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随着油田化学驱油技术的应用推广,油田采出水中普遍出现聚合物,现有的采出水深度处理工艺难以满足深度水质指标,而三次采油(简称三采,包括聚合物驱和三元复合驱)井网和加密井网对深度水的需求不断增多,导致“三采产水过剩、深度水源不足”的矛盾日益突出。分析了杏北油田开发现状及水量平衡存在的问题,论述了油田开发后期水量平衡的基本规划思路,即,分阶段调水、分水质处理、同水质互用,对各油田含油采出水处理系统的优化运行具有一定的借鉴意义。
With the application and popularization of chemical flooding technology in the oilfield, polymers generally appear in the produced water of the oilfield, and the existing deep treatment of produced water is difficult to meet the requirements of deep water quality. However, the tertiary oil recovery (referred to as the third extraction, including polymer flooding and ternary compounding Driven) The demand for deep water from well patterns and encrypted well patterns has been increasing, resulting in an increasingly prominent contradiction between “excess production of the three production wells and insufficient water supply”. This paper analyzes the current situation of the exploitation and the existing problems of water balance in Xingbei Oilfield. The basic planning ideas of water balance in the late stage of oilfield development are discussed. That is, water diversion, sub-water quality and water quality are interchanged in stages. The optimal operation of a certain reference.