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针对大庆油田新研制的2MHz相位电阻率测井仪的特点,从电磁场基本理论出发推导出该种仪器的响应函数,计算了18种背景电阻率情况下的仪器响应函数,并建立了三种介电常数情形下的相位差与电阻率之间的转换关系,然后在深度域实现了该种测井曲线的自适应反褶积技术。经数值模拟及实际应用表明该处理技术不仅可以消除该仪器所测电阻率测井曲线的非对称性,而且可以大大提高测井曲线的纵向分层能力和精度,曲线的纵向分辨能力可以提高30%以上。
According to the characteristics of newly developed 2MHz phase resistivity logging tool in Daqing Oilfield, the response function of this kind of instrument is deduced from the basic theory of electromagnetic field, and the instrument response function of 18 kinds of background resistivity is calculated, The relationship between the phase difference and the resistivity in the case of the electric constant, and then the adaptive deconvolution technique of this kind of logging curve is realized in the depth domain. The numerical simulation and practical application show that the processing technology can not only eliminate the asymmetry of resistivity logging curve measured by the instrument, but also greatly improve the longitudinal stratification ability and precision of the logging curve. The vertical resolution of the curve can be improved by 30 %the above.