A New Integrated Downhole Tool for Primary Logging in the Open Hole of Wells in Infiltration-Type Uranium Deposits

Abstract

The article shows the relevance of integrating the main open hole logging methods for wells constructed during exploration and development of infiltration type uranium deposits. The article describes a new integrated downhole tool developed by the authors for simultaneous gamma, electrical, and directional logging. The downhole tool is based on a modular scheme; includes standard, modernized, and new functional logging units; and effectively combines analog, pulse, and digital output data formats. The modular architecture of the downhole tool allows open hole logging both individually, with separate methods and modules, and simultaneously in one common assembly. The results of field tests of the new tool at one of Russia’s infiltration deposits in the Trans-Ural uranium-ore district are presented, convincingly demonstrating the high accuracy of measurements and full compliance of the obtained logging data with regulatory instructions. Use of a new complex tool during geophysical surveys in the open holes of wells constructed during prospecting for, exploration, and development of uranium and ore deposits will increase the efficiency of logging operations, lower their cost, and reduce the forced downtime of drilling crews.