Temperature correction of magnetic resonance data

US10302801B2 · kind B2 · utility

Assignee

• Baker Hughes, a GE company, LLC · US

Inventors

• Radu Coman · Hannover, DE
• Holger Tietjen · Hannover, DE

Key dates

• Filing date: Apr 27, 2016
• Grant date: May 28, 2019
• Expiry date: Jan 18, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G01V3/32
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An apparatus for estimating properties of an earth formation includes a nuclear magnetic resonance (NMR) measurement device including a magnet assembly, at least one transmitting assembly configured to generate an oscillating magnetic field in the formation, and a receiver configured to detect NMR signals from at least a sensitive volume in the formation. The apparatus also includes a processing device configured to receive NMR data corresponding to the detected NMR signals. The processing device is configured to perform combining a geometrical factor of the NMR logging tool with a temperature distribution, the temperature distribution indicating a temperature value at at least one location in the sensitive volume of the formation, correcting the NMR data based on the temperature value, estimating a property of the formation based on the corrected NMR data, and performing one or more aspects of an energy industry operation based on the estimated property.