论文部分内容阅读
本文在考虑电导率单轴各向异性和磁导率单轴各向异性介质的基础上,基于并矢格林函数的谱解形式推导了定向电磁波测井在仪器处于偏心位置时,对双单轴各向异性地层响应的伪解模型,并通过与数值模式匹配方法结果对比验证算法的精度.在此基础上,计算了定向电磁波测井在仪器偏心条件下的旋转测量结果,发现仪器对目标层方位和距离的判断受到仪器偏心的严重影响.此外,本文将旋转测量结果转化成耦合电压矩阵,分析各电压分量对各向异性地层的响应能力受到仪器偏心的影响规律.
Based on the uniaxial anisotropy of conductivity and uniaxial anisotropy of permeability, this paper derives the directional electromagnetic wave well logging in the eccentric position of the instrument based on the spectral solution of the dyadic Green’s function, Anisotropic formation response pseudo-solution model, and compared with the results of numerical pattern matching method to verify the accuracy of the algorithm.On the basis of this calculation, directional electromagnetic logging in the instrument under the eccentric conditions of the measurement results and found that the instrument on the target layer The determination of azimuth and distance is seriously affected by the eccentricity of the instrument.In addition, this paper converts the rotation measurement into a coupled voltage matrix and analyzes the influence of the voltage components on the anisotropic formation response by the instrument eccentricity.