Details of Petroleum Exploration Blocks Opened to Bid

DETAILS OF PETROLEUM EXPLORATION BLOCKS OPENED TO BID

Details of the total 82 exploration blocks onshore, in the Gulf of Thailand and in the Andaman Sea opened to bid, “the geological constant factors of the exploration blocks” (under Section 100 sex of the Petroleum Act B.E. 2514) and “Special Reductions” (as prescribed in the Ministerial Regulation No.15 (B.E. 2532) issued under Section 100 tre (4) of the Petroleum Act B.E. 2514) are as follows:

1. ONSHORE : NORTHERN INTERMONTANE BASINS (TOTALLING BLOCKS WITH AN APPROXIMATE AREA OF SQUARE KILOMETERS)

Exploration
Block No. / Approximate
Area (sq. km.) / Geological Constant
(K) (Meters) / Special Reduction
(SR) (%)
L1/48 / 3,230 / 300,000 / 35
L2/48 / 3,905 / 300,000 / 35
L3/48 / 1,981 / 300,000 / 35
L9/48 / 3,934 / 300,000 / 35
L17/48 / 3,996 / 300,000 / 35

2. ONSHORE : CENTRAL PLAINS (TOTALLING BLOCKS WITH AN APPROXIMATE AREA OF SQUARE KILOMETERS)

Exploration
Block No. / Approximate
Area (sq. km.) / Geological Constant
(K) (Meters) / Special Reduction
(SR) (%)
L19/48 / 3,948 / 300,000 / 35
L25/48 / 3,962 / 300,000 / 35
L26/48 / 3,962 / 300,000 / 35
L35/48 / 3,975 / 300,000 / 35
L36/48 / 3,975 / 300,000 / 35
L53/48 / 3,997 / 300,000 / 35
L54/48 / 3,999 / 300,000 / 35
L55/48 / 3,999 / 300,000 / 35
L60/48 / 3,958 / 300,000 / 35

- 2 –

3. ONSHORE : SOUTHERN PLAINS (TOTALLING BLOCKS WITH AN APPROXIMATE AREA OF SQUARE KILOMETERS)

Exploration
Block No. / Approximate
Area (sq. km.) / Geological Constant
(K) (Meters) / Special Reduction
(SR) (%)
L61/48 / 3,875 / 300,000 / 35
L62/48 / 3,285 / 300,000 / 35
L63/48 / 3,877 / 300,000 / 35
L64/48 / 3,665 / 300,000 / 35

4. ONSHORE : KHORAT PLATEAU AND NAKHON THAI HIGH (TOTALLING BLOCKS WITH AN APPROXIMATE AREA OF SQUARE KILOMETERS)

Exploration
Block No. / Approximate
Area (sq. km.) / Geological Constant
(K) (Meters) / Special Reduction
(SR) (%)
L4/48 / 2,530 / 450,000 / 35
L5/48 / 1,560 / 450,000 / 35
L6/48 / 3,307 / 450,000 / 35
L7/48 / 3,875 / 450,000 / 35
L8/48 / 1,659 / 450,000 / 35
L10/48 / 3,921 / 450,000 / 35
L11/48 / 3,439 / 450,000 / 35
L12/48 / 3,934 / 450,000 / 35
L13/48 / 3,934 / 450,000 / 35
L14/48 / 3,934 / 450,000 / 35
L15/48 / 3,926 / 450,000 / 35
L16/48 / 1,888 / 450,000 / 35
L18/48 / 3,948 / 450,000 / 35
L20/48 / 3,978 / 450,000 / 35
L21/48 / 3,879 / 450,000 / 35
L22/48 / 3,948 / 450,000 / 35
L23/48 / 3,948 / 450,000 / 35
L24/48 / 2,189 / 450,000 / 35
L27/48 / 3,962 / 450,000 / 35

- 3 –

Exploration
Block No. / Approximate
Area (sq. km.) / Geological Constant
(K) (Meters) / Special Reduction
(SR) (%)
L28/48 / 3,962 / 450,000 / 35
L29/48 / 3,962 / 450,000 / 35
L30/48 / 3,962 / 450,000 / 35
L31/48 / 3,962 / 450,000 / 35
L32/48 / 3,962 / 450,000 / 35
L33/48 / 3,929 / 450,000 / 35
L34/48 / 1,973 / 450,000 / 35
L37/48 / 3,975 / 450,000 / 35
L38/48 / 3,975 / 450,000 / 35
L39/48 / 3,975 / 450,000 / 35
L40/48 / 3,975 / 450,000 / 35
L41/48 / 3,975 / 450,000 / 35
L42/48 / 3,975 / 450,000 / 35
L43/48 / 3,975 / 450,000 / 35
L44/48 / 3,940 / 450,000 / 35
L45/48 / 3,987 / 450,000 / 35
L46/48 / 3,987 / 450,000 / 35
L47/48 / 3,987 / 450,000 / 35
L48/48 / 3,908 / 450,000 / 35
L49/48 / 3,690 / 450,000 / 35
L50/48 / 3,799 / 450,000 / 35
L51/48 / 3,608 / 450,000 / 35
L52/48 / 3,780 / 450,000 / 35
L56/48 / 3,999 / 450,000 / 35
L57/48 / 3,999 / 450,000 / 35
L58/48 / 3,999 / 450,000 / 35
L59/48 / 2,795 / 450,000 / 35

- 4 –

5. OFFSHORE : GULF OF THAILAND (TOTALLING BLOCKS WITH AN APPROXIMATE AREA OF SQUARE KILOMETERS)

Exploration
Block No. / Approximate
Area (sq. km.) / Geological Constant
(K) (Meters) / Special Reduction
(SR) (%)
G1/48 / 17,610 / 600,000 / 35
G2/48 / 19,040 / 600,000 / 35
G3/48 / 11,800 / 600,000 / 35
G4/48 / 504 / 600,000 / 35
G5/48 / 556 / 600,000 / 35
G6/48 / 2,280 / 600,000 / 35
G7/48 / 420 / 600,000 / 35
G8/48 / 383 / 600,000 / 35
G9/48 / 252 / 600,000 / 35
G10/48 / 18,780 / 600,000 / 35
G11/48 / 13,600 / 600,000 / 35
G12/48 / 622 / 600,000 / 35

6. IN THE ANDAMAN SEA AREAS (TOTALING BLOCKS WITH AN APPROXIMATE AREA OF SQUARE KILOMETERS)

Exploration
Block No. / Approximate
Area (sq. km.) / Geological Constant
(K) (Meters) / Special Reduction
(SR) (%)
A 1/48 / 14,160 / 600,000 / 35
A 2/48 / 19,920 / 600,000 / 35
A 3/48 / 17,660 / 600,000 / 35
A 4/48 / 20,280 / 1,200,000 / 35
A 5/48 / 25,270 / 1,200,000 / 35
A 6/48 / 23,270 / 1,200,000 / 35

Details of the Latitude and Longitude of the exploration blocks are annexed hereto.