新疆石油地质

›› 2013, Vol. 34 ›› Issue (5): 1-1.

• 论文 •    

一种预测水驱油田体积波及系数的新方法

唐 林，郭 肖，邓钦月，卢 婧，冷润熙   

  1. (西南石油大学 油气藏地质及开发工程国家重点实验室,成都 610500)
  • 出版日期:2019-01-01 发布日期:1905-07-13

A New Method for Prediction of Volumetric Sweep Efficiency in WaterDrive Oilfield

TANG Lin, GUO Xiao, DENG Qinyue, LU Jing, LENG Runxi   

  1. (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500,China)
  • Online:2019-01-01 Published:1905-07-13

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摘要： 为了准确、简便地预测水驱体积波及系数，根据水驱油田的水驱规律特征，在前人的研究基础上，从俞启泰水驱曲线出发，推导出了水驱体积波及系数与含水率新的关系式，分析了不同油水黏度比下水驱体积波及系数随含水率的变化关系，并通过实例对丙型水驱曲线、张金庆水驱曲线以及俞启泰水驱曲线3种水驱曲线进行对比。结果表明：当b由0.1到10变化时，Ev—fw关系曲线由凹型渐变为直线型，当含水率超过60%后，Ev随fw上升幅度增大；当含水率超过80%后，Ev随fw呈“上翘”式增长。而基于俞启泰水驱曲线的体积波及系数计算方法比张金庆水驱曲线和丙型水驱曲线适用范围更广，结果更精确。

Abstract: In order to accurately and simply predict volumetric sweep efficiency, based on the characteristics of water?drive oilfield and the previous studies, a new relationship between volumetric sweep efficiency (Ev) and water cut (fw) under the various oil?water viscosity ratios is proposed and analyzed using Yu’s water?drive curve. And then, the three types of water?drive curves such as Type?C curve, Zhang’scurve and Yu’s curve are correlated by case study. The results show that when b ranges from 0.1 to 10, the Ev?fw relationship curve gradually changes from concave type to linear type, and when the fw reaches over 60%, the Ev amplitude increases; when the fw reaches over 80%,Ev curve appears in upwarp?like increase with the fw curve. It is concluded that the calculation method for volumetric sweep efficiency based on Yu’s water drive curve is better than those based on the Type C and Zhang’s water drive curves in application and precision

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