侧钻井与套管井电阻率测井在剩余油研究中的应用

An application of resistivity log in side-tracked and cased holes to the research of residual oil

在由岩心分析实验结果做出的油田开发期岩电相驱图的基础上 ,依据阿尔奇公式建立了利用侧钻井与套管井电阻率测井资料研究剩余油的方法。该方法已在南海东部西江油田生产中得到了应用。侧钻井与套管井电阻率测井资料的有效利用 ,可以在油田开发过程中快捷、方便地求出储层剩余油饱和度 ,进而求出油层衰竭指数 ,并据此对油层水淹程度及时作出评价 ,其用于随钻测井评价可以较大幅度地提高经济效益。

Based on the rock-resistivity driving diagram for oilfield development from core analyses, a method to research residual oil by resistivity log in side-tracked and cased holes has been established according to Archie's equation, and applied to Xijiang oilfield in the eastern South China Sea. By effectively using resistivity log data from side-tracked and cased holes, the residual oil saturation of reservoir can be determined quickly and conveniently during oilfield development, and then the decline index of reservoir can be calculated, by which the watered-flooding of reservoir can be evaluated timely. If used in logging while drilling, these data may enhanced economic effects considerably.