,188,289) (182,782,653)

Deferred tax                    50,822,677     45,461,507     31,874,626    122,851,793    94,229,283
                            -------------- -------------- -------------- -------------- -------------

Net income                     990,209,157  1,266,647,813    840,955,727    586,267,720   419,630,261
                            ============== ============== ============== ============== =============

4. Statistical data

                          Nine-month     Nine-month      Nine-month      Nine-month      Nine-month
                         period ended   period ended    period ended    period ended    period ended
                          09/30/2007     09/30/2006      09/30/2005      09/30/2004      09/30/2003
                        -------------- --------------- --------------- --------------- ---------------
                          In cubic
                            meters     In cubic meters In cubic meters In cubic meters In cubic meters
                        -------------- --------------- --------------- --------------- ---------------
Production of crude oil   4,598,566       4,562,441       4,424,441       4,259,197       3,898,929
Sale of crude oil         4,591,064       4,519,444       4,226,528       4,279,900       3,846,215

                                     Nine-month        Nine-month       Nine-month        Nine-month       Nine-month
                                    period ended      period ended     period ended      period ended     period ended
                                     09/30/2007        09/30/2006       09/30/2005        09/30/2004       09/30/2003
                                  ----------------- ---------------- ----------------- ---------------- ----------------
                                   In cubic meters  In cubic meters   In cubic meters  In cubic meters  In cubic meters
                                  ----------------- ---------------- ----------------- ---------------- ----------------

Production of natural gas                 3,826,540        3,619,986         3,286,420        3,146,525        2,543,477
Sale of natural gas                       3,941,524        3,512,136         3,312,333        3,003,178        2,324,174
Transportation of natural gas                 2,756           11,390           221,618          282,390          211,563

                          In tons         In tons        In tons         In tons         In tons
                       --------------  -------------  --------------  --------------  --------------

Production of L.P.G.       53,518         76,160          45,464          50,505          43,348
Sale of L.P.G.             51,823         83,229          32,229          54,231          49,283

5. Ratios

                         Financial      Financial       Financial      Financial       Financial
                        statements      statements     statements      statements      statements
                           as of          as of           as of          as of           as of
                        09/30/2007      09/30/2006     09/30/2005      09/30/2004      09/30/2003
                       -------------  --------------  -------------  --------------  --------------

Current ratio              0,89            0,77           0,81            0,43            0,52
Indebtedness               1,66            2,23           1,21            1,48            1,63
Tied - up funds            0,85            0,78           0,81            0,84            0,87
Solvency                   0,60            0,45           0,83            0,67            0,61

6. Business prospects

Pan American Energy LLC (Argentine Branch) is working to maintain and increase
its operating efficiency in connection with the oil and gas exploration and
production, to continue increasing its share in hydrocarbon production in
Argentina, satisfying in this way the needs derived from a sustained growth rate
of the country's economy as well as to comply with its existing contractual
obligations. The Branch strives to provide its personnel and contractors with
healthy and safe working conditions while preserving the environment.

The Branch is strongly engaged with the concerns and challenges posed by the
communities where it operates, by developing different social responsibility
programs (CSR).

During the first nine-month period of 2007, the Branch's oil production grew by
0,8% and natural gas production rose by 5,7% with respect to the same period of
the prior year. This growth results from the active investment program
successfully implemented by Pan American Energy in the last years, which has
allowed it to double hydrocarbon production from 1999 to 2006.

After the 2002 crisis, the country has managed to achieve high GDP growth with
relatively low inflation rates though growing recently and, a stable currency,
with unemployment rates that have been significantly reduced.

In the first nine-month period of 2007, the GDP went on growing at a sustained
rate, which indicates that a growing trend - initiated 22 quarters ago -
continues. It is estimated that the GDP will grow by 8.4% in 2007. The
unemployment rate is about 8.5%.

The National Government exceeded the primary fiscal surplus expected for the
first nine-month period of 2007 by 27.3%, reaching a primary fiscal surplus of
22,796 million pesos, up 19.4% with respect to the same period of the prior
year. The level of foreign indebtedness as of June 30, 2007 increased with
respect to the same date of the prior year and amounted to US$ 138,315 million.
The country's international reserves amounted US$ 42,891 million as of September
30, 2007.

The increase in the oil industry costs is a source of concern, since it clearly
exceeds the general increase in prices.

As previously informed, revenues from the exploration and production of oil and
gas were affected by the amendments to the regulations in force. In the case of
oil, as from March 2002, an increasing rate of up to 45% of export tariffs on
exports has been applied, which has also affected the sales prices in the
domestic market. In the case of natural gas, in January 2002, the wellhead price
of natural gas was redenominated into pesos and frozen and, afterwards, export
tariffs on exports and quantitative restrictions to them were established. In
April 2004, the Secretary of Energy and the natural gas producers signed an
agreement named "regularization of wellhead prices". The term of this agreement
expired on December 31, 2006, after which, and at the request of the related
authorities, a new agreement was signed that shall be in force until December
31, 2011 and which is currently being performed.

The new agreement, approved last June by Resolution 599/07 of the Secretary of
Energy, compels producers (including the Branch) to satisfy the domestic demand
up to the levels reached in 2006 plus the growth of the residential market
during the validity thereof by setting out new guidelines for price changes.

In relation to export tariffs on gas exports, on July 25, 2006, the Ministry of
Economy, through Resolution No. 534/2006, increased them to US$ 2,25 per million
BTU.

On June 29, 2006, the National Government signed a form contract with the
Republic of Bolivia to import gas from such country. In October 2006, ENARSA and
Yacimientos Petrol�feros Fiscales Bolivianos agreed on the sale of Bolivian
natural gas having established an initial price of US$ 5 per million of BTU with
a maximum daily volume of 7.7 million cubic meters up to a maximum daily volume
of 27.7 million cubic meters in year 2010. This contract provides for an
extension of one year. The volume proposed for 2010/2011 will be obtained once
the gas pipeline named Noreste starts operating and/or through the availability
of gas by Bolivia.

Pursuant to Resolution 776 issued by the Argentine Ministry of Economy on
October 11, 2006, the national government provided for the retroactive
application of export tariffs on exports of hydrocarbons made from the Special
Customs Area of the Province of Tierra del Fuego. On January 15, 2007, Law 26217
was passed which, besides extending for a five-year term the application of
export tariffs on the export of hydrocarbons in general, imposes that such
export tariffs be applied on the exports made from the referred Special Customs
Area. The oil companies operating in this province consider that pursuant to the
provisions of Law Nr. 19640 that establishes a special regime applicable to
economic activities in Tierra del Fuego, as well as other regulations provide,
including those that approved the concessions or other rights over the oil
areas, the application of export tariffs on future exports becomes a
challengeable issue and that the retroactive application of export tariffs
becomes absolutely invalid and therefore these companies have commenced all
actions before administrative authorities and the courts.

During the first six-month period of 2007, union claims for a salary increase to
be enjoyed by the personnel (both from the Private Oil Workers Union and
Hierarchy employees union exceeding 60%) were peacefully made by the unions to
the business chambers. As a result, no action measures affecting operations were
taken. Nonetheless, in July, the unions took direct action measures which
affected the normal functioning of tower equipment for several days and caused
some minor production interruptions in the oil fields, however, they caused
operating problems generating long-lasting effects on the production volume.
Towards the end of July, several agreements were reached for a one-year term
with the unions. The agreements provide for a gradual salary increase of
approximately 30%.

In the third quarter of 2007, different salary claims started to be made by the
other unions involved in the oil fields (construction, surveillance, etc.),
which asked for salary increases similar to those obtained by the oil laborers
unions. Additionally, the oil unions are requesting for private oil company
workers involved in the sector of special operations (cementing, logging,
casing, etc.) a change in the working conditions, which the chamber of companies
is currently considering.

During fiscal year 2007, the Branch has continued with its investment plans with
a view to expanding its business and contributing to satisfying the growing
energy demand. The commitments assumed referred to in the following paragraphs
strengthen these expansion plans.

On December 6, 2006, Law Nr. 26197, known as "Hydrocarbons Short Law", was
passed. This law complied with the constitutional provision of transferring the
original ownership of the natural resources placed in the subsurface from the
Federal State to the producing provinces where oil fields are located.

Consequently, the Branch entered into with the Argentine provinces of Chubut
(04/27/2007) and Santa Cruz (06/25/2007) two investment commitments and
agreements for the extension of the term of the concession for hydrocarbon
exploitation for a ten-year period in the blocks known as Cerro Drag�n, the area
of which is extended in the territory of both provinces, and Piedra Clavada and
Koluel Kaike in the province of Santa Cruz. The agreements expired between 2016
and 2017.

These agreements provided for minimum investments of US$ 2,000,000,000 in the
Province of Chubut and of US$ 500,000,000 in the Province of Santa Cruz. These
investments are to be made before 2017 and are destined to onshore activities.
Other investments of US$ 1,000,000,000 in the Province of Chubut and of US$
300,000,000 in the Province of Santa Cruz are to be made before 2027.

The agreements also provided for a US$ 80,000,000 investment commitment for sea
exploration, at the Branch's own risk, by means of two joint ventures (UTEs)
with the state-run companies Petrominera (in the case of Chubut) and Fomicruz
(in the case of Santa Cruz). If the Branch makes commercial discoveries, an
additional investment commitment will be required in the amount of US$
500,000,000 for the development of the offshore fields to be discovered.

The creation of the UTEs referred to in the preceding paragraph is consistent
with the provisions of sections 11 and 95 of the Hydrocarbon Law, which allows
state-run companies to enter into agreements and create companies, partnerships
or other associations with individuals or entities for the development of their
activities.

The operation agreements executed with state-run companies also fall within the
scope of the referred Law, which shall be effected as from the year 2027,
subject to compliance with the investments and Pan American Energy's exploration
success, so that it is allowed to evidence that it has developed sufficient
reserves to continue with the production of the fields of those areas as from
that year.

Other commitments assumed by the Branch are as follows:

    --  make a special contribution of 3% of the net revenues generated by the
        concessions to the provinces of Chubut and Santa Cruz ;

    --  in the field of Corporate Social Responsibility, extend its considerable
        commitments on education and development of regional small and
        medium-sized companies by means of a number of university scholarship
        programs in the country and abroad and a significant extension of its
        development programs for domestic companies; and

    --  make a contribution of US$ 120,000,000 and US$ 40,000,000 for the
        creation of different funds in the provinces of Chubut and Santa Cruz,
        respectively, destined to domestic development and payable in four
        annual, equal and consecutive installments. These amounts will be added
        to commitment assumed by the Branch in the field of Corporate Social
        Responsibility and are considered expenses for the fiscal year in which
        payments are effectively made.

The agreement with the province of Chubut was ratified by provincial law No.
5616 passed by the Provincial Legislature on May 24, 2007, enacted by decree No.
500/2007 and published in the Official Bulletin on May 28, 2007.

The Government of the Province of Santa Cruz has sent the agreement to the
Provincial Legislature for its approval, which is pending.

The execution of these agreements involves a new horizon to sustain the increase
in production and reserves maintained by Pan American Energy in the Golfo San
Jorge basin. This new horizon shall allow addressing long-term projects
requiring sound investments, new technologies and teams working for the future.

On October 28, 2007, the presidential, and other governmental authorities
elections took place in the country. Thus, the elections schedule that started
several months ago in different provinces of the country was completed. These
elections proved to be a new milestone in the history of the country's democracy
and support the democratic and institutional regularization process that started
24 years ago. The new administration is expected to continue, in general lines,
with the current policies on hydrocarbon exploitation and production.

Buenos Aires, November 9, 2007

Daniel Grinstein
Attorney in-fact

SUPPLEMENTARY INFORMATION TO THE FINANCIAL STATEMENTS AS OF SEPTEMBER 30, 2007
REQUIRED BY SECTION 68 OF THE REGULATIONS OF THE BUENOS AIRES STOCK EXCHANGE

Overall issues about the Branch's activity:

1. Specific and significant legal requirements which imply contingent
suspensions or changes of benefits provided for by such regulations:

The Branch is not subject to specific and significant legal requirements, which
may imply the contingent suspension or change of benefits provided for by such
regulations, except as disclosed in notes to the financial statements.

2. Significant changes in the Branch's activities or other similar circumstances
that affect the comparison of the financial statements with prior years', or
with those to be presented in future years.

There are no changes in the Branch's activities that significantly affect the
comparison of the financial statements as of September 30, 2007.

3. Breakdown of receivables and payables as per section 68, subsection 3.

3.a) The breakdown of receivables and payables based on the maturity thereof is
disclosed in Exhibit H to the financial statements.

The following receivables without any established term included in the referred
Exhibit H are overdue:

                                                                Current receivables
                                                                         $
                                                                -------------------

Due from April to September 2007                                            673,459
Due from January to March 2007                                            5,095,214
Due from October to December 2006                                         4,138,925
Due from July to September 2006                                           3,339,101
Due from October 2005 to September 2006                                  11,215,023
Due from October 2004 to September 2005                                   8,498,472
Due from October 2003 to September 2004                                   2,832,876
Due from October 2002 to September 2003                                   1,445,798
Due from October 2001 to September 2002                                      52,196
Due from October 2000 to September 2001                                     147,496
                                                                -------------------

        Total                                                            37,438,560
                                                                ===================

There are no overdue payables.

3.b) In connection with the receivables and payables in foreign currency, see
Exhibit F to the financial statements. There are no significant receivables and
payables represented by securities.

3.c) There are no receivables and payables subject to adjustment clauses.

3.d) In connection with the receivables and payables that accrue interest as of
September 30, 2007, see Exhibit H to the financial statements.

4. Corporations Art. 33 Law 19550

None.

5. Receivables or loans with directors, statutory auditors, and relatives
including up to the second degree:

None as of the date of issuance of these financial statements.

6. Physical counts of inventories

Based on the nature of the activity, the Branch carries out physical counts of
most of its inventories. There are no significant slow-moving inventories as of
September 30, 2007 for which an allowance has not been set up.

7. Current values

The valuation method of inventories is disclosed in Note 3.2.d) to the financial
statements.

8. Property, plant and equipment

No items of property, plant and equipment have been subject to appraisal.

To date, there are no property, plant and equipment items that are not in use
due to obsolescence.

9. Interests in other companies

None. The Branch's participating interests in joint operations and other
entities are disclosed in Note 2 to the financial statements.

10. Recoverable value

The recoverable value of inventories and fixed assets, used as a limit to their
valuation for financial reporting purposes, have been determined based on the
net realizable values and values in use, the latter defined as the expected net
cash flows that would result from both the use of the assets and the disposal
thereof at the end of their useful life.

11. Insurance

As of September 30, 2007 the insurance taken onthe Branch's assets are as follows:

                                                                                Covered
                Insured assets                         Insured risk              amount
----------------------------------------------- --------------------------- ----------------
                                                                              Thousand US$

Equipment, facilities and pipelines applied to
 exploitation and transportation                      Physical damage           702,815

Equipment, facilities and pipelines applied to
 exploitation and transportation                    Liability insurance          10,000

Wells                                           Control, re-drilling, spill      39,000


Additionally, the Branch has taken the following policies: workers compensation insurance,
 directors and officers liability insurance and automobile liability insurance.

12. Negative and positive contingencies

To calculate the related accruals, all available elements of judgment and
probability of occurrence have been considered (see Notes 10, 13 and Exhibit D
to the basic financial statements).

13. Contingent events as of the date of issuance of the financial statements
with moderate probability of occurrence, the financial effects of which have not
been fully recorded as of September 30, 2007

None.

Irrevocable advances for future subscriptions

14. As of September 30, 2007, there are no irrevocable advances for future
subscriptions.

15. There are no preferred shares as of the date of issuance of these financial
statements.

16. As of the date of issuance of these financial statements, the Branch has no
restrictions on the distributions of earnings, except as indicated in Note 10.

Buenos Aires, November 9, 2007

Daniel Grinstein
Attorney in-fact


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