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对于老油田,根据油田开发情况下对井周油气水分布规律的认识是非常重要的,本文介绍了一种利用地层电阻和电容变化来监测和寻找地层水的方法。进行井周电容电阻测量是将一个电极固定在井口,另一电极固定在各测点,给电极通一定的电压,测量井与测点之间的地层对电容和电阻的响应,根据电容、电阻的变化情况推断地下地层水的分布,为更好的识别地层流体性质及运移方向、油气地质储量评价提供更合理的依据。通过实验得知,可以通过测量地下地层中电容的变化情况来寻找地下水,进而研究地层中油气水的分布规律。
For the old oilfields, it is very important to know the laws of oil and gas distribution in the wellbore according to the development of the oilfield. In this paper, a method of monitoring and looking for formation water by using formation resistance and capacitance variation is introduced. Peripheral capacitance resistance measurement is one electrode fixed in the wellhead, the other electrode is fixed at each measuring point, to the electrode through a certain voltage, measured between the well and the measuring point of the formation capacitance and resistance of the response, according to capacitance, resistance Inferred the distribution of underground formation water, in order to better identify the formation fluid properties and migration direction, the evaluation of oil and gas geological reserves provide a more reasonable basis. Through experiments, we can find the groundwater by measuring the change of the capacitance in the underground stratum, and then study the distribution rules of the hydrocarbons in the stratum.