摘要
在总结国内外断层封闭与油气运移和聚集研究成果的基础上，系统讨论了碎屑岩层序中断层的封闭机理、断层与油气运移的关系以及断层圈闭的油气差异聚集作用。通过黄骅坳陷北塘凹陷断层的封闭性及断层油气藏差异聚集分析，表明断层在活动停止期主要起封闭作用，但在正常压实层序段仍有少量轻组分的烃类沿断层发生运移而引起差异聚集；而在欠压实带，异常高孔隙流体压力使断层在纵向上具有很强的封闭性。
On the basis of recent researches on fault sealing and its hydrocarbon migration and accumulation in a clastic sequence, a complete discussion is carried out in this paper With a differential accumulation analysis of the fault closeness and the difference of faulted reservoir in Beitang depression, it is suggested that(1) an inactive fault in clastic sequence may mainly restrict hydrocarbon migration; (2)undercompacted shales with overpressure can lead to strongly restricting hydrocarbon migration along faults; (3)hydrocarbon segregation associated with fault traps more probably takes place in undercompacted zone with abnormal hydropressure
出处
《江汉石油学院学报》
CSCD
北大核心
1999年第1期9-12,共4页
Journal of Jianghan Petroleum Institute
基金
国家"八五"重点科技攻关课题
关键词
断层
油气运移
油气聚集
fault
oil and gas migration
oil and gas accumulation
differential migration
