3-D Finite Volume Modeling for LWD Azimuthal Propagation Resistivity Tool With Multiple Annular Antenna Recesses Using Coupled Potentials on Cylindrical Grids

The sensors of logging-while-drilling (LWD) azimuth propagation resistivity (APR) tool are usually installed in the annular antenna recesses filled with ferrite or other magnetic materials on the grooved metal mandrel. In this article, we will improve the 3-D finite volume method (3-D FVM) on cylindrical grids to solve the Helmholtz equations about coupled potentials for precise simulation of the ...