川西坳陷西缘中下三叠统油气成藏主控因素  

Main controlling factors of hydrocarbon accumulation of Middle-Lower Triassic in western margin of western Sichuan Depression

作　　者：宋晓波[1] 刘诗荣[1] 王琼仙[1] 邓大平[1] 

机构地区：[1]中国石化西南油气分公司勘探开发研究院贵阳地质研究所

出　　处：《岩性油气藏》2011年第1期67-73,共7页Lithologic Reservoirs

基　　金：中国石油化工股份有限公司科技项目"川西海相地层成藏主控因素研究"(编号:P07016)

摘　　要：四川盆地西部油气地质条件优越,已发现了多个海相气藏或含气构造,是一个具备天然气勘探潜力的领域。但近20多年来,由于勘探投入不够,海相碳酸盐岩勘探未取得大的突破,勘探程度仍然很低。文中在分别对川西坳陷西缘北、中、南3段典型构造(气藏)剖析的基础上,初步提出了川西坳陷西缘中下三叠统油气成藏主控因素为:滩相优质储层的发育是油气成藏的基础;保存条件是油气成藏的关键。The western Sichuan Depression has superior geologic condition of oil and gas,where has discovered many marine gas reservoir,so it is an area with gas prospecting potentia1.But in the recent twenty years,the exploration of marine carbonate reservoir did not get breakthrough,and the exploratory extent is low.The typical structural gas reservoirs in northern,middle and southern part of western margin of western Sichuan Depression are analyzed respectively.It is proposed that the development of high quality shoal facies reservoir is the basement for hydrocarbon accumulation,and the preservation condition is the key for hydrocarbon accumulation of Middle-Lower Triassic in western margin of western Sichuan Depression.

关 键 词：油气成藏 主控因素 中下三叠统 川西坳陷 

分 类 号：TE122.3[石油与天然气工程—油气勘探]