川中—川南过渡带嘉二气藏成藏条件分析及有利区块评价  

Analysis on forming conditions of Jia 2 gas reservoir in Central Sichuan-South Sichuan transitional zone

作　　者：赵永刚[1] 陈景山[2] 雷卞军[2] 李延均[2] 杨金利[2] 周慧成[2] 

机构地区：[1]西安石油大学油气资源学院,陕西西安710065 [2]西南石油大学,四川成都610500

出　　处：《大庆石油地质与开发》2006年第5期17-20,共4页Petroleum Geology & Oilfield Development in Daqing

基　　金：四川省重点学科建设项目(SZD0414)资助

摘　　要：通过烃源条件、储盖组合、圈闭类型、天然气运聚特征和保存条件等方面的深入分析,发现川中—川南过渡带嘉二段气藏成藏条件优越,其中天然气的近源垂向运聚和理想的保存条件是嘉二段成藏的重要保障。同时,认识到有利的沉积相、建设性成岩作用、背斜构造、烃源断层和硬石膏岩层是该区嘉二段气藏成藏的主要控制因素,其综合作用使得该气藏成藏规律复杂。在此基础上,对研究区嘉二段气藏的有利成藏区块进行评价,认为该区嘉二段气藏的勘探开发潜力很大。This paper analyzes hydrocarbon source condition, reservoir and seal combination, trap type, gas migration and accumulation characteristics and preservation conditions, and finds that Jia 2 reservoir in Central Sichuan-South Sichuan transitional zone has favorable gas reservoir forming conditions, among which near-source vertical migration and ideal preservation condition of gas are important guarantee of formation of Jia 2 reservoir. It indicates that favorable sedimentary facies, constructive diagenesis, anticlinal structure, hydrocarbon source fault and anhydrite rock formation are main controlling factors of Jia 2 reservoir forming. Their comprehensive effect causes complicated reservoir forming rules. Based on above analysis, it evaluates favorable reservoir forming areas in Jia 2 reservoir and proposes that Jia 2 reservoir has potential of exploration and development.

关 键 词：嘉二段气藏 成藏条件 烃源断层 硬石膏岩层 有利区块评价 

分 类 号：TE122[石油与天然气工程—油气勘探]