东濮凹陷濮卫洼陷油气聚集条件  

Conditions of Hydrocarbon Gathering in Puwei Sag,Dongpu Depression

作　　者：方鹏飞 寇韩生 秦文龙[3] 张文选[3] 吕勇帅[3] 李向洋[3] 张晨[3] 

机构地区：[1]陕西省神木县矿业地质测量管理站,陕西神木719300 [2]中国石油长庆石油勘探局培训中心,甘肃庆阳745217 [3]西北大学地质系,西北大学大陆动力学国家重点实验室,陕西西安710069

出　　处：《西北地质》2011年第4期113-121,共9页Northwestern Geology

基　　金：陕西省自然科学基金(2005D10)资助

摘　　要：为加快东濮凹陷濮卫洼陷滚动勘探开发,分析本区沙三中亚段油气聚集条件特征,结合沉积相与砂体展布预测了洼陷有利油气聚集区。东濮凹陷濮卫洼陷发育巨厚的砂体展布,具有断陷湖盆分布体系多物源、多期次演化密切相关的特点,为油气聚集条件打下了良好的物质基础。通过对构造的研究,钻井岩心和测井的综合分析,认为濮卫洼陷具有多种有利的油气聚集条件。即广布的成熟烃源岩是油气生成的物质基础,不同类型砂体展布提供了重要储集空间,多套盐岩的沉积形成了良好的盖层分布,多种成因类型的圈闭是油气藏聚集的主要场所。通过对沙三中亚段8、4、3砂层组的初步分析,评价结果认为4砂层组情况最好,洼陷西翼中部和西北部为最有利区块。For the purpose of petroleum investigation and development in Puwei Sag,Dongpu depression,the condition characteristics of hydrocarbon gathering of the Mid-sha-3 member,Shahejie formation,Eogene in Puwei sag have been studied.On the studying basis of depositional facies belt and sandstone body distribution,the favorable block for oil and gas to accumulate is predicted.The thick sand body distributions developed well lay a sound foundation for favourable sandstone reservoir in Puwei sag,Dongpu depression which provided a good base for hydrocarbon gathering.Through the study of structure,comprehensive analysis of core drilling and logging,we find many favorable conditions for hydrocarbon gathering in Puwei sag.The widespread mature hydrocarbon source rocks are the important base for hydrocarbon gathering,and the spread of different types of sand bodies provide an important reservoir space.Multiple sets of salt sedimentary cover formed a good distribution,the various genetic types of traps are the main reservoir gathering place.Evaluation has been carried out for sand-bearing beds from the Mid-sha-3 member.The results show that the best is the 4 sand-bearing bed and the most favorable block is in the middle and northwest of the west sag.

关 键 词：油气聚集 濮卫洼陷 东濮凹陷 

分 类 号：TE122.2[石油与天然气工程—油气勘探]