南阳凹陷断块油田周期注水提高水驱效率技术应用  

Techniques for Enhanced Oil Recovery of Cyclic Waterflooding in Fault-block Oilfiel of Nanyang Depression

作　　者：康玲珍[1] 楚龙超[1] 熊艳艳[1] 石莉莉[1] 赵丽萍[1] 

机构地区：[1]中石化河南油田分公司第一采油厂,河南桐柏474780

出　　处：《石油天然气学报》2011年第6期129-131,10,共3页Journal of Oil and Gas Technology

摘　　要：南阳凹陷断块油田断裂系统复杂,局部区域断层发育,进入开发后期,储层物性差异大,非均质性严重,导致其水驱油效率不均衡,影响开发效果,因此,考虑采用周期注水来改变并提高南阳凹陷断块油田水驱油效率;周期注水技术主要是通过油水交渗效应、毛管压力作用,增加注水波及体积,从而提高水驱采收率的技术。根据该技术的作用机理并针对几个井组进行试验,试验表明:南阳凹陷断块油田适合通过周期注水来提高水驱效率。In the fault-block reservoirs in Nanyang Depression,the fault-break system was complex,fault zones were developed in local areas,after it was at the late stage of oilfield development,reservoir physical property was highly different,heterogeneity was serious,uneven oil displacement was induced,by which the oilfield development effect was influenced.Therefore it was considered that cyclic waterflooding was used to change and enhance the oil drive efficiency of the fault-block oilfield.The technique is used to enhance oil recovery through alternating effect of oil and gas,capillary forces and improving the sweeping volume.Based on its mechanism,it is used in several well groups,the result indicates that the technique is suitable for the fault-block reservoirs in Nanyang Depression.

关 键 词：周期注水 机理 井组筛选 效果 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程]