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  15. Reference Information

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15.1 Juristic Persons of which the Company’s Shareholding exceeded 10%

1) PTTEP International Limited or PTTEPI

  Location 555 PTTEP Office Building, Vibhavadi-Rangsit Rd., Bangkok

  10900 Thailand

  Tel. 66 (0) 2537-4000

  Fax 66 (0) 2537-4444

  Branch Office 2 Sei-Myaung Yeiktha Lane, 8 1/2 Mile, Mayangon
  Township, Yangon, Union of Myanmar

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

  Percent of Interest PTTEP holds 100 %

  Number of Issued Shares 2,000,000,000 ordinary shares, Baht 10 per
  share

  Number of Share Owned PTTEP holds 2,000,000,000 ordinary shares

2) PTTEP Offshore Investment Company Limited or PTTEPO
Location The Office of the Bank of Nova Scotia Trust Company

  (Cayman) Limited, P.O.Box 501, Second Floor, The Bank of Nova Scotia
  Building, Georgetown, Grand Cayman

Mailing Address 555 PTTEP Office Building, Vibhavadi-Rangsit Rd.,
Bangkok 10900 Thailand

Tel. 66 (0) 2537-4000

Fax 66 (0) 2537-4444

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

Percent of Interest PTTEP holds 75%

Number of Issued Shares 6,667 ordinary shares, USD 1 per share

Number of Shares Owned PTTEP holds 5,000 ordinary shares

3) PTTEP Kim Long Vietnam Company Limited or PTTEP KV

Location The Office of the Bank of Nova Scotia Trust Company (Cayman)
Limited, P.O.Box 501, Third Floor, The Bank of Nova Scotia Building,
Georgetown, Grand Cayman

Mailing Address 555 PTTEP Office Building, Vibhavadi-Rangsit Rd.,
Bangkok 10900 Thailand

Tel. 66 (0) 2537-4000

Fax 66 (0) 2537-4444

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

Percent of Interest PTTEPO holds 100%

Number of Issued Shares 50,000 ordinary shares, USD 1 per share

Number of Shares Owned PTTEPO holds 50,000 ordinary shares

4) PTTEP Southwest Vietnam Company Limited or PTTEP SV

Location The Office of the Bank of Nova Scotia Trust Company (Cayman)
Limited, P.O.Box 501, Third Floor, The Bank of Nova Scotia Building,
Georgetown, Grand Cayman

Mailing Address 555 PTTEP Office Building, Vibhavadi-Rangsit Rd.,
Bangkok 10900 Thailand

Tel. 66 (0) 2537-4000

Fax 66 (0) 2537-4444

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

Percent of Interest PTTEPO holds 100%

Number of Issued Shares 50,000 ordinary shares, USD 1 per share

Number of Shares Owned PTTEPO holds 50,000 ordinary shares

5) PTTEP Hoan-Vu Company Limited or PTTEP HV

Location The Office of the Bank of Nova Scotia Trust Company (Cayman)
Limited, P.O.Box 501, Third Floor, The Bank of Nova Scotia Building,
Georgetown, Grand Cayman

Mailing Address 555 PTTEP Office Building, Vibhavadi-Rangsit Rd.,
Bangkok 10900 Thailand

Tel. 66 (0) 2537-4000

Fax 66 (0) 2537-4444

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

Percent of Interest PTTEPO holds 100%

Number of Issued Shares 50,000 ordinary shares, USD 1 per share

Number of Shares Owned PTTEPO holds 50,000 ordinary shares

6) PTTEP Hoang-Long Company Limited or PTTEP HL

Location The Office of the Bank of Nova Scotia Trust Company (Cayman)
Limited, P.O.Box 501, Third Floor, The Bank of Nova Scotia Building,
Georgetown, Grand Cayman

Mailing Address 555 PTTEP Office Building, Vibhavadi-Rangsit Rd.,
Bangkok 10900 Thailand

Tel. 66 (0) 2537-4000

Fax 66 (0) 2537-4444

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

Percent of Interest PTTEPO holds 100%

Number of Issued Shares 50,000 ordinary shares, USD 1 per share

Number of Shares Owned PTTEPO holds 50,000 ordinary shares

7) PTTEP Middle East Company Limited or PTTEP ME

Location Room No. 13, Al Medinat Plaza, Bashair Street, Medinat Al
Sultan Qaboos, Muscat, P.O. Box 163, P.C. 133 Al Khuwair, Muscat Oman

Mailing Address 555 PTTEP Office Building, Vibhavadi-Rangsit Rd.,
Bangkok 10900 Thailand

Tel. 66 (0) 2537-4000

Fax 66 (0) 2537-4444

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

Percent of Interest PTTEPO holds 100%

Number of Issued Shares 50,000 ordinary shares, USD 1 per share

Number of Shares Owned PTTEPO holds 50,000 ordinary shares

8) PTTEP Algeria Company Limited

Location The Office of the Bank of Nova Scotia Trust Company (Cayman)
Limited, P.O.Box 501, Third Floor, The Bank of Nova Scotia Building,
Georgetown, Grand Cayman

Mailing Address 555 PTTEP Office Building, Vibhavadi-Rangsit Rd.,
Bangkok 10900 Thailand

Tel. 66 (0) 2537-4000

Fax 66 (0) 2537-4444

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

Percent of Interest PTTEPO holds 100%

Number of Issued Shares 50,000 ordinary shares, USD 1 per share

Number of Shares Owned PTTEPO holds 50,000 ordinary shares

9) PTTEP (Thailand) Limited or PTTEPT

Location 555 PTTEP Office Building, Vibhavadi-Rangsit Rd., Bangkok 10900
Thailand

Tel. 66 (0) 2537-4000

Fax 66 (0) 2537-4444

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

Percent of Interest PTTEPI holds 51% and PTTEP ME holds 49%

Number of Issued Shares 10,000,000 ordinary shares, Baht 10 per share

Number of Shares Owned PTTEPI holds 5,099,995 ordinary shares. PTTEP ME
4,900,000 owns ordinary shares

10) PTTEP Siam Limited or PTTEPS

Location 10 Soonthornkosa Road, Klong Toey, Bangkok 10110, Thailand

Tel. 66 (0) 2249-0483

Fax 66 (0) 2249-0489

Type of Business Petroleum Exploration and Production, investment in
petroleum business

Percent of Interest PTTEP holds 49% and PTTEPO holds 51%

Number of Issued Shares 1,000,000 ordinary shares, Baht 100 per share

Number of Shares Owned PTTEP holds 489,998 ordinary shares, PTTEPO holds
509,997 ordinary shares

11) PTTEP Services Limited or PTTEP Services

Location 555 PTTEP Office Building, Vibhavadi-Rangsit Rd., Bangkok 10900
Thailand

Tel. 66 (0) 2537-4000

Fax 66 (0) 2537-4444

Type of Business Provide advisory services for Petroleum Exploration and
Production business

Percent of Interest PTTEP holds 25% and PTTEPT holds 75%

Number of Issued Shares 100,000 ordinary shares, Baht 10 per share

Number of Shares Owned PTTEP holds 75,000 ordinary shares. PTTEPT 24,993
owns ordinary shares

12) Energy Complex Company Limited

Location 555 PTTEP Office Building, Vibhavadi-Rangsit Rd., Bangkok 10900
Thailand

Tel. 66 (0) 2537-4000

Fax 66 (0) 2537-4444

Type of Business Operate the construction of Energy Complex

Percent of Interest PTTEP holds 50 %

Number of Issued Shares 100,000 ordinary shares, Baht 10 per share

Number of Shares Owned PTTEP holds 50,000 ordinary shares

13) New Links Energy Resources Limited or New Links

Location 3rd Floor Cerne House, La Chausse, Port Louis, Republic of
Mauritius

Tel. (230) 212-0223

Fax (230) 208-8002

Type of Business Investment especially in petroleum business via its
subsidiaries

Percent of Interest PTTEPO holds 40%

Number of Issued Shares 1,000 ordinary shares, US$0.01 per share

Number of Shares Owned PTTEPO holds 400 ordinary shares

14) Moattama Gas Transportation Company or MGTC

Location C/O Clarendon House, Church Street, Hamilton HM CX, Bermuda

Mailing Address: No.5 Sacred Tooth Relic Lake Avenue, Punnpin Gone
Quarter No.5, Mayangone Township, Yangon, Union of Myanmar

Tel. (951) 650977, 660466

Fax (951) 650478, 650479

Type of Business Gas pipeline Transportation in Union of Myanmar

Percent of Interest PTTEPO holds 25.50%

Number of Issued Shares 1,000,000 ordinary shares, USD 0.03 per share

Number of Shares Owned PTTEPO holds 255,000 ordinary shares

15) Taninthayi Pipeline Company LLC or TPC

Location The Offices Maples and Calder, Attorney-at-Law, Ugland House,
P.O. Box, Grand Cayman

Mailing Address 16 Shwetaung Kyar, Bahan 11201, Yangon, Union of Myanmar

Tel. (951) 526411, 525704

Fax (951) 525698, 525684

Type of Business Gas Pipeline Transportation in Union of Myanmar

Percent of Interest PTTEPO holds 19.31784%

Number of Issued Shares 100,000 ordinary shares, USD 1 per share

Number of Shares Owned PTTEPO holds 19.31784 ordinary shares

16) Carigali-PTTEPI Operating Company Sdn.Bhd. or CPOC

Location Level 14, Tower 1 PETRONAS Twin Towers, Kuala Lumpur City
Centre, 50088 Kuala Lumpur, Malaysia

Tel. (603) 2331 5833

Fax (603) 2331 1858

Type of Business Operation in JDA Project

Percent of Interest PTTEPI holds 50%

Number of Issued Shares 100,000 ordinary shares, MR (Malaysia Ringitt) 1
per share

Number of Shares Owned PTTEPI holds 50,000 ordinary shares

17) Thaioil Power Company Limited or TOP

Location 123 Suntowers Building B, 12th Floor, Vibhavadi-Rangsit Rd.,
Bangkok 10900 Thailand

Tel. 66 (0) 2617-8300

Fax 66 (0) 2617-8299

Type of Business Power Generation and Sale

Percent of Interest PTTEPI holds 26%

Number of Issued Shares 281,000,000 ordinary shares, 10 baht per share

Number of Shares Owned PTTEPI holds 73,060,000 ordinary shares

15.2 Share Registrar

Name Thailand Securities Depository Company Limited

Location SET Bldg. 4, 6-7 floor, 62 Ratchadapisek Rd.

  Klongtoey, Bangkok 10110, Thailand

Tel. 66 (0) 2229-2800

Fax 66 (0) 2359-1262-63

3.  Debenture Registrar

1)  Debenture Baht 2,500 million

  Name Thai Military Bank Public Company Limited

  Location 393 Silom Road, Bangrak, Bangkok 10500

  Tel. 66 (0) 2230-5575 66 (0) 2230-5000

  Fax 66 (0) 20-2236-7939

  2) Yankee Bond US$ 200,000,000

Name The Bank of New York

Location One Temasek Avenue, #02-01 Millenia Tower, Singapore 039192

Tel. (65) 6432-0286

Fax. (65) 6883-0338

  3) Yakee Bond 23,000,000,000 Yen

  Name Sumitomo Mitsui Banking Corporation

  Location Yusen-Odenmacho Building,

  13-6, Kodenma-cho, Nihonbashi, Chuo-ku, Tokyo 103-0001, Japan

  Tel. 81-3-5640-6634

  Fax. 81-3-5695-5202

15.4 Auditor

Name Office of the Auditor General of Thailand

Location Rama VI Rd., Phayathai, Bangkok 10400, Thailand

Tel. 66 (0) 2618 5803

Fax 66 (0) 2618 5807

15.5 Legal Consultant

Name Herbert Smith (Thailand) Limited

Address 1401 Abdulrahim Place

990 Rama IV, Bangkok 10500, Thailand

Tel. 66 (0) 2657-3888

Fax 66 (0) 2636-0657

Name Clifford Chance (Thailand) Limited

Address Floor 21 Sindhorn Building Tower 3

130-132 Wireless Road

Pathumwan Bangkok 10330

Tel 66 (0) 2263 2250

Fax 66 (0) 2263 2240

15.6 Other Advisors

1) Name Ms. Sukon Kanchanalai

Advisor to the Board of Director on Accounting & Commercial Issues

Address 188 Soi 16 South Tesbanimit Rd.,

Prachanivej I, Chutuchak District, Bangkok 10900, Thailand

Tel. 66 (0) 2589-5566

Fax 66 (0) 2537-4444

2) Name Dr.Tongchat Hongladaromp

Advisor on Management Issues

Address 8/48 Sukhumvit 23 Prasarnmitr Condominium
North Klongtoey Sub-District Watana District, Bangkok 10110

Tel. 66 (0) 2258 4363

Fax 66 (0) 2258 4363

3)  Name 19 NOV.95 Co., Ltd.

  Advisor on Petroleum Exploration and Development Issues in the Gulf of
  Thailand and Myanmar M3&M4 Project

  Address 708 Sriyan Soi 1 Nakornchaisri Rd., Bangkok 10300

 Tel: 66 (0) 2243 3674 66 (0) 2243 3644 66 (0) 2669 0880 

 Fax: 66 (0) 2243 3674

4)  Name YBhg Dato’ Mohamad Idris bin Mansor

  Advisor on International Exploration and Development Issues

  Address 33 Jalan Firus 7/7, Section 7 40000 Shah Alam, Selangor
  Malaysia

 Tel: +603-55107736 

 Fax: +603-55107431