双河油田Ⅳ5-11层系二元复合驱合理井网井距研究  

Research on Rational Well Pattern and Space for Ⅳ5-11 Strata of Shuanghe Oilfield

作　　者：张连锋[1] 郭欢欢[2] 姜建伟[1] 李洪生[1] 董文龙[3] 胡书奎[1] 张海锋[1] 

机构地区：[1]中石化河南油田分公司石油勘探开发研究院,河南南阳473132 [2]中石化河南石油勘探局测井公司,河南南阳473132 [3]中石化河南油田分公司第一采油厂,河南南阳473132

出　　处：《石油天然气学报》2010年第6期457-460,共4页Journal of Oil and Gas Technology

基　　金：中国石化河南石油勘探局2009年科研攻关项目"双河油田Ⅳ5-11层系井网重组及复合驱提高采收率技术"(2009-040)部分研究成果

摘　　要：油田进入高含水开发后期,聚/表二元复合驱技术是进一步提高采收率的有效途径,合理的井网井距是其成功的关键。在双河油田Ⅳ5-11层系实际地质条件下,利用数值模拟方法研究了四点法面积井网、五点法面积井网、九点法面积井网、排状井网对二元复合驱的影响,结果表明五点法面积井网提高采收率的幅度最大。在考虑注入能力、采液能力及渗透率与注采井距关系、二元复合驱驱替液在不同井距下的流动速度、见效时间以及表面活性剂的有效作用距离的情况下,计算求得双河油田Ⅳ5-11层系二元复合驱合理注入速度为0.1～0.11PV/a,不同渗透率条件下的合理井距为170～283m,为Ⅳ5-11层系井网部署提供了重要依据。Surfactant/polymer combinational flooding system was found to be one of the effective ways to improve oil recovery when oilfields entered into the late development stage of high water-cut,and reasonable well pattern and spacing were the crucial factors of successful development.Under the actual geological conditions of Ⅳ5-11 Strata of Shuanghe Oilfield,by using numerical simulation,the effects of 4-spot pattern,5-spot pattern,9-spot pattern,row well pattern towards the surfactant/polymer combinational flooding system were analyzed.The analyses indicate that the 5-spot pattern was one of the effective increasing oil recovery.By taking the relation between injection capacity,production fluid capability,permeability and injection-production well spacing into consideration,as well as the flow velocity and the surfactant/polymer combinational flooding under different well spacings,and effective distance of surfactant,the rational injection velocity of Ⅳ5-11 Strata was calculated to be 0.1~0.11PV/a and the rational well spacing for different permeabilities was 170~283m,which provides significant guidance for well pattern deployment of Ⅳ5-11 Strata in Shuanghe Oilfield.

关 键 词：二元复合驱 数值模拟 井距 面积井网 双河油田 

分 类 号：TE324[石油与天然气工程—油气田开发工程]