Later in the year, 2515 (1972) company Union oil (in Thai) co., Ltd. (present: Chevron. Thai International Limited) is boring a hole 12-1 in the natural gas and natural gas found 12.
Later in 2515, Union Oil Company (UK) Limited (now Chevron Canada Ltd.) has drilled 12 exploration well in Block 12-1 natural gas and natural gas liquids.
Later in the year 2515 Union Company Limited (now is Chevron, Thailand Co., Ltd.) drill holes in the plot survey 12-1 12 found natural gas and liquid natural gas