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July 26, 2026ProcessesOpen Access

Rheological Properties and Prediction Method for Oil-Based Drilling Fluids Under High-Temperature and High-Pressure Conditions

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Authors

MLMingsheng LiuChina University of Petroleum, BeijingYXY L XuChina University of Petroleum, BeijingQXQi XiaHarbin University of Science and Technology

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Overview

Randomized trial evaluates the rheological properties of oil-based drilling fluids, highlighting improved prediction methods under extreme conditions.

Key Points

  • This study aims to explore the rheological behavior of oil-based drilling fluids under high-temperature and high-pressure conditions for enhanced prediction accuracy.
  • Investigated rheological behavior of three oil-based drilling fluids at 60–160 °C and 60–140 MPa conditions.
  • Tested 360 data points across different rotational speeds for model evaluation.
  • Developed and validated new rheological models, focusing on Herschel–Bulkley parameters.
  • The Herschel–Bulkley model achieved an average relative error of 2.64% in shear stress prediction.
  • Produced average prediction accuracies of 81.40% for yield stress, 97.90% for flow index, and 87.05% for consistency coefficient.
  • Demonstrated that density significantly impacts yield stress and consistency coefficient, while temperature and pressure minimally affect flow index.

Cite This Study

Liu et al. (2026) studied this question.

synapsesocial.com/papers/6a65a890d3aea3239cd78d54https://doi.org/10.3390/pr14152387
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  5. 5A Machine Learning Model for HTHP Shear-Stress Prediction of Oil-Based Drilling Fluid Using Polynomial-Corrected RBF-CRM2026