Analysis of ultrasound Doppler flow pattern recognition method for drilling gas intrusion monitoring
Qingfeng Guo, Xiao Cai, Lijun Geng, Minglei Men, Pengfei Li, Qing Liu, Guolang Shen · 2026
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Description
Qingfeng Guo, with six colleagues, published a 2026 method for spotting gas entering a drilling well before it becomes dangerous. Gas intrusion can lead to blowouts, so the team used ultrasound Doppler sensors, which track flow by sound frequency shifts, around a wellbore pipe. Their framework counts gas channels, measures frequency shift ranges, and sets thresholds that separate flow patterns.
A laboratory system with a circulation pool and sensor array mimicked downhole conditions, injecting gas at speeds from 0.1 to 5 meters per second at several positions. The method followed how two-phase flow evolved and flagged pattern changes early. The authors present the non-invasive setup as a fast-responding option for gas kick monitoring.
Catalog record
| CREATOR | Qingfeng Guo, Xiao Cai, Lijun Geng, Minglei Men, Pengfei Li, Qing Liu, Guolang Shen |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 35265 |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |