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电位场在地表的变化反映了地下不同介质层的电阻率变化特性,因此本文采用基于电位法下的监测技术对地表电位进行测量,采用基于有限差分方法和光滑约束最小构造方法对地表的电位值进行数据的反演处理,得到注水驱油层的电阻率分布变化,从而对注水油田进行直观可视的监测,较为准确地推断出含油区域.为了验证反演数据的准确度,通过实际工程应用将数据处理的电位等值线示意图、储层电阻率等值线示意图以及储层饱和度等值线示意图做了对应比较,得到理想的结果,具备实际利用及参考价值.
The change of the electric potential field on the ground surface reflects the change of the resistivity of different media layers in the underground. Therefore, this paper adopts the monitoring technique based on the potential method to measure the surface potential and adopts the finite difference method and the minimum bound method of the smooth constraint to measure the surface potential The inversion of the data is carried out to get the change of the resistivity distribution of the flooding oil layer, so as to visually and visually monitor the flooding oilfield and infer the oil-bearing region more accurately.In order to verify the accuracy of the inversion data, Data processing potential contour diagram, reservoir resistivity contour map and reservoir saturation contour map made a corresponding comparison, get the desired result, with the actual use and reference value.