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本文针对存在异常渗流通道的注水井进行常规调剖后,存在注水井压力抬升幅度小、连通油井受效差、有效期短的问题,通过优化封堵药剂体系与注入工艺有效实现对注水井异常渗流通道的封堵。试验选取了低渗透A油田C区块3口水井作为试验井,试验后平均注水压力抬升1.4MPa,连通油井累计增油590t,吸水剖面显示,高吸水层得到有效控制,试验结果验证了所优化的封堵药剂与注入工艺具有封堵异常渗流通道的可行性。
In this paper, the conventional injection wells with abnormal seepage channels have some problems, such as the pressure rise of injection wells is small, the efficiency of connected oil wells is poor, and the effective period is short. By optimizing the system and injection technology, Channel closure. Three wells in block C of low permeability A oilfield were chosen as test wells. After the test, the average water injection pressure was increased by 1.4 MPa and the cumulative oil flow was increased by 590 tons. The water absorption profile showed that the superabsorbent layer was effectively controlled. The experimental results validated the optimized The blocking agent and injection process have the feasibility of blocking the abnormal percolation channel.