复杂断块油田微构造成因特征分析

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.

Analysis on Microstructure Characteristic of Complicated Fault Oilfield

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 microstruc...