石南31井区清水河组油藏深部调驱可行性研究

The Feasibility of the Profile Control and Displacement in Deep Reservoir of Qingshuihe Formation

介绍了石南31井区清水河组油藏地质特征及目前该区块注水开发过程中存在的问题,分析了该区块调驱效果不理想的原因,并提出采用不同强度凝胶体系及多段塞调驱工艺对该区块注采关系差的井组进行调驱治理;经室内物理模拟试验研究,确定了针对该油藏新研发调驱技术,能够提高该区块水驱波及体积,提高采收率。

The geologic characteristics of the oil reservoir of Wellblock Shinan 31 of Qingshuihe Formation and the problems existing in the process of waterflooding were mainly introduced,the reason of no ideal profile control and displacement in this area was analyzed,and the ways to solve these problems in the wells with poor injection-production relation by the gel systems of different strengths and multiple-slug technique of profile control and displacement were presented.According to the laboratory physical simulation experiments,it is proved that the new profile control and displacement technique can enlarge the waterflood swept area and then improve the oil recovery.