Patent ID: 11899157
Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  E | IPC G

Claim 0:
1. A method of predicting electromagnetic properties of drilling mud and a formation, the method comprising:
configuring a logging tool to i) apply an alternating voltage of multiple frequencies to a sensor electrode that injects current into a measurement zone disposed adjacent the sensor electrode, wherein the measurement zone includes the drilling mud and the formation, and ii) measure values of the current injected into the measurement zone at the multiple frequencies;
processing the measured values of the current at the multiple frequencies to determine complex impedances for the sensor electrode at the multiple frequencies;
generating input data based on the complex impedances for the sensor electrode at the multiple frequencies;
supplying the input data to a system of artificial neural networks (ANNs) that is configured to predict and output the electromagnetic properties of the drilling mud and the formation within the measurement zone based on the input data, wherein the system of ANNs employs a cascaded architecture of multiple ANNs; and
generating a borehole image over varying azimuth and depth using the electromagnetic properties.