川西龙门山前缘雷口坡组油气成藏条件  

Conditions of Hydrocarbon Accumulation in the Leikoupo Formation,Longmenshan Frontal Margin,West Sichuan

作　　者：罗啸泉[1] 唐桂宾[1] 

机构地区：[1]中石化西南油气分公司勘探开发研究院,成都610081

出　　处：《四川地质学报》2012年第1期32-35,共4页Acta Geologica Sichuan

摘　　要：龙门山前雷口坡组烃源岩为中等烃源岩,干酪根类型以Ⅰ型干酪根为主,生气丰度30～50×108m3/km2,生气中心在安县。雷口坡组储集岩为粒屑白云岩,主要发育于雷三段,其次为雷一段,为孔隙性储层。研究表明这些粗结构碳酸盐岩的发育与滩相沉积环境密切相关。中坝雷三气藏成藏主控因素是:早期的构造,有利的储层和良好的保存条件。龙门山前缘雷口坡组天然气勘探前景良好,龙门山前缘中北段双鱼石至金河一带为有利勘探区带。The hydrocarbon source rock in the Leikopo Formation on the Longmenshan frontal margin is secondary one with kerogen I, an angry abundance of 30-50 x 10^8m^3 / km^2, angry center in Anxian. The reservoir bed as a porous-type reservoir of the Leikoupo Formation is allochemical dolomite which is mainly developed in the Members 3 and 1. The study indicates that the allochemical dolomite was closely related to beach facies. Principal gas accumulation controls for the Member 3 of the Leikoupo Formation at Zhongba are early structure, favorable reservoir and good preservation conditions. The Leikoupo Formation on the Longmenshan frontal margin, especially in Shuangyushi-Jinhe section, is of good gas exploration prospect.

关 键 词：雷口坡组 成藏条件 勘探潜力 龙门山前缘 

分 类 号：P618.13[天文地球—矿床学]