Major Controlling Factors of Gas Pooling and Exploration Directions in the Upper Triassic in the Western Sichuan Basin
详细信息
- 责任者：Pei Senqi (Northwestern Sichuan Division ; Southwest Oil and Gasfield Company ; PetroChina ; Jiangyou 621709 ; China) ; Li Yuegang
- 刊名：Natural Gas Industry
- 出版年：2012
- 卷期：32(10)
- 关键词：天然气 ; natural gas ; 油气勘探 ; petroleum exploration ; 四川盆地 ; Sichuan Basin
- 页码：p.6-9,13
- 图表：illus., 1 table, 6 refs.
- 分类号：1003
- issnNo：ISSN1000-0976
- isbnNo：CN51-1179/TE
摘要
On the basis of analyzing the main reservoir forming conditions and in combination with regional structures and hydrocarbon evolution as well as their configuration relationship between time and space,this paper discusses the mechanism and major controlling factors of hydrocarbon migration and accumulation.The Upper Triassic source rocks in the western Sichuan Basin are featured by great thickness,high TOC contents,and heavy hydrocarbon generation intensity,which are all favorable conditions for gas accumulation.The geometric configuration is the key to gas accumulation,hydrocarbon generation intensity controls the abundance of gas reservoirs,the superimposition of structures controls the quality of gas reservoirs,and large faults control the modification,recombination and fullness of gas reservoirs.This paper also presents the future exploration directions.