The electrical well logging is one of the high efficiency methods to explore deep mineral resources. The study of efficient and high-accuracy simulations is of important theoretical and practical significance. In this paper, 3D forward of electrical well logging was studied with different measurement methods (surface-borehole, borehole-surface, borehole-borehole), the one-dimensional none zero element row compressed storage method was used to store the coefficient matrix and, as a result, the memory requirements and computation were reduced. Using the ICCG method, the authors solved the linear system of equations. The solving efficiency was improved. The corresponding program was developed to achieve different measuring ways (surface-borehole, borehole-surface, borehole-borehole, tilted borehole) to study electrical well logging forward. The results of modeling have verified the correctness of the algorithm and the efficiency. The anomaly characteristics under various conditions are analyzed, which has laid the foundation for further inversion work.