石油钻采工艺2026，Vol.48Issue(3)：361-369,9.DOI:10.13639/j.odpt.202508034
储气库P110注采管柱气-液-固三相冲蚀机理及临界冲蚀预测研究
Study on erosion mechanism and critical erosion prediction of gas-liquid-solid three phase in P110 injection-production string in UGSs
摘要
Abstract
In underground gas storage(UGS)facilities,prolonged cyclic injection-production operations and extreme peak-shaving conditions induce fatigue degradation of reservoir formations,intensifying sand production and resulting in gas-liquid-solid three-phase flow within the wellbore.This multiphase interaction complicates erosion mechanisms within the injection-production string.To address these challenges,under conditions of gas flow velocity of 17-50 m/s,sand content of 0.000 1%-0.02%,and liquid holdup of 0.001%-0.01%,erosion experiments were conducted utilizing a gas-liquid-solid three-phase visual pipe flow erosion apparatus,with P110 carbon steel injection-production string specimens subjected to annular flow conditions incorporating circumferential erosion distribution analysis.The erosion rate was measured using weight-loss method and analyzed combining with microscopic morphology observation.These findings indicate that the relationship between gas flow velocity and erosion rate exhibits exponential trend,and that between sand content and erosion rate follows logarithmic trend,and that between liquid holdup and erosion rate can be described by binomial pattern.The chart of critical erosion coefficient under complicated operation conditions was plotted and a gas-liquid-solid three-phase critical erosion prediction model for P110 injection-production string was established by characterizing key factors such as sand content and liquid holdup.A comparison of the experimental actual values with the predicted values revealed a prediction error of 6.52%,which is significantly lower than the existing API RP 14E model under gas-liquid-solid three-phase operating conditions.In conclusion,the gas-liquid-solid three-phase erosion prediction model developed in this study can provide theoretical support for determining the peak gas volume of individual wells and safe operation of injection-production string in UGS facilities.关键词
储气库/P110管柱/气-液-固三相流/冲蚀机理/临界冲蚀系数/冲蚀预测Key words
underground gas storage/P110 pipe string/gas-liquid-solid three-phase flow/erosion mechanism/critical erosion coefficient/erosion prediction分类
能源科技引用本文复制引用
谢川,邓兴旺,完颜祺琪,王云,罗孝雄,刘重伯,黄小亮..储气库P110注采管柱气-液-固三相冲蚀机理及临界冲蚀预测研究[J].石油钻采工艺,2026,48(3):361-369,9.基金项目
国家重大专项课题6"储气库高效运行与智能调峰技术研究"(编号:2025ZD1406806) （编号:2025ZD1406806）
中国石油天然气集团有限公司科学研究与技术开发项目"地下储气库基础理论与扩容新方法研究"(编号:2022DJ83) （编号:2022DJ83）
重庆市教委科学技术研究计划重大项目"水驱气藏型储气库多周期注采渗流机理及库容参数变化研究"(编号:KJZD-M202401501) （编号:KJZD-M202401501）
重庆市自然科学基金面上项目"复杂动力学事件作用下气液两相管流—嘴流耦合流动机理研究"(编号:2024NSCQ-MSX2610) （编号:2024NSCQ-MSX2610）
重庆市教育委员会科学技术研究顶目"深层页岩气井井筒气液两相管流—嘴流交互影响机制研究"(编号:KJQN202401525). （编号:KJQN202401525）
