Case studies and modelling advances in producing conductivity-depth sections

Abstract

Since the development of a technique called Depth Image Processing (DIP) for direct transformation of multifold, step-response EM data into an imaged conductivity-depth section, a number of test and production surveys have been carried out. The results demonstrate the effectiveness and accuracy of the technique when the geological section is quasi-layered. Two recent case studies show very good correlation with available drill-hole results. Scale and computer model data have been generated for a number of conductive/resistive inhomogeneities in a layered earth, and this data base is being studied with a view to improving the ability of the DIP process to better image these non-layered features. The results from this will be reported at the conference.