Hybrid amplitude adjustment algorithm for resistivity logging tools

Halliburton Energy Services Inc. (2017) Hybrid amplitude adjustment algorithm for resistivity logging tools. .

Abstract

In one aspect, a resistivity logging tool for a fluid-producing formation if provided. The resistivity logging tool includes at least one transmitter device connected to at least one excitation electrode, multiple receiver devices respectively connected to monitoring electrodes, and a controller. The transmitter can inject an excitation current into the formation via the excitation electrode. Each receiver device can determine a respective voltage level induced by the excitation current. The controller can determine whether a voltage level measured by at least one receiver device is within a specified range. Based on the measured voltage level, the controller can select a global amplitude adjustment algorithm for modifying excitation currents or a localized amplitude adjustment algorithm for modifying one or more gains of one or more receiver devices. The controller can modify the excitation current or gains by executing the selected algorithm.

• Item Type: Patents
• Additional Information: Publication Number: WO2015102583A1. Patent Number: US9772424B2.
• Status: Published
• Glasgow Author(s) Enlighten ID: Cao, Dr Qi
• Authors: Cao, Q., Lim, C. W., Quintero, A., and Schaecher, W. J.
• College/School: College of Science and Engineering > School of Computing Science