Modeling and Design of a Wideband Electromagnetic Logging Detector

Abstract

Abstract Due to the increasing complexity of oil and gas exploration objects, it is necessary to study the electrical properties of rocks in different frequency bands. At present, electrical properties of formation such as resistivity and phase change of electromagnetic propagation have attracted great attention in petroleum industry. In this paper, the influence of working frequency for tools, coil distance, mud in borehole, formation conductivity and other measuring conditions on detector signal is studied through numerical modeling, and the key circuit design technology of data acquisition of detector for wideband electromagnetic logging is preliminarily discussed. The modeling results can provide theoretical analysis for the design of parameters and data acquisition circuit of the detector, and lay a foundation for the accurate study of oil saturation of rock and the determination of reservoir fluid properties.