CO_(2)驱油过程中输油管道的冲蚀特性  

Erosion Characteristics of Oil Pipeline During CO_(2) Flooding Process

作　　者：俞航 常爱莲 黄本清 邵明鲁 YU Hang;CHANG Ailian;HUANG Benqing;SHAO Minglu(School of Mechanical Engineering and Rail Transit,Changzhou University,Changzhou 213164,China;Jiangsu Key Laboratory of Green Process Equipment,Changzhou University,Changzhou 213164,China;School of Petroleum and Natural Gas Engineering,Changzhou University,Changzhou 213164,China)

机构地区：[1]常州大学机械工程与轨道交通学院,常州213164 [2]江苏省能源动力高端装备工程研究中心(常州大学),常州213164 [3]常州大学石油与天然气工程学院,常州213164

出　　处：《腐蚀与防护》2025年第4期75-82,95,共9页Corrosion & Protection

基　　金：国家自然科学基金(12302509);江苏省自然科学青年基金(BK20220615,BK20220622);江苏省高等学校基础科学面上项目(22KJB130001)。

摘　　要：原油管道运输过程中掺杂的CO_(2)和砂粒会加重管壁的冲蚀破坏。针对管道冲蚀问题展开研究。基于计算流体动力学方法研究了弯曲角度、砂粒粒径以及流量等对管壁冲蚀特性的影响。结果表明:随着弯管弯曲角度的变化,冲蚀速率呈倒“U”形变化,当弯曲角度在90°左右时,壁面冲蚀速率最高;同时砂粒粒径以及流量与壁面冲蚀速率均呈现正相关。对管道直管与弯头连接段采取螺旋管道式串联处理,对壁面进行优化设计,可有效缓解壁面冲蚀程度,提高原油管道的安全性及输送效率。The addition of CO_(2) and sand particles during the transportation of crude oil pipelines can exacerbate the erosion damage to the pipe wall.A study was conducted on the issue of pipeline erosion and wear,and the effects of bending angle,sand particle size,and flow rate on the erosion characteristics of pipe walls were numerically investigated based on computational fluid dynamics methods.The results show that with the change of bending angle of the bent pipe,the erosion rate changed in an inverted“U”shape.When the bending angle was around 90°,the wall erosion rate was the highest.At the same time,there was a positive correlation between sand particle size,flow rate,and wall erosion rate.Adopting a spiral pipe series connection treatment for the connection section between the straight pipe and the elbow of the pipeline,and optimizing the design of the wall surface,could effectively reduce the degree of wall erosion and improve the safety and transportation efficiency of the crude oil pipeline.Reaches a highest value when the bending angle is roughly 90°.Meanwhile sand particles size and flow rate are positively correlated with wall erosion rate.Additionally,a wall optimization design is employed,and the spiral pipe series processing is adopted for the connection section of the straight pipe and the elbow,which can effectively reduce the erosion of the wall and provide a theoretical guidance for safe and efficient transportation of crude oil pipeline.

关 键 词：CO_(2) 多相流 冲蚀速率 优化壁面 管道 

分 类 号：TG174.4[金属学及工艺—金属表面处理]