Title: The multi-stage formation of oil-gas pools and late-stage accumulation of gas in the foreland basins in central and western China
Abstract: There were excellent geological conditions for formation of gas pools that accumulated in the late stages of foreland basins in middle western China. The paper analyzes the hydrocarbon accumulation of gas pools in the western Sichuan foreland basin, northern Qaidam thrust and the southern Junggar foreland basin. It indicates that the oil-gas fields were formed by multi-stage filling and that the gas pools accumulated in the late stages of the foreland basins. There were two most important stages for oil-gas accumulation in the foreland basins of middle western China. One was the Late Yanshanian movement when oil and gas accumulated mainly from source rocks of a passive continental margin and from Triassic foreland basins in central China; another during the Late Himalayan movement when oil and gas mainly from Meso-Cenozoic source rocks of intra-continental foreland basin in western China and accumulated in gas fields of peripheral foreland basins in central China. The sedimentation of foreland basin in the Neogene had a controlling influence on the late-stage accumulation of gas, which is mainly derived from Mesozoic coal measure.
Publication Year: 2005
Publication Date: 2005-01-01
Language: en
Type: article
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Cited By Count: 11
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