东海西湖凹陷含油气系统特征

顾惠荣; 贾健谊; 叶加仁

doi:10.11743/ogg20020321

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专辑

东海西湖凹陷含油气系统特征
CHARACTERISTICS OF OIL AND GAS BEARING SYSTEM IN XIHU LAKE DEPRESSION IN THE EAST CHINA SEA
2002年23卷第3期页码：295-297
网络首发：2002-09-25，

纸质出版：2002
DOI： 10.11743/ogg20020321
稿件说明：

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顾惠荣, 贾健谊, 叶加仁. 东海西湖凹陷含油气系统特征[J]. 石油与天然气地质, 2002,23(3):295-297. DOI： 10.11743/ogg20020321.

Gu Huirong, Jia Jianyi, Ye Jiaren. CHARACTERISTICS OF OIL AND GAS BEARING SYSTEM IN XIHU LAKE DEPRESSION IN THE EAST CHINA SEA[J]. 2002, 23(3): 295-297. DOI： 10.11743/ogg20020321.

摘要

东海西湖凹陷自晚白垩纪以来

经历了 3个发展阶段

形成了平湖组花港组、花港组和始新统 3套含油气系统

其中

前两套为已知系统

后者为推测系统。两套已知系统的烃源岩现今均处于成熟阶段

花港组含油气系统的盖层自南而北封闭性变差

其中南部的油气勘探更具现实意义。综合分析表明:平湖组花港组含油气系统的关键时刻在距今 7Ma左右

花港组含油气系统在距今 1.64Ma左右。

Abstract

Xihu lake depression in the East China Sea has gone through three stages of development since the late Cretaceous

forming three sets of oil and gas systems of Pinghu Formation Huagang Formation

Huagang Formation and Eocene

the former two sets are-known systems

the latter system is a conjectured one. Hydrocarbon source rocks in these two systems are in the stage of maturation. The closure of oil and gas bearing roof rocks in Huagang Formation deteriorates from southward towards northward and the south part with real meaning for oil and gas exploration. Comprehensive analyses indicate that the key moment for oil and gas bearing system in Pinghu Foprmation and is about 7 Ma

oil and gas bearing system in Huagang Formation is about 1.64 Ma.