摘要
在论述西湖凹陷沉积演化，生烃岩、生烃凹陷和油气生成期的基础上，对油气运移的时间、过程和动力进行了界定，论证了生烃岩在压实固结过程中释放的压实水和粘土矿物转化释水在油气初次运移中的贡献，进行了排烃量的估算，论述了渗透层中重力水的流动态势和油气二次运移的时间和指向，并从地质、水文地质、地球化学三个方面综合评价了西部斜坡，中央长垣和东部断阶利于油气运聚成藏的条件和地段。
Based on the study of sedimentary evolution, source rock, source sags and hydrocarbon generating time, the time and process and dynamics of oil/gas migration are defined. It is proved that the water released from the compaction of source rock and the transformation of clay mineral is very important in the oil/gas primary migration. It estimated the hydrocarbon expulsion amount and described the flow regime of gravity water in the permeable formation and the time and direction of oil/gas secondary migration. According to the comprehensive analysis from geology, hy-drogeology and geochemistry, it is believed that the west slope, central uplift and east fault terrace are favorable oil/gas migration and accumulation area for exploration.
出处
《中国海上油气（地质）》
1997年第5期305-312,共8页
China Offshore Oil and Gas(Geology)
基金
国家自然科学基金资助项目（编号49472154)
关键词
西湖凹陷
油气运聚
成藏
水文地质
沉积体系
渗流场
sedimentary system
seepage field
oil/gas migration and accumulation
Xihu sag
