摘要
某区块属于低渗透砂岩油藏,裂缝对储层的物性有重要影响。利用岩心观察、测井分析和生产动态分析等方法,对裂缝发育特征展开系统研究。结果表明:该区块主要发育构造成因的高角度剪切裂缝;工区内发育东西向、南北向、北西向和北东向4组裂缝,受现今地应力影响,东西向裂缝的地下开度大,是该区的主要渗流方向;裂缝发育程度主要受岩性、岩层厚度、断层等因素的影响;裂缝是影响注气开发早期气体突破和开发效果的重要因素。
One block belongs to low permeability sandstone reservoir. Fractures have important eftecls on the physical property of reservoir. Based on the detailed deseriplion and observation of drilling cores, log interpretation and production performance analysis, the fracture developmenlharacteristics are studied systematically. Result shows that the shear fractures with high angle mainly develop in this block. In the work ara, there are four sets of fractures, which are in east-west, south-north, north-west east directions. Because ofthe influence on present stress field, Ihe east-west fractures have big aperture and are the main seepage channels in this area. The development degree of fractures is mainly controlled by the factors such as lithology, strata thickness and fault, etc. raeture is an imporianl factor to influence the development effect and the gas breakthrough at the early stage of gas injection.
出处
《断块油气田》
CAS
2013年第2期183-185,共3页
Fault-Block Oil & Gas Field
关键词
储层裂缝
发育特征
注气
影响
reserwfir tracure, development characteristics
gas injection
intluence
作者简介
王兆生，男．1983年生，助教，硕士，2011年毕业于巾闻石油大学（北京）地质工程专业，主要从事油气田开发地质方面的教学与研究工作。E-mail：zhaoshengw@126．com。
