摘要
为了探讨四川盆地东部石炭系含气系统的形成与演化规律，研究了川东石炭系含气系统的早期聚集和二次成藏模式：第一次成藏从中三叠世末印支运动期—渐新世末喜山运动前，是以开江古隆起继承性发展为背景的烃类持续稳定向古隆起方向聚集和转化的过程，在喜山运动前形成了川东石炭系大面积的地层—构造复合型古气藏；第二次成藏始于渐新世末喜山运动早期，是以开江古隆起为背景的天然气在地层—构造复合圈闭、潜伏背斜圈闭及主体背斜圈闭中重新聚集成藏过程。
The
Carboniferous petroleum system, with its formation and evolution largely controlled by the
regional structural evolution, is one of the confirmed petroleum systems in eastern Sichuan
Basin. The pool-forming history of this petroleum system can be divided into two stages. The
first stage is from the Indosinian orogeny at the end of middle Triassic to pre-Himalayan
movement, during which constant hydrocarbon accumulation towards the Kaijiang paleohigh
occurred against a background of continuous growth of the paleohigh, resulting in the formation
of areally extensive stratigraphic-structural combination pools within the Carboniferous strata.
The second stage started in early Himalayan at the end of Oligocene, during which
post-accumulation re-distribution of hydrocarbons took place to have formed the
stratigraphic-structural combination pools and anticlinal pools on the Kaijiang paleohigh.
出处
《西南石油学院学报》
CSCD
1999年第1期35-38,56,共5页
Journal of Southwest Petroleum Institute
基金
"九五"国家重点科技攻关项目
关键词
石炭系
含气系统
二次成藏
四川盆地
油气藏
Carboniferous
petroleum system
pool-forming
evolution
Sichuan Basin
