非均质岩心调堵结合技术室内实验  

Laboratory study on combination technology of profile control and water plugging on heterogeneous core

作　　者：王嘉晨[1,2,3] 侯吉瑞[1,2,3] 赵凤兰[1,2,3] 冷光耀[1,2,3] 曹淑君[1,2,3] 王俊华[4] 

机构地区：[1]中国石油大学(北京)提高采收率研究院,北京102249 [2]中国石油三次采油重点实验室低渗油田提高采收率应用基础理论研究室,北京102249 [3]石油工程教育部重点实验室,北京102249 [4]中国石化中原油田分公司采油四厂,河南濮阳457001

出　　处：《油气地质与采收率》2014年第6期99-101,106,共4页Petroleum Geology and Recovery Efficiency

基　　金：国家科技重大专项"油田开采后期提高采收率技术"(2011ZX05009-004)

摘　　要：为了研究调剖堵水顺序和调剖堵水时机对提高非均质岩心采收率的影响,选择1种堵水剂和强度不同的2种调剖剂作为研究对象,利用双层非均质岩心模型物理模拟实验,设定3种不同的调剖堵水顺序和7种不同的调剖堵水时机。研究结果表明,先调剖后堵水起到了很好的调堵效果,与先堵水后调剖以及同时调剖堵水相比,采收率增加幅度更大,强胶体系最终采收率为69.26%,弱胶体系最终采收率为64.94%。研究调剖堵水时机时发现,调剖与堵水间隔时间越长降水增油效果越好,且调剖堵水结合的最佳时机为调剖后水驱至0.5倍孔隙体积进行堵水,继续增加水驱时间采收率不再增加。The paper takes one water plugging agent and two different viscosity of profile control agents as research objects. Through the physical simulation experiment on two layers of heterogeneous core, the influence of the sequences and times of profile control and water plugging for enhancing oil recovery were studied. The research results show that: compared with other sequences, profile control before water plugging has better effect, and recovery efficiency has a significant increase. The ultimate recovery of strong gel was 68.5%,and the weak one was 65%. Research on time shows that the longer the interval between profile control and water plugging, the better the effect of oil displacement, and the best interval is 0.5 PV water driving.

关 键 词：非均质岩心模型 物理模拟实验 调剖堵水顺序 调剖堵水时机 采收率 

分 类 号：TE313.7[石油与天然气工程—油气田开发工程]