Part I The Security Issued Company

1.  General Information

1.1 PTTEP’s Information

Company Name PTT Exploration and Production Public Company Limited or
PTTEP

  Head Office 555/1 Energy Complex Building A, 6^(th) & 19^(th) –
  36^(th) floor, Vibhavadi Rangsit Road, Kwaeng Chatuchak, Khet
  Chatuchak, Bangkok 10900, Thailand

  Type of Business Petroleum exploration and production, and investment
  in related business

  Registration Number 0107535000206 (Former Registration No. is Bor Mor
  Jor. 53)

  Telephone 66 (0) 2537-4000

  Facsimile 66 (0) 2537-4444

  Website www.pttep.com

  Email corporatec@pttep.com

  Registered Capital 3,322,000,000 Baht, dividing into 3,322,000,000
  ordinary shares, at 1 Baht per share

  Paid-up Capital 3,312,560,700 Baht, dividing into 3,312,560,700
  ordinary shares, at 1 Baht per share (as of 31 December 2009)

1.2 Subsidiary’s Information

Currently, PTTEP has 42 subsidiaries. All subsidiaries have the same
head office, telephone and facsimile as PTTEP. Details of the directors
of each subsidiary appear in attachment 2.

+---+--------------+----+------------+------+---------------+----------+
| N | Company Name | Ab | Major      | Pai  | Issued and    | Shar     |
| o |              | br | Business   | d-up | Paid-up       | eholders |
| . |              | ev |            | Cap  | Shares        |          |
|   |              | ia |            | ital |               |          |
|   |              | ti |            |      |               |          |
|   |              | on |            |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 1 | PTTEP        | PT | Petroleum  | 20   | 2,000 Million | PTTEP    |
|   | I            | TE | E          | ,000 | Ordinary      | 100%     |
|   | nternational | PI | xploration | Mil  | Shares at 10  |          |
|   | Limited      |    | and        | lion | Baht per      |          |
|   |              |    | Production | Baht | Share         |          |
+---+--------------+----+------------+------+---------------+----------+
| 2 | PTTEP        | PT | Petroleum  | 100  | 10 Million    | PTTEPI   |
|   | (Thailand)   | TE | E          | Mil  | Ordinary      | 100%     |
|   | Limited      | PT | xploration | lion | Shares        |          |
|   |              |    | and        | Baht |               |          |
|   |              |    | Production |      | at 10 Baht    |          |
|   |              |    |            |      | per Share     |          |
+---+--------------+----+------------+------+---------------+----------+
| 3 | PTTEP        | P  | Personnel  | 1    | 100,000       | PTTEP    |
|   | Services     | TT | Service    | Mil  | Ordinary      | 25%      |
|   | Limited      | EP | Support    | lion | Shares at 10  |          |
|   |              | Se |            | Baht | Baht per      | PTTEPI   |
|   |              | rv |            |      | Share         | 75%      |
|   |              | ic |            |      |               |          |
|   |              | es |            |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 4 | PTTEP Siam   | PT | Petroleum  | 100  | 1 Million     | PTTEP    |
|   | Limited      | TE | E          | Mil  | Shares        | 51%      |
|   |              | PS | xploration | lion |               |          |
|   |              |    | and        | Baht | at 100 Baht   | PTTEPO   |
|   |              |    | Production |      | per Share     | 49%      |
+---+--------------+----+------------+------+---------------+----------+
| 5 | PTTEP Thai   | P  | Petroleum  | 1    | 100,000       | PTTEPT   |
|   | Projects     | TT | E          | Mil  | Ordinary      | 100%     |
|   | Company      | EP | xploration | lion | Shares at 10  |          |
|   | Limited      | TP | and        | Baht | Baht per      |          |
|   |              |    | Production |      | Share         |          |
+---+--------------+----+------------+------+---------------+----------+
| 6 | PTTEP        | PT | Petroleum  | 0.25 | 100,000       | PTTEPS   |
|   | Andaman      | TE | E          | Mil  | Ordinary      | 100%     |
|   | Company      | PA | xploration | lion | Shares at 2.5 |          |
|   | Limited      |    | and        | Baht | Baht per      |          |
|   |              |    | Production |      | Share         |          |
+---+--------------+----+------------+------+---------------+----------+
| 7 | PTTEP        | PT | Petroleum  | US$  | 6,667         | PTTEP    |
|   | Offshore     | TE | E          | 6    | Ordinary      | 75%      |
|   | Investment   | PO | xploration | ,667 | Shares at US$ |          |
|   | Company      |    | and        |      | 1 per Share   | PTTEPI   |
|   | Limited      |    | Production |      |               | 25%      |
+---+--------------+----+------------+------+---------------+----------+
| 8 | PTTEP        | P  | Petroleum  | US$  | 50,000        | PTTEPO   |
|   | Southwest    | TT | E          | 50   | Ordinary      | 100%     |
|   | Vietnam      | EP | xploration | ,000 | Shares at US$ |          |
|   | Company      | SV | and        |      | 1 per Share   |          |
|   | Limited      |    | Production |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 9 | PTTEP Kim    | P  | Petroleum  | US$  | 50,000        | PTTEPO   |
|   | Long Vietnam | TT | E          | 50   | Ordinary      | 100%     |
|   | Company      | EP | xploration | ,000 | Shares at US$ |          |
|   | Limited      | KV | and        |      | 1 per Share   |          |
|   |              |    | Production |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 1 | PTTEP        | P  | Petroleum  | US$  | 50,000        | PTTEPO   |
| 0 | Hoang-Long   | TT | E          | 50   | Ordinary      | 100%     |
|   | Company      | EP | xploration | ,000 | Shares at US$ |          |
|   | Limited      | HL | and        |      | 1 per Share   |          |
|   |              |    | Production |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 1 | PTTEP        | P  | Petroleum  | US$  | 50,000        | PTTEPO   |
| 1 | Hoan-Vu      | TT | E          | 50   | Ordinary      | 100%     |
|   | Company      | EP | xploration | ,000 | Shares at US$ |          |
|   | Limited      | HV | and        |      | 1 per Share   |          |
|   |              |    | Production |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 1 | PTTEP Oman   | P  | Petroleum  | US$  | 50,000        | PTTEPO   |
| 2 | Company      | TT | E          | 50   | Ordinary      | 100%     |
|   | Limited      | EP | xploration | ,000 | Shares at US$ |          |
|   |              | OM | and        |      | 1 per Share   |          |
|   |              |    | Production |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 1 | PTTEP        | P  | Petroleum  | US$  | 50,000        | PTTEPO   |
| 3 | Algeria      | TT | E          | 50   | Ordinary      | 100%     |
|   | Company      | EP | xploration | ,000 | Shares at US$ |          |
|   | Limited      | AG | and        |      | 1 per Share   |          |
|   |              |    | Production |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 1 | PTTEP        | PT | Petroleum  | US$  | 50,000        | PTTEPO   |
| 4 | Merangin     | TE | E          | 50   | Ordinary      | 100%     |
|   | Company      | PM | xploration | ,000 | Shares at US$ |          |
|   | Limited      |    | and        |      | 1 per Share   |          |
|   |              |    | Production |      |               |          |
+---+--------------+----+------------+------+---------------+----------+

+---+--------------+----+------------+------+---------------+----------+
| N | Company Name | Ab | Major      | Pai  | Issued and    | Shar     |
| o |              | br | Business   | d-up | Paid-up       | eholders |
| . |              | ev |            | Cap  | Shares        |          |
|   |              | ia |            | ital |               |          |
|   |              | ti |            |      |               |          |
|   |              | on |            |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 1 | PTTEP Iran   | P  | Petroleum  | US$  | 50,000        | PTTEP OM |
| 5 | Company      | TT | E          | 50   | Ordinary      | 100%     |
|   | Limited      | EP | xploration | ,000 | Shares at US$ |          |
|   |              | IR | and        |      | 1 per Share   |          |
|   |              |    | Production |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 1 | PTTEP        | P  | Petroleum  | US$  | 50,000        | PTTEP OM |
| 6 | Bahrain      | TT | E          | 50   | Ordinary      | 100%     |
|   | Company      | EP | xploration | ,000 | Shares at US$ |          |
|   | Limited      | BH | and        |      | 1 per Share   |          |
|   |              |    | Production |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 1 | PTTEP        | PT | Petroleum  | US$  | 50,000        | PTTEPO   |
| 7 | Holding      | TE | E          | 50   | Ordinary      | 100%     |
|   | Company      | PH | xploration | ,000 | Shares at US$ |          |
|   | Limited      |    | and        |      | 1 per Share   |          |
|   |              |    | Production |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 1 | PTTEP        | P  | Petroleum  | US$  | 50,000        | PTTEPH   |
| 8 | Indonesia    | TT | E          | 50   | Ordinary      | 100%     |
|   | Company      | EP | xploration | ,000 | Shares at US$ |          |
|   | Limited      | ID | and        |      | 1 per Share   |          |
|   |              |    | Production |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 1 | PTTEP        | PT | Petroleum  | US$  | 50,000        | PTTEP ID |
| 9 | Bengara I    | TE | E          | 50   | Ordinary      | 100%     |
|   | Company      | PB | xploration | ,000 | Shares at US$ |          |
|   | Limited      |    | and        |      | 1 per Share   |          |
|   |              |    | Production |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 2 | PTTEP Semai  | P  | Petroleum  | US$  | 50,000        | PTTEP ID |
| 0 | II Limited   | TT | E          | 50   | Ordinary      | 100%     |
|   |              | EP | xploration | ,000 | Shares at US$ |          |
|   |              | SM | and        |      | 1 per Share   |          |
|   |              |    | Production |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 2 | PTTEP Egypt  | P  | Petroleum  | US$  | 50,000        | PTTEPH   |
| 1 | Company      | TT | E          | 50   | Ordinary      | 100%     |
|   | Limited      | EP | xploration | ,000 | Shares at US$ |          |
|   |              | EG | and        |      | 1 per Share   |          |
|   |              |    | Production |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 2 | PTTEP        | PT | Petroleum  | US$  | 50,000        | PTTEP EG |
| 2 | Rommana      | TE | E          | 50   | Ordinary      | 100%     |
|   | Company      | PR | xploration | ,000 | Shares at US$ |          |
|   | Limited      |    | and        |      | 1 per Share   |          |
|   |              |    | Production |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 2 | PTTEP Sidi   | P  | Petroleum  | US$  | 50,000        | PTTEP EG |
| 3 | Abd El       | TT | E          | 50   | Ordinary      | 100%     |
|   | Rahman       | EP | xploration | ,000 | Shares at US$ |          |
|   | Company      | SA | and        |      | 1 per Share   |          |
|   | Limited      | ER | Production |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 2 | PTTEP        | P  | Petroleum  | US$  | 50,000        | PTTEPH   |
| 4 | Bangladesh   | TT | E          | 50   | Ordinary      | 100%     |
|   | Limited      | EP | xploration | ,000 | Shares at US$ |          |
|   |              | BD | and        |      | 1 per Share   |          |
|   |              |    | Production |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 2 | PTTEP        | P  | Petroleum  | US$  | 50,000        | PTTEPH   |
| 5 | Myanmar      | TT | E          | 50   | Ordinary      | 100%     |
|   | Limited¹     | EP | xploration | ,000 | Shares at US$ |          |
|   |              | M  | and        |      | 1 per Share   |          |
|   |              | YA | Production |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 2 | PTTEP New    | P  | Petroleum  | US$  | 50,000        | PTTEPH   |
| 6 | Zealand      | TT | E          | 50   | Ordinary      | 100%     |
|   | Limited      | EP | xploration | ,000 | Shares at US$ |          |
|   |              | NZ | and        |      | 1 per Share   |          |
|   |              |    | Production |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 2 | PTTEP West   | P  | Petroleum  | US$  | 50,000        | PTTEPH   |
| 7 | Africa       | TT | E          | 50   | Ordinary      | 100%     |
|   | Company      | EP | xploration | ,000 | Shares at US$ |          |
|   | Limited²     | WA | and        |      | 1 per Share   |          |
|   |              |    | Production |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 2 | Andaman      | A  | Investment | US$  | 50,000        | PTTEPO   |
| 8 | Tr           | TL | in Gas     | 50   | Ordinary      | 100%     |
|   | ansportation |    | Pipeline   | ,000 | Shares at US$ |          |
|   | Limited ³    |    | for        |      | 1 per Share   |          |
|   |              |    | Myanmar    |      |               |          |
|   |              |    | Project    |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 2 | PTTEP        | P  | Investment | US$  | 50,000        | PTTEPH   |
| 9 | Southwest    | TT | in Gas     | 50   | Ordinary      | 100%     |
|   | Vietnam      | EP | Pipeline   | ,000 | Shares at US$ |          |
|   | Pipeline     | SV | for        |      | 1 per Share   |          |
|   | Company      | PC | Vietnam    |      |               |          |
|   | Limited⁴     |    | Project    |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 3 | Orange       | Or | Petroleum  | 100  | 1,000,000     | PTTEPO   |
| 0 | Energy       | an | E          | Mil  | Ordinary      | 53.9496% |
|   | Limited      | ge | xploration | lion | Shares at 100 |          |
|   |              |    | and        | Baht | Baht per      | MOECOI   |
|   |              |    | Production |      | Share         | 36.0504% |
|   |              |    |            |      |               |          |
|   |              |    |            |      |               | PSI 10%  |
+---+--------------+----+------------+------+---------------+----------+
| 3 | PTTEP        | P  | Petroleum  | AU$  | 50,000        | PTTEPH   |
| 1 | Australia    | TT | E          | 50   | Ordinary      | 100%     |
|   | Pty Ltd      | EP | xploration | ,000 | Shares at AU$ |          |
|   |              | AU | and        |      | 1 per Share   |          |
|   |              |    | Production |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 3 | PTTEP        | P  | Petroleum  | AU$  | 50,000        | PTTEP AU |
| 2 | Australia    | TT | E          | 50   | Ordinary      | 100%     |
|   | Offshore Pty | EP | xploration | ,000 | Shares at AU$ |          |
|   | Ltd          | AO | and        |      | 1 per Share   |          |
|   |              |    | Production |      |               |          |
+---+--------------+----+------------+------+---------------+----------+
| 3 | PTTEP        | P  | Petroleum  | AU$  | 50,000        | PTTEPH   |
| 3 | Australia    | TT | E          | 50   | Ordinary      | 100%     |
|   | Perth Pty    | EP | xploration | ,000 | Shares at AU$ |          |
|   | Ltd          | AP | and        |      | 1 per Share   |          |
|   |              |    | Production |      |               |          |
+---+--------------+----+------------+------+---------------+----------+

  ----- --------------- -------------- ------------- ------------------- --------------- --------------
  No.   Company Name    Abbreviation   Major         Paid-up Capital     Issued and      Shareholders
                                       Business                          Paid-up Shares  

  34    PTTEP Australia PTTEP AB       Petroleum     AU$ 50,000          50,000 Ordinary PTTEP AP 100%
        Browse Basin                   Exploration                       Shares at AU$ 1 
        Pty Ltd                        and                               per Share       
                                       Production                                        

  35    PTTEP           PTTEP AA       Petroleum     AU$233,772,000      409,895,440     PTTEP AB 100%
        Australasia Pty                Exploration                       Ordinary Shares 
        Ltd                            and                               at various      
                                       Production                        issue prices    

                                                     US$10,000,000       40,000,000      
                                                                         Preference      
                                                                         Shares at       
                                                                         US$0.25 per     
                                                                         Share           

                                                     AU$378,000          1,575,000 B     
                                                                         Shares⁵ at      
                                                                         AU$0.24 per     
                                                                         Share           

  36    PTTEP           PTTEP AAF      Petroleum     AU$1.00             1 Ordinary      PTTEP AA 100%
        Australasia                    Exploration                       Share at AU$1   
        (Finance) Pty                  and                               per Share       
        Ltd                            Production                                        

  37    PTTEP           PTTEP AAP      Petroleum     AU$10.00            10 Ordinary     PTTEP AA 100%
        Australasia                    Exploration                       Shares at AU$1  
        (Petroleum) Pty                and                               per Share       
        Ltd                            Production                                        

  38    PTTEP           PTTEP AAT      Petroleum     AU$1.00             1 Ordinary      PTTEP AAF 100%
        Australasia                    Exploration                       Share at AU$1   
        (Tullian) Pty                  and                               per Share       
        Ltd                            Production                                        

  39    PTTEP           PTTEP AAO      Petroleum     AU$21,337,303.40    106,686,517     PTTEP AAF 100%
        Australasia                    Exploration                       Ordinary Shares 
        (Operations)                   and                               at AU$0.20 per  
        Pty Ltd                        Production                        Share           

  40    PTTEP           PTTEP AAA      Petroleum     AU$3,400,000        1,700,000       PTTEP AAO 100%
        Australasia                    Exploration                       Ordinary Shares 
        (Ashmore                       and                               at AU$2 per     
        Cartier) Pty                   Production                        Share           
        Ltd                                                                              

  41    PTTEP           PTTEP AAS      Petroleum     AU$10               10 Ordinary     PTTEP AAO 100%
        Australasia                    Exploration                       Shares at AU$1  
        (Staffs) Pty                   and                               per Share       
        Ltd                            Production                                        

  42    PTTEP Australia PTTEP AT       Petroleum     AU$128,118,091.53   50 Ordinary     PTTEP AB 100%
        Timor Sea Pty                  Exploration                       Shares          
        Ltd⁶                           and                                               
                                       Production                                        
  ----- --------------- -------------- ------------- ------------------- --------------- --------------

  ¹ As of 31 December 2009, a total of US$44,774.22 worth of stock
  receivables was outstanding.

  ²         Set up on 30 March 2009, and as of 31 December 2009, a total
  of US$45,875 worth of stock receivables was outstanding.

  ³        Set up on 9 January 2009, and as of 31 December 2009, a total
  of US$45,900 worth of stock receivables was outstanding.

  ⁴    Set up on 14 January 2010, with US$50,000 worth of stock
  receivables outstanding.

  ⁵    A type of common stock issued to employees under the Employee
  Share Option Plan (ESOP).

  ⁶    PTTEP AB signed an agreement purchasing all the stocks of OMV
  Timor Sea Pty Ltd, later renamed as PTTEP Australia Timor Sea Pty Ltd.

1.3 Associated Company’s Information

Currently, PTTEP has 11 Associated Companies as follows: Details of the
directors of each associated company appear in attachment 2.

[TABLE]

[TABLE]

[TABLE]

[TABLE]

1.4 References

(1) Share Registrar

Name Thailand Securitires Depository Company Limited

  Address Capital Market Academy Building, 2^(nd) floor, 2/7 Moo 4
  (North Park Project), Vibhavadi-Rangsit Road, Thung Songhong, Laksi,
  Bangkok 10210, Thailand

Telephone 66 (0)-2596-9302-10

Facsimile 66 (0)-832-4994-8

(2) Debenture Registrar (Baht Debentures: Baht 2,500 million bonds
issued March 2003; Baht 3,500 million bonds issued February 2007; Baht
12,500

million bonds issued June 2007; and Baht 40,000 million Bonds issued May
2009)

  Name Thai Military Bank Public Company Limited

  Address 393 Silom Road, Bangrak, Bangkok 10500, Thailand

  Telephone 66 (0) 2230-5575, 66 (0) 2230-6061

  Facsimile 66 (0) 2266-8150, 66 (0) 2266-7213

  (3) Bondholder’s Representative (Baht 12,500 million bonds issued June
  2007)

  Name Kasikornbank Public Company Limited

  Address 1 Soi 27/1 Ratburana Road, Bangkok 10140, Thailand

  Telephone 66 (0) 2470-1986

  Facsimile 66 (0) 2470-3684

  (4) Bondholder’s Representative (Baht 40,000 million bonds issued May
  2009)

  Name Siam Commercial Bank Public Company Limited

  Location 10th Floor Zone A 9 Rutchadapisek Road, Chatuchak, Bangkok
  10900, Thailand

  Telephone 66 (0) 2256-2316

  Facsimile 66 (0) 2256-2401-4

(5) Swap Counter Party (Baht 2,500 million bonds issued March 2003)

  Name Kasikornbank Public Company Limited

Location 1 Soi 27/1 Ratburana Road, Bangkok 10140, Thailand

  Telephone 66 (0) 2470-2020

Facsimile 66 (0) 2470-2359

(6) Swap Counter Party (Baht 6,000 million bonds issued June 2007)

  Name Barclays Capital Securities (Thailand) Ltd.

  Location 21^(st) Floor CRC Tower All Seasons Place Wireless Road,
  Lumpini, Phatumwan, Bangkok 10330, Thailand

  Telephone 66 (0) 2686-1900, 66 (0) 2686-1990/1991 (Direct Line)

Facsimile 66 (0) 2686-1901

(7) Auditor

Name Office of the Auditor-General of Thailand

  Address Soi Areesumpun, Rama IV Road, Phayathai, Bangkok 10400,
  Thailand

  Telephone 66 (0) 2271-8150

  Facsimile 66 (0) 2618-5783

          

(8) Independent Director as Minority Shareholder’s Representative

E-mail IndependentDirector@pttep.com

(9) Legal Consultants

  Name Herbert Smith

Address 23^(rd) Floor Gloucester Tower, 15 Queen's Road Central, Hong
Kong

Telephone (852) 2845-6639

Facsimile (852) 2845-9099

  Name Minter Ellison Perth

Address Level 49, Central Park, 152-158 St George's Terrace, Perth,
Western Australia, 6000 Australia

Telephone (61) 8-9429-7444

Facsimile (61) 8-9429-7666

  Name Siam Premier International Law Office Limited

Address 26^(th) Floor, The Offices at Central World, 999/9 Rama 1 Road,
Pathumwan, Bangkok 10330, Thailand

Telephone 66 (0) 2646-1888

Facsimile 66 (0) 2646-1919

  (10) Advisors to the Board of Directors

  Name Mr. Tongchat Hongladarom

Address 8/48 Prasanmite Condominium, Sukhumvit 23, Klongteoy-nua,
Wattana, Bongkok 10110, Thailand

Telephone 66 (0) 2258-4363

Facsimile -

  Name Miss Sukon Kanchanalai

Address 188 Soi 16 South Tesbanimit Road, Prachanivej I, Chatuchak,
Bangkok 10900, Thailand

Telephone 66 (0) 2589-5566

Facsimile -