恩平地区成藏条件分析  

THE ANALYSIS OF HYDROCARBON ACCUMULATION CONDITIONS IN ENPING AREA

作　　者：李昭伟 

机构地区：[1]中国海洋石油南海东部公司，广州510240

出　　处：《中国海上油气（地质）》1999年第3期174-180,共7页China Offshore Oil and Gas(Geology)

摘　　要：EP11－1－1、PY4－2－1、EP20－3－1等3口井油气层的发现，证明恩平地区存在富生油凹陷，特别是PY4－2－1井的钻探成功，揭示了残留文昌组生油凹陷为富生油凹陷。文中结合1997年探井钻前钻后成果，对恩平地区成藏条件进行分析。可以认为，长期活动的大断裂系统对油气藏形成起控制作用，文昌组为主要油源岩，珠江组上段为良好储盖组合层段，T2以前圈闭形成是成藏的关键。The oil and gas reservoirs have been discovered in three wildcats of EP11-1-1 ,PY4-2-1 and EP20-3-1. This proves the existence of rich oil kitchen in Enping Area,especially, the drilling success of well PY4-2-1 shows that the residual oil source sag of Wenchang formation is a rich sag. By combining with the pre and post drilling results of exploration wells drilled in 1997,author has analyzed the hydrocarbon trapping conditions of Enping Area. It is believed that the large and long term activity fault system controls the formation of hydrocarbon pools and Wenchang formation which is the main oil soure rock,and the upper Zhu-jiang formation is still a good section of reservoir-seal combination. Trap timing before T2 is the key for hydrocarbon accumulation.

关 键 词：恩平地区 成藏条件 富生油凹陷 成油体系 

分 类 号：P618.130.2[天文地球—矿床学] TE12[天文地球—地质学]