中原油田老井措施边际效益变化规律研究

RESEARCH ON THE VARIATION LAWS OF MARGINAL BENEFIT OF OLD WELL MEASURES

对中原油田投入开发以来的老井措施效益进行了评价，研究了老井措施的边际效益变化规律：随着油田开发的深入，单井增油效果越来越差，其中在低含水期递减幅度大，进入高含水期后递减有所减缓，但趋势还是递减的；相反，随着综合含水的上升，措施的边际成本是指数递增趋势上升，在中低含水期，上升幅度较小，进入高含水期后，上升幅度越来越大。并对优化措施结构进行了探讨。

This paper appraises the benefits achieved by implementing measures in old wells since come on stream of Zhongyuan Field, studies the variation laws of marginal benefit of old well measures, that is, with the uprising of the combined water cut, the marginal cost of the measures rises in the form of index. At the stage of mid-low water cut, it rises in a small scope, while entering the high water cut stage, it rises in a more and more large scope. In addition. this paper probes into the optimization of the measure structure. subject heading: Zhongyuan Oil Field measure marginal cost water cut change research