Evolution of electromagnetic logging while drilling tools (based on national and foreign literature)

Abstract

Important stages in the development of electromagnetic logging tools based on national and foreign literature are considered: adaptation of traditional tools to logging while drilling and modification of tools for logging while drilling in order to provide the possibility of carrying out deeper and azimuthal measurements. Applied algorithms for modeling and interpreting data are briefly described, examples of tools which are used while drilling oil wells, including the national tool, are given.