井-地电位成像技术在新疆油田五1区剩余油分布评价研究中的应用

介绍了井-地电位测量技术方法原理,重点分析了井-地电位测量数据成像处理方法和在新疆油田五1区的应用.利用该技术获得了4口井野外实测电位数据,用数值模拟和反演成像方法对实测数据进行了处理,得到了约2 km2范围内目的层电阻率和剩余油饱和度分布,分析了剩余油分布与注采效果的对应关系.研究结果表明,井-地电位测量资料的结果与其它监测资料吻合较好,剩余油平面分布和层间分布与数模结果相符,显示了井-地电位测量技术良好的应用前景.

Application of well- ground potential image in residual oil evaluation of Wu1 Block, Xingjiang Oilfield

This paper addresses the theory of well-ground potential measurement,with emphasis on data image processing and its application in Wu1 Block of Xinjiang Oilfield.The electric potentials of 4 wells were measured using this method,and processed through numerical simulation and inversion image method.The resistivity and the distribution of residual oil are obtained in about 2km~2 target zone.The relationship between residual oil distribution and injection-production response is analyzed.The result shows that well-ground potential measurement matches well with other monitoring data,and the areal and interlayer distribution of residual oil conform to that of numerical simulation,thus indicating a bright future of well-ground potential measurement method.