陕甘宁盆地靖安地区区域裂缝及对开发的影响  

Distribution of Regional Fractures in Jingan Area, Shaanganning Basin

作　　者：曾联波[1,2] 郑聪斌[1,2] 

机构地区：[1]北京昌平石油大学地球科学系 [2]长庆油田研究院

出　　处：《西安石油学院学报（自然科学版）》1999年第1期16-18,共3页Journal of Xi'an Petroleum Institute（Natural Science Edition)

摘　　要：通过露头、古地磁定向岩心与薄片及有限元三维数值模拟研究，靖安地区主要发育有东西向和南北向两组区域裂缝，局部地段还分布有北东向和北西向裂缝．裂缝规模大，产状稳定，延伸长，构成较好的网络系统．裂缝的分布受岩层控制，垂直于层面，其间距呈正态函数分布，并与岩层厚度呈较好的线性相关关系．由于受岩性、层厚等因素的影响，使裂缝在纵向上的发育程度有较大差异，其中以长６层裂缝最发育．裂缝系统控制了该区低渗透储集层的渗透性，影响着开发井网的布置、水平井设计、压裂改造方案设计以及注水管理．According to the study of outcrops, paleomagnetism oriented cores and thin sections, and the result of finite element 3D numerical simulation, it is known that there are two sets of main regional fractures in westestern and northsouthern directions seperately, the other two sets of fractures in eastnorthern and westnorthern directions only distributed in partial region. They are big, steady and long, and make up reasonably distributing network. The fractures are controlled by rock strata, and are perpendicular to stratification planes. The fracture spacings are log-normal distribution, and changes linearly with stratum thickness.There is a great difference in logitudinal development of the fractures, which is influenced by the factors of lithology, stratum thickness, and so on. The fractures of Cheng 6 stratum developed best. The fractures control the permeability of reservoirs in this area, and influence well pattern arrangement, horizontal well design, fracturing plan and water flooding management.

关 键 词：陕甘宁盆地 区域裂缝 靖安 裂隙油气藏 油田开发 

分 类 号：TE344[石油与天然气工程—油气田开发工程]