复杂断块油田微构造成因特征分析  

Analysis on Microstructure Characteristic of Complicated Fault Oilfield

作　　者：王萍[1] 邵先杰[1] 马平华[1] 胡景双[1] 石磊[1] 

机构地区：[1]燕山大学,秦皇岛066004

出　　处：《重庆科技学院学报（自然科学版）》2009年第3期1-4,共4页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：中国石化集团总公司"十条龙"科技攻关项目"复杂断块油田提高采收率技术研究"部分研究成果(P98025)

摘　　要：目前国内东部大部分油田已经进入开发中后期,迫切需要查明地下剩余油分布情况,而微构造对剩余油分布起着重要的控制作用。以杨家坝复杂断块油田的资料为基础,分析了油田的微构造特征、成因及其对剩余油分布的控制作用。结果表明,杨家坝油田共发育四种正向微构造类型,断层的不均衡升降、断距大小以及走向的突变形成了一系列的微断鼻、微阶地构造,断层的交汇形成了微断块构造,沉积体厚度变化造成的差异压实作用形成了微鼻状构造,正向微构造的轴部、微高点及"墙角"式微断块的高部位都是剩余油富集区,是下一步挖潜的重点区段。At present, most of oil fields in eastern China have entered the mid-later development phase. There is an urgent need to clear the remaining oil distribution, and the microstructure dominates the remaining oil distribution significantly. Based upon the actual data of Yangjiaba Oilfield, which is a complicated faulted block, this paper analyses the feature, genesis of microstructure, and its controllability on remaining oil distribution. The results show that Yangjiaba Oilfield develops 4 types of positive microstructures in all. The unstable heave of fault, fault throw and saltative strike formed a series of micro-fault-nose and micro-step. Fault crossing formed the micro-block. And the differential compaction, resulted from depositional system thickness changes, formed micro-nose. The axial region of positive microstructure, micro-eminence and ＇comer＇ micro-block are remaining oil enrichment areas. So these areas could be considered as the prominent objective for further development of oilfield.

关 键 词：微构造 断层 剩余油 开发效果 杨家坝油田 

分 类 号：TE121[石油与天然气工程—油气勘探]