高邮凹陷西部油气输导体系类型及特征研究  

Category and Characteristics of Pathway Systems for Hydrocarbon Migration and Accumulation in Western Gaoyou Sag

作　　者：陈强[1] 张卫海[1] 黄峰[1] 郭丽丽[1] 张伟忠[1] 

机构地区：[1]中国石油大学(华东)地球资源与信息学院,山东东营257061

出　　处：《石油天然气学报》2009年第2期183-186,192,共5页Journal of Oil and Gas Technology

摘　　要：根据输导层的类型及其作用,将高邮凹陷西部地区的输导体系划分为骨架砂体输导体系、断层输导体系和不整合输导体系3种类型。骨架砂体输导体系主要分布在阜一段上部、戴一段、戴二段和垛一段,横向上分布广泛,连通性好,是主要输导网络。不同级别断层输导体系封闭性差异较大,二级断层在阜宁组侧向封闭性中-到好,多数三、四级断层在阜宁组侧向封闭性差,大部分断层的垂向封闭性均较好。确定了吴堡不整合的有效输导能力,有效不整合输导体系主要分布于马家嘴、黄珏西部和东南部及南部断阶带。油气在韦庄地区的运移主要靠骨架砂体,马家嘴和黄珏地区主要靠断层垂向沟通油源,同时不整合和骨架砂体也起到了汇集和横向输导油气的作用。According to the types and affect of transporting layers, the pathway systems for hydrocarbon migration in western Gaoyou Sag were classified into three categories including sand body framework, fault and unconformity. Sand body framework pathway system distributed in upper Fu1, Dai1, Dai2 and Duo1 members. It was distributed well in cross range and well connection. It was the main pathway network for hydrocarbon migration. The sealing of different levels of fault pathway system was different. The lateral seal ability of 2nd level faults was from normal to good in Funing Formation. The lateral seal ability of 3rd and 4th level faults was poor in Funing Formation. The vertical seal ability of the most of faults was all good. It is confirmed that the Wubao unconformity is available for hydrocarbon migration. The available unconformity is mainly distributed in Majiazui Area, western and southwestern Huangjue and southern fault step belt areas. Hydrocarbon mainly migrates in sand body framework pathway system in Weizhuang Area. The fault pathway system plays a role in connecting the oil and source rock in Majiazui and Huangjue areas. At the same time, the unconformity and sand body framework play the role in accumulating and cross-line migration of the hydrocarbon.

关 键 词：输导体系 油气运移 骨架砂体 断层 不整合 高邮凹陷西部 

分 类 号：P618.13[天文地球—矿床学]