感应测井趋肤效应校正的迭代方法

提出了利用视电导率的实分量和虚分量(或只利用实分量)对双线圈系和复合线圈系感应测井仪器进行趋肤效应校正的迭代方法.这种方法通过对传播系数进行迭代实现对感应测井的趋肤效应校正,具有方法简单、易于编程、精度高的优点,所得到的迭代公式可通用于各种频率和线圈系结构,灵活方便.该方法在常见地层电导率范围内均收敛.数值计算结果表明了使用迭代方法进行趋肤效应校正的必要性和有效性.

The Iterative Correction Method of Skin Effect for Induction Logging

An iterative correction method of skin effect for dual-coil and composite-coil induction logging tools is proposed using both the real and the imaginary component (or only the real component) of the apparent conductivity. The iterative correction is achieved by the iteration of the propagation constant, and is simple and easy in programming and has high precision. The formula obtained from the iterative correction method can be applied universally to different frequencies and different structures of the coil system with flexibility and convenience. The method converges within the common range of the earth conductivity. Numerical results indicate the necessity and effectiveness of the iterative correction method.