摘要
川西上三叠统碎屑岩储层是一套低孔、低渗，具高异常地层压力的致密砂泥岩层。须家河组可视为一个完整的含气高压封存箱，以生烃增压为箱内主要的升压机制。喜马拉雅期构造运动对原始高压封存箱的压力场进行调整改造。依据流体封存箱的发展、改造与定型状况，将川西地区划分为箱顶板断通型、断开型、未断型三种气藏类型。
The Upper Triassic classic reservoir of west Sichuan is a kind of sandstone with low porosity and permeability , intercalated by mudstone layers with abnormally high pressure. The Xujiahe Formation can be regarded as a complete gas bearing compartment with abnormally high pressure, in which pressure upgrading regime is caused by hydrocarbon generation. Himalayan tectonic movement adjusted the initial pressure field in abnormal pressure compartment. Based on the circumstances of development, reconstruction and becoming fixed, gas reservoirs in west Sichuan can be subdivided into three kinds, that is, the top board of compartment being broken open, broken but obstructed and unbroken. In this paper, the relation between the forming and developing process of abnormal pressure compartment and gas reservoir is also discussed.
出处
《成都理工学院学报》
CSCD
1999年第4期411-417,共7页
Journal of Chengdu University of Technology
基金
地质矿产部重点科技项目
关键词
川西地区
上三叠统
高压封存箱
天然气
成藏
West Sichuan
Upper Triassic
abnormal pressure compartment
gas reservoir
