安塞油田坪北区储层裂缝在注水开发中的作用  

The Role of Reservoir Crevice in Water-injection Development in Pingbei Area of Ansai Oilfield

作　　者：李民勇[1] 

机构地区：[1]中国地质大学,湖北武汉430074

出　　处：《江汉石油职工大学学报》2006年第4期17-20,共4页Journal of Jianghan Petroleum University of Staff and Workers

摘　　要：安塞油田坪北区为低渗透裂缝性油藏,多项研究表明微裂缝在安塞油田坪北区C4+52、C6油藏中是客观存在的,并且具有一定的规律性。生产动态表明油层存在双重孔隙介质,利用油藏裂缝特征,采用沿裂缝方向布井、在开发过程中加密调整注水开发井网、开展不稳定注水、沿裂缝方向强化注水、暂堵压裂均取得较好的注水开发效果。The Pingbei Area of Ansai Oilfield is a low permeability reservoir with crevice. A number of researches indicated that the micro-crevices exist objectively in the C4＋52 and C6 reservoirs with ,some regularity. The production activities show that some double porosity systems exist in oil-layer. By well spacing along the crevice location according to the crevice characteristics, infilling ＆adjusting ,some water-injection development patterns, injecting water unstably, strengthening water-injection along the crevice location and temporary shielding fracturing in the course of development, a better effect has been achieved.

关 键 词：安塞油田坪北区 裂缝 特低渗透油藏 加密调整 不稳定注水 强化注水 暂堵压裂 

分 类 号：TE13[石油与天然气工程—油气勘探] TE34