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This research aims to develop a real-time monitoring framework for gas intrusion during drilling using ultrasonic Doppler flow pattern analysis.

June 20, 2026Scientific ReportsOpen Access

Analysis of ultrasound Doppler flow pattern recognition method for drilling gas intrusion monitoring

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Randomized trial demonstrates real-time monitoring of gas intrusion in drilling operations, indicating enhanced safety measures.

This research aims to develop a real-time monitoring framework for gas intrusion during drilling using ultrasonic Doppler flow pattern analysis.
Developed an experimental gas intrusion simulation system with a drilling fluid circulation pool and ultrasound Doppler detection array.
Characterized gas–liquid flow patterns using gas-phase channel enumeration, Doppler frequency shift analysis, and flow pattern threshold calibration.
Conducted spatial-temporal analysis of gas–liquid phase redistribution by injecting controlled gas velocities at multiple axial positions.
Successfully demonstrated the method's ability to explain the dynamic evolution of two-phase flow under different regimes.
Achieved early detection of phase transitions, enhancing monitoring responsiveness.
Provided a non-invasive solution for high-risk gas kick monitoring in drilling operations.

Guo et al. (2026) studied this question.

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