Attachment 3: Supplemental Information on Petroleum Exploration and
Production Activities under the US Financial Accounting Standard no. 69
(FAS 69) and other information - Unaudited

(A) PTTEP and its Subsidiaries’ Petroleum Reserves Report As of December
    31, 2009

  The total Proved Reserves of PTT Exploration and Production Public
  Company Limited (PTTEP) and its Subsidiaries as of December 31, 2009
  are shown in the attached table. The Proved Reserves are reviewed
  annually by company’s earth scientists and reservoir engineers to
  ensure rigorous professional standards. The Proved Reserves are
  reported on a gross basis, which includes the company’s net working
  interest and related host country’s interest.

  No reserve quantities have been recorded for the hydrocarbon
  discoveries in Vietnam Blocks B, Block 48/95 and Block 52/97 since no
  Gas Sale Agreement (GSA) has been established.

  The total Proved Reserves (Consolidated Companies) as of December 31,
  2009 of PTTEP and its Subsidiaries are 218 Million Stock Tank Barrels
  (MMSTB) for crude and condensate, and 5,649 Billion Standard Cubic
  Feet (BSCF) for gas. The total Proved Reserves (Consolidated
  Companies) in term of oil equivalent are 1,099 Million Barrels
  (MMBOE).

  The total production in 2009 (Consolidated Companies) is 95.8 MMBOE
  (26 MMSTB for crude and condensate, and 426 BSCF for gas) or the
  production rate of approximately 262,466 Barrels of Oil Equivalent per
  Day (BOED). The increase is approximately 14,766 BOED or 6% higher
  than that of last year. The production increase was mainly attributed
  to the new petroleum production from Arthit North project and the
  purchase of Australasia project.

[TABLE]

(1) The proved reserves are reported on a gross basis which includes the
    company's net working interest and the related host country
    interest.

(2) Included MTJDA-B17 Project

(B) Capitalized costs relating to oil and gas producing activities

  Capitalized costs represent cumulative expenditures for proved and
  unproved properties, and support equipment and facilities used in oil
  and gas exploration and production operations together with related
  accumulated depreciation, depletion, amortization and impairment.

  Proved properties include exploration & development wells, equipment,
  transportation pipeline and related producing facilities associated
  with proved reserves project. Unproved properties represent amounts
  associated with non-proved reserve project. Support equipment and
  facilities include warehouse, field offices, vehicles and movable
  assets used in oil and gas producing activities.

  The net capitalized costs represent the undepreciated value for these
  assets.

  -------------------------------------------- ------------- -------------
  (Unit: Million Baht)                         2009          2008

  Proved properties                            321,046       255,465

  Unproved properties                          7,703         10,195

  Accrued decommissioning costs                23,228        17,699

  Support equipment and facilities             3,655         3,307

  Gross capitalized costs                      355,632       286,666

  Accumulated depreciation, depletion,         (150,441)     (120,636)
  amortization and impairment                                

  Net capitalized costs                        205,191       166,030

                                                             
  -------------------------------------------- ------------- -------------

(C) Costs Incurred in oil and gas property acquisition, exploration, and
    development activities

  Costs incurred in oil and gas property acquisition, exploration and
  development activities represent amounts both capitalized and charged
  to expense during the year. Property acquisition costs include costs
  to purchase proved and unproved properties.

  Exploration costs include the costs of geological and geophysical
  work, carrying and retaining undeveloped properties, and drilling and
  equipping exploratory wells.

  Development costs include costs associated with drilling and equipping
  development wells, improved recovery systems, facilities for
  extraction, treating, gathering and storage, producing facilities for
  existing developed reserves, and costs associated with transportation
  pipeline.

+------------------------+------+------+------+------+------+------+
|                        | 2009 |      |      | 2008 |      |      |
+------------------------+------+------+------+------+------+------+
| (Unit: Million Baht)   | Dome | For  | T    | Dome | For  | T    |
|                        | stic | eign | otal | stic | eign | otal |
+------------------------+------+------+------+------+------+------+
| Acquisition of         |      |      |      |      |      |      |
| properties             |      |      |      |      |      |      |
+------------------------+------+------+------+------+------+------+
| - Proved               | -    | 1    | 1    | 2    | (10) | (8)  |
|                        |      | ,567 | ,567 |      |      |      |
+------------------------+------+------+------+------+------+------+
| - Unproved             | -    | 213  | 213  | (3)  | 558  | 555  |
+------------------------+------+------+------+------+------+------+
| Exploration costs ⁽¹⁾  | 3    | 3    | 7    | 3    |   9  | 13   |
|                        | ,082 | ,974 | ,056 | ,873 | ,958 | ,831 |
+------------------------+------+------+------+------+------+------+
| Development costs      | 31   | 30   | 62   | 32   | 3    | 36   |
|                        | ,899 | ,461 | ,360 | ,502 | ,790 | ,292 |
+------------------------+------+------+------+------+------+------+
| Total                  | 34   | 36   | 71   | 36   | 14   | 50   |
|                        | ,981 | ,215 | ,196 | ,374 | ,296 | ,670 |
+------------------------+------+------+------+------+------+------+
|                        |      |      |      |      |      |      |
+------------------------+------+------+------+------+------+------+

(1) Exploration costs include transferring of exploration well costs to
    development well costs for future production.

(D) Results of operations for producing activities

  Results of operations from oil and gas producing activities for the
  year 2009 and 2008 are shown in the following table.

  Operating costs include lifting costs incurred to operate and maintain
  productive wells and related equipment. Exploration expenses consist
  of geological and geophysical costs, and dry hole costs.

  General administrative expenses are expenses directly related to oil
  and gas producing activities.

  Depreciation, Depletion and Amortization expense relates to
  capitalized costs incurred in acquisition, exploration and development
  activities, transportation pipeline, including amortized
  decommissioning costs.

  Other income/expenses include pipeline transportation income and
  foreign exchange gains and losses.

  Income tax expenses are based on the results of operations from
  petroleum producing activities.

  General corporate overhead and finance costs are excluded from the
  results of operations for petroleum producing activities.

+-------------------------------+------+-----+------+-----+-----+-----+
|                               | 2009 |     |      | 2   |     |     |
|                               |      |     |      | 008 |     |     |
+===============================+======+=====+======+=====+=====+=====+
| (Unit: Million Baht)          | Dome | F   | T    | Do  | F   | To  |
|                               | stic | ore | otal | mes | ore | tal |
|                               |      | ign |      | tic | ign |     |
+-------------------------------+------+-----+------+-----+-----+-----+
| Gross revenues :              |      |     |      |     |     |     |
+-------------------------------+------+-----+------+-----+-----+-----+
|  Total Sales                  | 97   | 17, | 115  | 1   | 17, | 1   |
|                               | ,760 | 788 | ,548 | 15, | 298 | 32, |
|                               |      |     |      | 323 |     | 621 |
+-------------------------------+------+-----+------+-----+-----+-----+
| Expenses :                    |      |     |      |     |     |     |
+-------------------------------+------+-----+------+-----+-----+-----+
| Operating expenses            | 8    | 3,  | 11   | 7,  | 1,  | 8,  |
|                               | ,528 | 386 | ,914 | 332 | 352 | 684 |
+-------------------------------+------+-----+------+-----+-----+-----+
| Exploration expenses          | 463  | 6,  | 7    | 1,  | 7,  | 8,  |
|                               |      | 915 | ,378 | 018 | 255 | 273 |
+-------------------------------+------+-----+------+-----+-----+-----+
|   General administrative      | 2    | 1,  | 3    | 2,  | 979 | 3,  |
|   expenses                    | ,049 | 489 | ,538 | 088 |     | 067 |
+-------------------------------+------+-----+------+-----+-----+-----+
|   Petroleum royalties and     | 12   | 1,  | 14   | 15, | 1,  | 17, |
|   remuneration                | ,542 | 524 | ,066 | 685 | 643 | 328 |
+-------------------------------+------+-----+------+-----+-----+-----+
| Depreciation, depletion and   | 25   | 3,  | 29   | 20, | 2,  | 22, |
| amortization                  | ,770 | 765 | ,535 | 615 | 345 | 960 |
+-------------------------------+------+-----+------+-----+-----+-----+
| Loss from Montara Incident    | -    | 9,  | 9    | -   | -   | -   |
|                               |      | 086 | ,086 |     |     |     |
+-------------------------------+------+-----+------+-----+-----+-----+
| Oil price hedging loss        | -    | -   | -    | 904 | -   | 904 |
+-------------------------------+------+-----+------+-----+-----+-----+
| Other (income)/ expenses      | (1,  | (   | (4,  | 362 | (   | (   |
|                               | 208) | 2,9 | 207) |     | 3,9 | 3,6 |
|                               |      | 99) |      |     | 99) | 37) |
+-------------------------------+------+-----+------+-----+-----+-----+
| Total expenses                | 48   | 23, | 71   | 48, | 9,  | 57, |
|                               | ,144 | 166 | ,310 | 004 | 575 | 579 |
+-------------------------------+------+-----+------+-----+-----+-----+
|   Results before income taxes | 49   | (   | 44   | 67, | 7,  | 75, |
|                               | ,616 | 5,3 | ,239 | 319 | 723 | 042 |
|                               |      | 78) |      |     |     |     |
+-------------------------------+------+-----+------+-----+-----+-----+
| Income tax expenses (benefit) | 20   | (   | 19   | 29, | 3,  | 33, |
|                               | ,941 | 1,5 | ,419 | 347 | 813 | 160 |
|                               |      | 23) |      |     |     |     |
+-------------------------------+------+-----+------+-----+-----+-----+
| Net results of operations     | 28   | (   | 24   | 37, | 3,  | 41, |
|                               | ,675 | 3,8 | ,820 | 972 | 910 | 882 |
|                               |      | 55) |      |     |     |     |
+-------------------------------+------+-----+------+-----+-----+-----+
|                               |      |     |      |     |     |     |
+-------------------------------+------+-----+------+-----+-----+-----+

(E) Standardized Measure of Discounted Future Net Cash Flows Relating to
    Proved Oil and Gas Reserves

  The standardized measure of discounted future net cash flows, related
  to the above proved oil and gas reserves, is computed by applying
  year-end prices of oil and gas (with consideration of price changes
  only to the extent provided by contractual arrangements) to the
  estimated future production of year-end proved oil and gas reserves
  remaining less estimated future expenditures (based on year-end costs)
  to be incurred in developing and production the proved reserves,
  discounted using a rate of 10% per year to reflect the estimated
  timing of the future cash flows. Future income taxes are calculated by
  applying the appropriate year-end statutory tax rates to the future
  pre tax net cash flows and reduced by applicable tax deductions or tax
  credits.

  Discounted future cash flow estimates like those shown below are not
  intended to represent estimates of the fair value of oil and gas
  properties. Estimates of fair value should also consider probable and
  possible which may become proved reserves in the future, anticipated
  future oil and gas prices, interest rates, changes in development and
  production costs and risks associated with future production. Because
  of these and other considerations, any of fair value is necessarily
  subjective and imprecise.

+---------------------+-------+-------+-------+------+-------+-------+
| (Unit: Million      | Dom   |       | Fo    |      | Total |       |
| Baht)               | estic |       | reign |      |       |       |
+---------------------+-------+-------+-------+------+-------+-------+
|                     | 2009  | 2008  | 2009  | 2008 | 2009  | 2008  |
+---------------------+-------+-------+-------+------+-------+-------+
| Future cash inflows | 72    | 61    | 44    | 312  | 1,17  | 92    |
|                     | 9,545 | 4,117 | 3,003 | ,008 | 2,548 | 6,125 |
+---------------------+-------+-------+-------+------+-------+-------+
| Future production   | (109  | (107  | (91   | (40, | (201  | (148  |
| costs               | ,949) | ,586) | ,454) | 792) | ,403) | ,378) |
+---------------------+-------+-------+-------+------+-------+-------+
| Future development  | (153  | (200  | (109  | (29, | (263  | (230  |
| costs               | ,786) | ,758) | ,392) | 768) | ,178) | ,526) |
+---------------------+-------+-------+-------+------+-------+-------+
| Future income tax   | (121  | (84   | (64   | (85, | (186  | (169  |
| expenses            | ,797) | ,422) | ,984) | 085) | ,781) | ,507) |
+---------------------+-------+-------+-------+------+-------+-------+
| Future net cash     | 34    | 22    | 17    | 156  | 52    | 37    |
| flows               | 4,013 | 1,351 | 7,173 | ,363 | 1,186 | 7,714 |
+---------------------+-------+-------+-------+------+-------+-------+
| 10% annual discount | (116  | (81   | (103  | (77, | (220  | (158  |
|                     | ,813) | ,639) | ,666) | 065) | ,479) | ,704) |
+---------------------+-------+-------+-------+------+-------+-------+
| Standardized        |       |       |       |      |       |       |
| measure of          |       |       |       |      |       |       |
| discounted          |       |       |       |      |       |       |
+---------------------+-------+-------+-------+------+-------+-------+
| future net cash     | 22    | 13    | 7     | 79   | 30    | 21    |
| flows (SMDCF)       | 7,200 | 9,712 | 3,507 | ,298 | 0,707 | 9,010 |
+---------------------+-------+-------+-------+------+-------+-------+

Changes in Standardized Measure of Discounted Future Net Cash Flows
Relating to Proved Oil and Gas Reserves

  --------------------------------------------- ------------ ------------
  (Unit: Million Baht)                          2009         2008

  Present value at beginning of year            219,010      260,618

  Sales and transfers of oil and gas produced,  (88,855)     (109,984)
  net of production costs                                    

  Development costs incurred during the period  37,924       41,169

  Net changes in prices and production costs    63,755       (36,695)

  Net changes in development costs              21,609       (54,558)

  Extensions, discoveries and improved recovery 71,488       34,882

  Revisions of previous quantity estimates      27,899       17,977

  Purchases / sales of petroleum in place       22,032       -

  Accretions of discount                        (56,882)     19,855

  Net changes in income taxes                   (17,273)     45,746

  Present value at the year end                 300,707      219,010
  --------------------------------------------- ------------ ------------

(F) Other information

  Productive Oil and Gas Wells

  The numbers of productive wells at December 31, 2009 were as follows:

+---------------------------------+---------+-------+-------+-------+
|                                 | Oil     |       | Gas   |       |
+---------------------------------+---------+-------+-------+-------+
|                                 | Gross   | Net   | Gross | Net   |
+---------------------------------+---------+-------+-------+-------+
| Thailand                        | 665     | 274   | 785   | 278   |
+---------------------------------+---------+-------+-------+-------+
| Foreign                         |         |       |       |       |
+---------------------------------+---------+-------+-------+-------+
| Southeast Asia                  | 4       | 1     | 23    | 6     |
+---------------------------------+---------+-------+-------+-------+
| Australia                       | 4       | 4     | -     | -     |
+---------------------------------+---------+-------+-------+-------+
| Middle East and Others          | -       | -     | 6     | 6     |
+---------------------------------+---------+-------+-------+-------+
| Total                           | 673     | 279   | 814   | 290   |
+---------------------------------+---------+-------+-------+-------+

  Drilling in Progress

  The numbers of oil and gas wells in progress at December 31, 2009 were
  as follows:

+----------------------------------+------+-----------+---+-----------+
|                                  |      |   Gross   |   | Net       |
+----------------------------------+------+-----------+---+-----------+
| Exploratory                      |      |           |   |           |
+----------------------------------+------+-----------+---+-----------+
| Thailand                         |      |   -       |   | -         |
+----------------------------------+------+-----------+---+-----------+
| Foreign                          |      |           |   |           |
+----------------------------------+------+-----------+---+-----------+
| Southeast Asia                   |      |   -       |   | -         |
+----------------------------------+------+-----------+---+-----------+
| Australia                        |      |   -       |   | -         |
+----------------------------------+------+-----------+---+-----------+
| Middle East and Others           |      |   1       |   | 1         |
+----------------------------------+------+-----------+---+-----------+
| Total                            |      |   1       |   | 1         |
+----------------------------------+------+-----------+---+-----------+

  Development

+----------------------------------+------+-----------+---+-----------+
| Thailand                         |      | 39        |   |   10.2    |
+----------------------------------+------+-----------+---+-----------+
| Foreign                          |      |           |   |           |
+----------------------------------+------+-----------+---+-----------+
| Southeast Asia                   |      | 1         |   |   0.5     |
+----------------------------------+------+-----------+---+-----------+
| Australia                        |      | -         |   |   -       |
+----------------------------------+------+-----------+---+-----------+
| Middle East and Others           |      | -         |   |   -       |
+----------------------------------+------+-----------+---+-----------+
| Total                            |      | 40        |   |   10.7    |
+----------------------------------+------+-----------+---+-----------+

  Net Oil and Gas Wells Drilled Annually in 2009

+----------------------------------+------+-----------+---+-----------+
|                                  |      | Net       |   | Net dry   |
|                                  |      | P         |   |           |
|                                  |      | roductive |   | well      |
|                                  |      | wells     |   | drilled   |
|                                  |      | drilled   |   |           |
+----------------------------------+------+-----------+---+-----------+
| Exploratory                      |      |           |   |           |
+----------------------------------+------+-----------+---+-----------+
| Thailand                         |      | 13.1      |   | 1         |
+----------------------------------+------+-----------+---+-----------+
| Foreign                          |      |           |   |           |
+----------------------------------+------+-----------+---+-----------+
| Southeast Asia                   |      | 0.9       |   | -         |
+----------------------------------+------+-----------+---+-----------+
| Australia                        |      | 1.2       |   | 1         |
+----------------------------------+------+-----------+---+-----------+
| Middle East and Others           |      | 1.3       |   | 1         |
+----------------------------------+------+-----------+---+-----------+
| Total                            |      | 16.5      |   | 3         |
+----------------------------------+------+-----------+---+-----------+

Development

+----------------------------------+------+-----------+---+-----------+
| Thailand                         |      | 119.5     |   | 0.3       |
+----------------------------------+------+-----------+---+-----------+
| Foreign                          |      |           |   |           |
+----------------------------------+------+-----------+---+-----------+
| Southeast Asia                   |      | 17.5      |   | 0.3       |
+----------------------------------+------+-----------+---+-----------+
| Australia                        |      | -         |   | -         |
+----------------------------------+------+-----------+---+-----------+
| Middle East and Others           |      | -         |   | -         |
+----------------------------------+------+-----------+---+-----------+
| Total                            |      | 137       |   | 0.6       |
+----------------------------------+------+-----------+---+-----------+

  Gross wells include the total number of wells in which the company has
  an interest.

  Net wells are the sum of the company’s fractional interests in gross
  wells

Quarterly Information in 2009 and 2008 (unaudited) for the consolidated
financial statement are as follows:

  --------------------------- -- -------- -- -------- -- -------- -- --------
  (Unit: Million Baht)                                               

  Year 2009                      4thQ        3rdQ        2ndQ        1stQ

  Revenues                                                           

  Sales                          33,441      29,548      27,391      25,167

  Revenue from pipeline          738         998         1,176       851
  transportation                                                     

  Other revenues                                                     

  Gain on foreign exchange       275         -           -           -

  Interest income                74          89          74          138

  Other revenues                 76          134         76          366

  Total revenues                 34,605      30,769      28,717      26,522

  Expenses                                                           

  Operating expenses             4,530       2,324       3,050       2,023

  Exploration expenses           2,765       1,618       1,051       1,944

  General administrative         1,643       1,088       1,034       1,297
  expenses                                                           

  Petroleum royalties and        3,825       3,877       3,327       3,036
  remuneration                                                       

  Depreciation, depletion and    8,201       7,963       7,197       6,494
  amortization                                                       

  Other expenses                                                     

  Loss on foreign exchange       -           351         27          405

  Loss from Montara Incident     3,912       5,174       -           -

  Management’s remuneration      48          25          27          56

  Total expenses                 24,924      22,420      15,713      15,255

  Share of loss (profit) from    23          (13)        1           7
  investments in associates                                          

  Income before finance cost     9,658       8,362       13,003      11,260
  and income taxes                                                   

  Finance cost                   621         582         431         236

  Income taxes                   4,385       2,521       6,075       5,278

  Net income                     4,652       5,259       6,497       5,746

  Earnings per share (Baht)                                          

  Basic earnings per share       1.40        1.59        1.96        1.74

  Diluted earnings per share     1.40        1.59        1.96        1.74

                                                                     

  (Unit: Million Baht)                                               

  Year 2008                      4thQ        3rdQ        2ndQ        1stQ

  Revenues                                                           

  Sales                          28,746      40,657      36,931      26,287

  Revenue from pipeline          1,179       1,202       867         883
  transportation                                                     

  Other revenues                                                     

  Gain on foreign exchange       -           194         -           780

  Interest income                303         245         198         197

  Other revenues                 1,080       136         752         227

  Total revenues                 31,308      42,434      38,748      28,374

  Expenses                                                           

  Operating expenses             3,267       2,449       2,731       2,082

  Exploration expenses           3,590       2,974       751         959

  General administrative         1,503       952         1,069       967
  expenses                                                           

  Petroleum royalties and        3,399       5,635       4,839       3,455
  remuneration                                                       

  Depreciation, depletion and    6,337       6,383       5,962       4,604
  amortization                                                       

  Other expenses                                                     

  Loss on foreign exchange       244         -           612         -

  Oil price hedging loss         (9)         215         227         471
  (gain)                                                             

  Director’s remuneration        57          25          24          53

  Total expenses                 18,394      18,633      16,215      12,591

  Share of loss (profit) from    (5)         5           6           7
  investments in associates                                          

  Income before finance cost     12,919      23,796      22,527      15,776
  and income taxes                                                   

  Finance cost                   220         232         204         184

  Income taxes                   5,910       10,580      9,326       6,687

  Net income                     6,789       12,984      12,997      8,905

  Earnings per share (Baht)                                          

  Basic earnings per share       2.05        3.93        3.94        2.70

  Diluted earnings per share     2.05        3.92        3.93        2.69
  --------------------------- -- -------- -- -------- -- -------- -- --------

Five-year financial summary

[TABLE]

Five-year financial summary (continuous)

  -------------------------- -- ---------- -- ---------- -- ---------- -- ---------- -- ----------
  (Unit: Million Baht)                                                                  

                                2009          2008          2007          2006          2005

  Consolidated Balance                                                                  
  Sheets                                                                                

  Current Assets                78,784        66,952        44,255        34,965        42,551

  Non-current Assets            221,927       171,303       145,784       122,848       100,766

  Total Assets                  300,711       238,255       190,039       157,813       143,317

  Current Liabilities           56,196        49,450        34,456        38,784        36,527

  Non-current Liabilities       101,514       54,701        48,796        30,504        35,093

  Total Liabilities             157,710       104,151       83,252        69,288        71,620

  Shareholders’ Equity          143,001       134,104       106,787       88,525        71,697

  Total Liabilities and         300,711       238,255       190,039       157,813       143,317
  Shareholders’ Equity                                                                  

  Consolidated Statements of                                                            
  Cash Flows                                                                            

  Cash flows from operating     42,886        82,265        45,142        42,215        48,719
  activities                                                                            

  Cash flows from investing     (62,203)      (50,277)      (39,708)      (35,166)      (32,745)
  activities                                                                            

  Cash flows from financing     24,151        (12,235)      63            (18,691)      (9,258)
  activities                                                                            

  Net increase (decrease) in    4,834         19,753        5,496         (11,641)      6,716
  cash and cash equivalents                                                             

  Cash and cash equivalents     43,995        24,013        18,521        30,507        23,778
  as of the beginning date                                                              

                                48,829        43,766        24,017        18,866        30,494

  Effects of exchange           (151)         229           (4)           (345)         13
  differences                                                                           

  Cash and cash equivalents     48,678        43,995        24,013        18,521        30,507
  as of the closing date                                                                
  -------------------------- -- ---------- -- ---------- -- ---------- -- ---------- -- ----------

Five-year petroleum sales volume and unit price summary

[TABLE]