Joint numerical inversion of resistivity logging data in vertical wells of the Imilorskoye field

Abstract

The paper considers an example of applying a joint 2D numerical inversion to the resistivity logs measured at complex sediments intervals of the Imilorskoye field. Complex structure of the sediments makes it difficult to use the traditional interpretation techniques for processing resistivity logs. This leads to the need to find new interpretation approaches, such as joint 2D inversion of resistivity logs obtained by different geophysical methods, which makes it possible to retrieve more reliable estimates of complex sediments electrophysical properties. Due to the lack of measurements taken by modern equipment in old wells, the proposed approach for improving the accuracy of the retrieved electrophysical parameters in this work is a joint 2D inversion of unfocused lateral logging sounding data, focused lateral and low-frequency induction logs.