THE LATERAL WAVE PROPAGATION IN ELECTROMAGNE- TIC WAVE PROPAGATION LOG
WU XIN-BAO PAN WEI-YAN '(China Research Institute of Radiowave Propagation, Xlnxiang 453003)
The lateral wave is very important in EPT log. In this paper, the simple and accurate formulas for the lateral wave are given by using iterative method. We study the effect of Mud-cake on the lateral wave and the propagation rule of the lateral wave. We also discuss the election of the frequency and the source distance, and discuss how to improve the interpretation of EPT logs.