某区块储层裂缝特征及其对注气开发的影响  

Characteristics of reservoir fracture and its influence on gas injection in one block

作　　者：王兆生[1] 唐小梅 陶娴娴[3] 张振国[1] 程子翔[4] 殷世艳[1] 杜敬国[1] 

机构地区：[1]河北联合大学矿业工程学院,河北唐山063009 [2]中国石油集团长城钻探工程有限公司测井技术研究院,北京100101 [3]中国石油新疆油田公司石西油田,新疆克拉玛依834000 [4]中国石油大学(北京)地球科学学院,北京102249

出　　处：《断块油气田》2013年第2期183-185,共3页Fault-Block Oil & Gas Field

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.

关 键 词：储层裂缝 发育特征 注气 影响 

分 类 号：TE321[石油与天然气工程—油气田开发工程]