摘要
本文在分析了四川盆地川西凹陷的构造史、三烃史和成岩史之后,提出了侏罗系致密红层天然气富集的概念模式。认为致密层中富集的天然气主要是在早白垩世末期地层致密以前由水相和气—水两相运移的产物,其后,在地层致密过程中有大量天然气散失,残留下来的部分则形成现今超压、致密的含气储集体。
After having analyzed the structural history, hydrocarbon-generation history and diagenetic history of West Sichuan Sag in Sichuan Basin, the author proposes an ideal mode of natural gas in the red tight beds of Jurassic and considers that the natural gas accumulated in the tight beds was mainly the products through water phase migration and gas-water biphase migration before the beds had not been tightened in the last stage of Early Cretaceous, then a lot of the natural gas escaped during compacting process of the beds and the remained part formed the tight gas reservoirs with excess hydrostatic pressure at present.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
1992年第3期7-13,共7页
Natural Gas Industry
关键词
四川西部
侏罗系
致密砂岩
运移
West Sichuan, Jurassic, tight sandstone, natural gas, migration, pool-formed mode.
