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A Temperature Compensation Method for the Bit Parameter Recorder in High-Temperature Deep Wells Based on
Hengshuo Zhang1, Zhenhuan Yi2, Zhenbao Li3
1National Research Center of Pumps, Jiangsu University, Zhenjiang 212013, China.
Sensors (Basel, Switzerland)
|March 28, 2026
Summary
This study introduces a novel temperature compensation method for Measurement While Drilling (MWD) tools. The technique significantly enhances the accuracy of weight on bit (WOB) and torque measurements in high-temperature environments.
Area of Science:
- Geosciences
- Mechanical Engineering
- Materials Science
Background:
- Measurement While Drilling (MWD) tools are crucial for deep well drilling.
- High-temperature and high-pressure (HTHP) conditions cause structural deformation, affecting sensor accuracy for weight on bit (WOB) and working torque (WT).
Purpose of the Study:
- To develop and validate a temperature compensation method for MWD tools operating in HTHP environments.
- To improve the accuracy of WOB and WT measurements by mitigating thermal expansion interference.
Main Methods:
- Thermo-mechanical coupling simulation to establish relationships between loads (WT, WOB, temperature, make-up torque) and strain.
- Finite Element Analysis (FEA) to model strain at critical locations.
- Surface calibration experiments to verify strain gauge signal linearity.
- Development of an inversion-based compensation algorithm using downhole sensor data.
Main Results:
- Quantitative relationships between loads, temperature, and strain were established.
- A strong linear correlation between simulated strain and strain gauge voltage signals was confirmed.
- The developed algorithm effectively isolated thermal deformation interference.
- The compensation method reduced relative errors for WOB and torque measurements to within 5%.
Conclusions:
- The proposed temperature compensation method significantly enhances the accuracy of MWD bit parameter recorders in high-temperature conditions.
- This provides a reliable solution for precise WOB and torque measurements in deep, high-temperature wells.
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