Hydrocarbon Origin and Accumulation Model of Kedong-Kekeya Tectonic Belt in Piedmont of West Kunlun Mountain
详细信息
- 责任者：Mo Wuling (Institute of Oil and Gas ; Peking University ; Beijing 100871 ; China) ; Lin Tong
- 刊名：Petroleum Geology & Experiment
- 出版年：2013
- 卷期：35(4)
- 关键词：油气成因 ; oil-gas origin ; 成藏模式 ; pool-formed model ; 昆仑山 ; Kunlun Mountains
- 页码：p.364-371
- 图表：illus., 20 refs.
- 分类号：1003
- issnNo：ISSN1001-6112
- isbnNo：CN32-1151/TE
摘要
In the foreland of Western Kunlun Mountain,3 sets of hydrocarbon source rock developed,including the Heshilafu Formation in the Lower Carboniferous,the Pusige Formation in the Lower Permian and the Yangye Formation in the Middle Jurassic.Analysis of source rock distribution,hydrocarbon property,oil-source and gas-source correlation in the Kedong-Kekeya tectonic belt in the foreland of Western Kunlun Mountain led to the fo-llowing2 conclusions: a) Oil in the Kedong-Kekeya tectonic belt mainly originated from relatively highly-mature organic matter of typeⅡin Permian.b) Natural gas mainly came from Permian,and partially from Jurassic and Carboniferous.Based on the study of tectonic evolution,fluid inclusions and hydrocarbon accumulation evolution history of the well Kedong 1 and the Kedong-Kekeya tectonic belt,the author analyzed the accumulation process of hydrocarbon and summarized the accumulation model of hydrocarbon in the Kedong-Kekeya tectonic belt.Accumulation process of hydrocarbon in the Kedong-Kekeya tectonic belt can be divided into 4 periods which include initial charging period of oil,oil-charging window,gas-charging window and hydrocarbon-adjusting period.To figure out the source and accumulation process of hydrocarbon in the Kedong-Kekeya tectonic belt can provide important reference to expand exploration scope and find more petroleum resource in the study area.
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