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本文从大庆油田高含水期开采特点提出了当前大庆油田转变开采方式的必要性,结合油田转抽后井底流压降到饱和压力以下的特点,从理论及实践上探讨了井底压力低于饱和压力后采油指数变化规律,提出了转抽后采油指数变化的经验预测方法。同时通过大量转抽井资料论述了转抽后由于减少了层间矛盾,对转抽后的压力界限提出了分析方法,并进行了初步探讨,本文还对整体转抽的效果进行了分析。
Based on the characteristics of high-water-cut mining in Daqing Oilfield, the paper presents the necessity of transforming mining method in Daqing Oilfield. Combining the characteristics of downhole flow pressure below saturation pressure after pumping in oil field, this paper discusses the theory that the bottom hole pressure is lower than saturation Pressure after oil production index changes, put forward after the pumping pumping oil index changes empirical prediction method. At the same time, through analyzing a large number of wells, this paper discusses the method of analyzing the pressure limit after the pumping is reduced because of reducing the contradiction between layers after the pumping, and makes a preliminary discussion. The article also analyzes the effect of the overall pumping.