大兴安岭南部地区林西组油气勘探前景探讨  

DISCUSSION ON THE OIL-GAS EXPLORATION PROSPECTS OF LINXI FORMATION IN SOUTHERN DAXINGANLING REGION

作　　者：吴桐[1] 周铁锁[2] WU Tong;ZHOU Tie-suo(Shenyang Center of Geological Survey,CGS,Shenyang 110034,China;Liaohe Oilfield Company,CNPC,Panjin 124010,Liaoning Province,China)

机构地区：[1]中国地质调查局沈阳地质调查中心,辽宁沈阳110034 [2]中国石油辽河油田公司,辽宁盘锦124010

出　　处：《地质与资源》2018年第5期438-444,共7页Geology and Resources

基　　金：中国地质调查局"松辽外围南部盆地群油气基础地质调查"项目(编号DD20160167);中国石油天然气股份有限公司重大科技专项课题"辽河探区可持续规模增储勘探关键技术研究"(2017E-1601)

摘　　要：基于露头资料,利用有机地球化学分析技术,通过研究大兴安岭南部林西组地层及烃源岩发育特征,探讨有利勘探方向.结果表明:大兴安岭南部地区上二叠统林西组广泛发育,其沉积环境主体为三角洲-湖相沉积;林西组暗色泥岩有机质含量以中等为主,有机质类型为Ⅱ2～Ⅲ型,有机质热演化达到高熟—过熟阶段.该区开展油气勘探应远离侵入岩发育区,在有中生界覆盖地区,保存条件及盖层条件更为有利.Based on the outcrop informaiton,the organic geochemical analysis technique is applied to study the Linxi Formation in southern Daxinganling region and the development of source rocks for favorable exploration directions.The results show that the Upper Permian Linxi Formation is widely developed,which was mainly deposited in the delta-lacustrine environment.The total organic carbon(TOC)of dark mudstone from the formation is medium in content,with organic matter types ofⅡ2-Ⅲand thermal evolution reaching the high-post mature stage.From the above,the oil-gas exploration should keep away from the intrusive rock areas.The areas covered by Mesozoic strata have better storage and caprock conditions.

关 键 词：林西组 沉积特征 烃源岩 大兴安岭南部 

分 类 号：P618.13[天文地球—矿床学]