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针对喇嘛甸油田开发油气缓冲区时易形成油气窜流影响开发效果的问题,提出了在油气边界处建立隔障分隔油气区的开发方式。根据形成隔障所需聚合物溶液量和时间的计算公式,结合数值模拟研究结果,确定了隔障井的合理布井位置、井距、注入量、注入压力等技术参数,形成了确保隔障形成时间短且所用溶液量少的技术方法。通过隔障的封闭性和稳定性评价、隔障建立所用聚合物溶液量和时间的评价及隔障对提高原油采收率贡献情况的评价,形成了对隔障建立情况的综合评价方法。
In view of the problem that the formation of oil and gas buffer zones in Lamadian Oilfield is likely to influence the development effect of oil and gas channeling influence, a development mode of establishing barrier-separated oil and gas zones at the boundary of oil and gas is proposed. According to the calculation formula of polymer solution volume and time required to form barrier, combined with the numerical simulation results, the technical parameters of well location, well spacing, injection volume and injection pressure were determined, The formation of a short time and the amount of solution used less technical methods. Through the assessment of barrier sealability and stability, the evaluation of the volume and time of polymer solution used for barrier building and the contribution of barrier to the improvement of crude oil recovery were established, and a comprehensive evaluation method of barrier establishment was formed.