特种油气藏2018，Vol.25Issue(1)：46-51,6.DOI:10.3969/j.issn.1006-6535.2018.01.010
川西坳陷回龙构造雷口坡组天然气成藏条件
Natural Gas Accumulation Conditions in Leikoupo Formation of Huilong Structure,Western Sichuan Depression
摘要
Abstract
On the basis of regional petroleum geology studies,by 3D seismic interpretation and organic geochemical analysis etc.,we comprehensively analyzed the natural gas accumulation conditions in the Leikoupo Formation of the Huilong structure,Western Sichuan Depression. The study result shows that marine source rocks are well-de-veloped in the Huilong area;the hydrocarbon-source faults that vertically connect the Leikoupo Formation and un-derlying Permian marine formations and the unconformity surface at the Leikoupo Formation top in lateral direction can act as fine hydrocarbon migration and conduction systems;natural gas accumulation has fine gas source condi-tion with"two hydrocarbon supplies";the Leikoupo Formation has high-quality reservoirs and fine source-reser-voir-caprock assemblage. The Huilong structure has ideal trap type,with big fault nose trap area. Moreover,the karst fracture-cave developed region at the Leikoupo Formation top is just at the high position. The study and breakthrough in this area is of great significance for expanding exploration scope and exploration domain of the Leik-oupo Formation in the whole Western Sichuan Depression,and it is the favorable target for deploying risk prospect wells in the future.关键词
成藏条件/地球化学/回龙构造/雷口坡组/川西坳陷Key words
accumulation condition/geochemistry/Huilong structure/Leikoupo Formation/Western Sichuan De-pression分类
能源科技引用本文复制引用
胡烨,陈迎宾,王彦青,袁晓宇..川西坳陷回龙构造雷口坡组天然气成藏条件[J].特种油气藏,2018,25(1):46-51,6.基金项目
国家科技重大专项"大型油气田及煤层气开发"之"中西部地区碎屑岩层系油气富集规律与勘探方向"专题(2016ZX05002-006) （2016ZX05002-006）
