用生产数据计算油藏相对渗透率曲线

CALCULATION METHOD OF RELATIVE PERMEABILITY CURVE FROM PRODUCTION DATA

提出了一种应用含水率数据计算油藏相对渗透率曲线的新方法,该方法反映了实际油田的生产动态。油田开发到中后期,一般很难通过实验获得目前的相对渗透率曲线,而该方法获得的相对渗透率曲线可反映目前状况,为数值模拟提供准确相对渗透率曲线。这种方法能克服实验测试带来的局限性,不仅能获得相对渗透率比值,还能获得相对渗透率值,具有一定的代表性。在此基础上,还可以对油田的开发指标进行预测,对开发效果进行评价。

A calculation method of relative permeability from water cut of production data is presented in this paper.The method reflects practical oil field production performance,especially field is developed to middle or later period.The relative permeability curves are difficult to be acquisited through laboratory experiments.Whereas permeability curve acquired through the method presented here can reflect current condition,and exact permeability can be offered to numerical simulation.This method can overcome limitations of laboratory experiments.Both relative permeability ratio and relative permeability value can be obtained by this method.At this point,it can be used to predict the performance of the reservoir and evaluate exploitation effectiveness.