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随钻电磁波电阻率测井的影响因素包括井眼、仪器偏心、井轴与地层相对夹角、各向异性、围岩、电介质和泥浆侵入等。通过不同的模型可以研究随钻电磁波电阻率测井的响应,对于随钻电磁波电阻率测井的正反演模拟与解释都有重要的指导意义,本文以贝光休斯MPR仪器为模拟仪器,介绍了利用XFDTD方法模拟井下情况所得到的这些环境因素影响的实验结果。
Factors influencing the electromagnetic wave resistivity logging while drilling include wellbore, instrument eccentricity, relative angle between well shaft and formation, anisotropy, surrounding rock, dielectric and mud invasion. Different models can be used to study the response of electromagnetic wave resistivity logging while drilling, which has important guiding significance for the forward and inverse modeling and interpretation of the electromagnetic wave resistivity logging while drilling. In this paper, the Beiguang Huguang MPR instrument is used as the simulation instrument, The experimental results of using XFDTD to simulate the influence of these environmental factors in the downhole environment are introduced.