Method and apparatus for processing electromagnetic response data

摘要

A method is provided for processing electromagnetic response data from a region of the earth. The method may be used for detecting subterranean conductivity anomalies, such as high-resistivity hydrocarbon reservoirs. Separate transverse electric response data and transverse magnetic response data are provided (15-23). Depth migration (24) is performed on the transverse electric and magnetic data using different depth migration extrapolation operators. The operators differ from each other in accordance with different properties of transverse electric and magnetic modes in an electromagnetically anisotropic medium.