双侧向测井仪器响应的数值分析

在简化的二维全非均匀介质模型情况下，利用有限差分方法，编制了计算双侧井仪器响应的数值模拟程序。利用模拟程序，考查并分析了模型中各参数（侵入带半径、侵入带电阻率围岩电阻率、目的层厚度等）对仪器响应的数值分析，进行实际资料反演处理的初始参数选取，以提高反演的收敛速度。

Numerical Analysis On Dual-Lateral Log Response

Using FDM (Finite Difference Method), we developed a program that can calculate the respone of the dual-lateral log under the simplified 2D non-uniformity stratum model. By using the program, we analysised how the parameter of the model(radius of the invasion zone, resistivity of the invasion zone, resistivity of the wall rock, thickness of the destination formation,etc.) affect the response of the log. The log interpreter may acquire some useful asistant information through the analysis result when they proccess the actually log data. Moreover, experts can use the program as a base to analysis other complex model. Under the analysis result, we also can select proper initial parameter which will be used during the inversion of the actually log data. It will help to accelerate the speed of numerical convergence.