米仓山山前带油气成藏地质条件分析  

RESERVOIR-FORMING GEOLOGICAL CONDITIONS OF MICANGSHAN FORELAND THRUST BELT

作　　者：谢邦华[1] 陈盛吉[1] 黄纯虎[2] 万茂霞[1] 杜敏[1] 

机构地区：[1]中油西南油气田公司勘探开发研究院 [2]中油西南油气田公司川中油气矿研究所

出　　处：《天然气勘探与开发》2007年第2期18-20,共3页Natural Gas Exploration and Development

摘　　要：通过对四川盆地北部米仓山山前带的油气成藏条件进行分析研究,认为研究区具有下寒武统—下侏罗统多套烃源岩层系,烃源条件充足;二叠系—侏罗系存在多套储集层段,储集体发育;侏罗系广泛分布的区域性盖层以及各储集层顶部的直接盖层,可对油气起到有效的封盖作用;油气运聚受古构造格局及断层、裂缝系统控制;区内具有形成丰富圈闭的条件,可供钻探目标多。综合认为:研究区油气成藏地质条件总体上较为有利,具备形成大中型气田的有利条件。Studying the reservoir-forming conditions of Micangshan foreland thrust belt, northern Sichuan Basin, illustrates that this studied area is characterized by sufficient sources, many suites of source rocks varied from Lower Cambrian to Lower Jurassic; developed reservoir bodies, many suites of reservoirs varied from Permian to Jurassic; effective caprocks including widespread Jurassic regional caprocks and better direct caprocks within reservoirs; the special migration and accumulation pattern controlled by plaeostructural style, faults and fractures; abundant traps for drilling targets. So, the area is favorable for forming a middle- to large-scale gasfield with better reservoir-forming geological conditions.

关 键 词：米仓山 山前带 烃源 储集层 成藏地质条件 

分 类 号：P618.13[天文地球—矿床学]