朝阳沟油田朝55区块井网加密研究

Research on well patterns thickening of Block Chao 55 in Chaoyanggou Oilfield

殷代印 张 强

大庆石油学院提高油气采收率教育部重点实验室，黑龙江 大庆 163318

MOE Key Laboratory of EOR, Daqing Petroleum Institute, Daqing 163318, China

井网加密是油田开发调整过程中最重要的措施之一，所采用的井网是否合理直接影响到最终采收率的大小。从朝阳沟油田朝55区块加密前实际生产状况出发，分析了其开发效果差的根本原因，为得出适合本区块的加密方式，首先计算出满足低渗透油藏开发纲要的合理井数比，在此基础上应用数值模拟方法设计出不同的加密方案，结合现场实际加密效果，最后得出“3，2，1”加密为理想加密方式的结论。该结论对朝阳沟油田其他区块的加密工作有指导意义。

Well patterns thickening is one of the most important measures in oil field development adjustment process. The rationality of well patterns has a directly impact on ultimate recovery factor. Based on the actual production situation before infilling in Block Chao 55 of Chaoyanggou Oilfield, the reasons leading to poor development effects are analyzed in this paper. In order to get the reasonable well patterns thickening methods, the reasonable injection-producing well ratio is calculated to meet the development of
low-permeability reservoir. The different well patterns thickening schemes are designed on the basis of numerical simulation. Combined with the practical effects of field application, the paper gains the conclusion that the "3, 2, 1" infilling method is the favorable infilling one for well patterns thickening. It has a guiding significance to well pattern thickening for other blocks of Chaoyanggou Oilfield.