November 2001

Drilling

There were 5 exploration wells, 20 development wells and 2 water-injection wells which have been operated by Thai Shell Exploration and Production Ltd., PTT Exploration and Production Public Co., Chevron Offshore Thailand Ltd. Sino-U.S. Petroleum Inc. and Unocal Thailand Ltd. as follow:

Well name
Rig name / Company
Block / Latitude
Longitude / Drilling Date / Depth (m) / Result

Exploration Well

Arthit-15-1S
Trident 15 / PTTEP
B15A / 08 14 30.875
102 32 33.289 / 7 Nov 01
15 Nov 01 / 2,590.00 / Gas
Abandoned
Arthit-15-9
Trident 15 / PTTEP
B15A / 08 12 42.674
102 33 46.507 / 16 Nov 01
26 Nov 01 / 3,240.00 / Gas
Abandoned
Arthit-15-10
Trident 15 / PTTEP
B15A / 08 13 43.296
102 27 49.571 / 26 Nov 01 30 Nov 01 / 3,100.00 / Drilling
Arthit-14-4
Trident 15 / PTTEP
B14A / 08 21 09.183
102 30 24.241 / 22-31 Oct 01,
1-6 Nov 01 / 3,542.00 / Gas
Abandoned
10A-3
Ensco 53 / Unocal
B10A / 09 54 15.273
101 29 43.945 / 22-31 Oct ,
6 Nov 01 / 3,706.37 / Oil & Gas
Abandoned

Development Well

Onshore
Well name
Rig name / Company
Block / Latitude
Longitude / Drilling Date / Depth (m) / Result
Bung Muang 2 -10
F250-3DH / Sino U.S.
NC / 16 39 53.440
99 47 42.104 / 28 Nov 01
30 Nov 01 / 552.00 / Drilling
Offshore
Well name
Rig name / Company
Block / Latitude
Longitude / Drilling Date / Depth (m) / Result
Benchamas B-26 (F)
Compact Driller / Chevron
B8/32 / 10 36 15.503
101 16 20.690 / 25-31 Oct, 11-21Nov 01 / 3,543.30 / Gas
Suspended
Benchamas B-27 (F)
Compact Driller / Chevron
B8/32 / 10 36 15.503
101 16 20.690 / 1 Nov 01
3 Nov 01 / 1,310.00 / Abandoned
(Drill pipe stuck)
Benchamas B-27ST1(F)
Compact Driller / Chevron
B8/32 / 10 36 15.503
101 16 20.690 / 8 Nov 01
10 Nov 01 / 1,833.00 / WOD
Benchamas B-28 (I1)
Compact Driller / Chevron
B8/32 / 10 36 15.503
101 16 20.690 / 26-27 Oct 01 22-30Nov 01 / 3,433.00 / Drilling
Benchamas B-29 (B)
Compact Driller / Chevron
B8/32 / 10 36 15.503
101 16 20.690 / 27-28 Oct, 6-8 Nov 01 / 1,928.70 / WOD
BK-12-H
Smedvig T-8 / PTTEP
B15 / 08 13 46.165
102 15 05.504 / 30 Oct 01 13 Nov 01 / 3,586.00 / Gas
Suspended
Well name
Rig name / Company
Block / Latitude
Longitude / Drilling Date / Depth (m) / Result
Pailin C-14
Smedvig T-7 / Unocal
B12/27 / 08 42 20.290
101 17 50.901 / 06 Oct 01
20 Oct 01 / 3,749.34 / Gas
Suspended
Pailin C-17
Sal T-7 / Unocal
B12/27 / 08 42 20.290
101 17 50.901 / 7 Oct 01
4 Nov 01 / 3,870.96 / Gas
Suspended
Pailin C-19
Sal T-7 / Unocal
B12/27 / 08 42 20.290
101 17 50.901 / 7-13 Oct,
16-25Nov 01 / 4,394.61 / Gas
Suspended
Pailin C-25
Sal T-7 / Unocal
B12/27 / 08 42 20.290
101 17 50.901 / 7-13 Oct, 12-16Nov 01 / 4,162.04 / Gas
Suspended
Pailin C-21
Sal T-7 / Unocal
B12/27 / 08 42 20.290
101 17 50.901 / 7-9 Oct,
25-30Nov 01 / 3,709.41 / Drilling
Pailin C-24
Sal T-7 / Unocal
B12/27 / 08 42 20.290
101 17 50.901 / 8-14 Oct,
4-12 Nov 01 / 4,223.61 / Gas
Suspended
Plamuk B-03
Sal T-4 / Unocal
B10 / 09 44 35.396
101 16 24.967 / 11 Nov 01
25 Nov 01 / 3,520.44 / Oil & Gas Suspended
Plamuk B-05
Sal T-4 / Unocal
B10 / 09 44 35.396
101 16 24.967 / 11 Nov 01
20 Nov 01 / 3,389.37 / Oil & Gas Suspended
Plamuk B-13
Sal T-4 / Unocal
B10 / 09 44 35.396
101 16 24.967 / 21-27 Sept, 3-11Nov 01 / 3,485.39 / Oil & Gas Suspended
Plamuk B-12
Sal T-4 / Unocal
B10 / 09 44 35.396
101 16 24.967 / 22 Sept 01
3 Nov 01 / 3,553.36 / Oil & Gas Suspended
Yala A-16
ENSCO-53 / Unocal
B10 / 09 57 18.948
101 26 59.796 / 9 Nov 01 20 Nov 01 / 3,764.89 / Oil & Gas Suspended
Yala A-9
ENSCO-53 / Unocal
B10 / 09 57 18.948
101 26 59.796 / 9 Nov 01
29 Nov 01 / 3,603.65 / Oil & Gas Suspended
Yala A-10
ENSCO-53 / Unocal
B10 / 09 57 18.948
101 26 59.796 / 10 Nov 01
30 Nov 01 / 2,751.43 / Drilling

Water Source and water Injection Well

Well name
Rig name / Company
Block / Latitude
Longitude / Drilling Date / Depth (m) / Result
LKU-E24 (EZ)
Deutag-T48 / Thai Shell
S1 / 16 39 45.145
99 52 29.994 / 27-31Oct 01-3 Nov 01 / 2,626.00 / Water Injector/ Active
LKU-E25 (EE)
Deutag-T48 / Thai Shell
S1 / 16 39 42.266
99 52 25.991 / 30 Nov 01 / 813.90 / Water Injector/ Drilling

Estimated Sale Volume : November 2001

Field / Block / Gas
(MMSCF) / Condensate
(BBLS) / Oil
(BBLS)

Unocal Thailand, Ltd.

Erawan / B12-B13 / 7,189.212 / 170,792 / 0
Baanpot / B13 / 127.681 / 3,905 / 0
South Satun / B11-B12 / 946.619 / 18,159 / 0
Satun / B11-B12 / 3,088.753 / 78,685 / 0
Pladang / B11 / 780.321 / 34,413 / 0
Trat / B11 / 2,910.112 / 55,861 / 0
Platong / B10-B11 / 557.750 / 41,063 / 0
Kaphong / B10 / 447.039 / 0 / 152,533
Surat / B10 / 0.000 / 0 / 0
Plamuk / B10 / 289.339 / 0 / 109,001
Funan / B12 / 3,698.887 / 139,416 / 0
Jakrawan / B12-B13 / 380.445 / 773 / 0
West Jakrawan / B12-B13 / 1,342.367 / 23,628 / 0
Gomin / B13 / 225.942 / 15,278 / 0
Pailin / B12/27 / 2,865.444 / 114,099 / 0
Yala / B10 / 0.000 / 0 / 0

PTT Exploration and Production Public Company Limited

Bongkot / B15 / 17,101.750 / 513,019 / 0

Chevron

Tantawan / B8/32 / 1,766.702 / 0 / 585,275
Benchamas / B8/32 / 4,386.632 / 0 / 904,580

Thai Shell Exploration and Production Co., Ltd.

Sirikit et al / S1 / 1,238.393 / 565,403 / 565,403

Esso Exploration and Production Khorat Inc.

Nam Phong / E5 / 1,851.903 / 0 / 0

PTT Exploration and Production Public Co., Ltd.

Kamphaeng Saen&U Thong / PTTEP1 / 0.000 / 0 / 15,315

Sino-U.S. Petroleum Inc.

Bung Ya&Bung Muang / NC / 0.000 / 0 / 22,775

Pacific Tiger Energy (Thailand) Ltd.

Wichian Buri / SW1 / 0.000 / 5,457
Total / 51,195.291 / 1,209,089 / 2,360,338