页岩气地面管道20^(#)钢与碳化钨涂层弯头冲蚀性能研究  

Study on Erosion Performance of 20^(#)Steel and Tungsten Carbide Coated Elbow in Shale Gas Surface Pipeline

作　　者：张新发[1,2] 徐军[1,2] 陈世波 ZHANG Xinfa;XU Jun;CHEN Shibo(Drilling Engineering Technology Research Institute,Chuanqing Drilling Engineering Company Limited;National Engineering Laboratory for Exploration and Development of Low Permeability Oil and Gas Fields;Changqing Downhole Technology Operation Company,Chuanqing Drilling Engineering Company Limited)

机构地区：[1]川庆钻探工程有限公司钻采工程技术研究院 [2]低渗透油气田勘探开发国家工程实验室 [3]川庆钻探工程有限公司长庆井下技术作业公司

出　　处：《油气田地面工程》2021年第5期12-15,18,共5页Oil-Gas Field Surface Engineering

摘　　要：针对20^(#)钢90°弯头在页岩气地面测试流程应用时易出现冲蚀的问题,使用超音速等离子喷涂方法制备了碳化钨涂层。采用气固两相冲蚀试验机,对比20^(#)钢和碳化钨涂层弯头在不同冲蚀角度下的冲蚀规律及冲蚀机理。研究结果表明:20^(#)钢冲蚀速率随冲蚀角度增加而降低,冲蚀角度20°时冲蚀最严重;碳化钨涂层冲蚀率随冲蚀角度的增大先增大后减小,50°时冲蚀最严重,其抗冲蚀性能较20^(#)钢提高85%;20^(#)钢和碳化钨涂层低角度冲蚀时为微切削机理,高角度冲蚀时以挤压锻打机理为主。To solve the problem of erosion of the 90°elbow of 20^(#)steel in the application of shale gas surface test process,tungsten carbide coating is prepared by supersonic plasma spraying method.The erosion rules and mechanism of 20^(#)steel and tungsten carbide coatings under different erosion angles are compared by using a gas-solid bi-phase erosion tester.The results show that the erosion rate of 20^(#)steel decreased with the increase of erosion angle,and the erosion is most serious at 20°.The erosion rate of tungsten carbide coating increased first and then decreased with the increase of erosion angle.The erosion is most serious at 50°,and the erosion resistance is 85%higher than that of 20^(#)steel.The mechanism of erosion of 20^(#)steel and tungsten carbide coating is the micro cutting mechanism at low angles,while it is the extrusion forging mechanism at high erosion angles.

关 键 词：20^(#)钢 碳化钨涂层 抗冲蚀性能 冲蚀机理 

分 类 号：TE980[石油与天然气工程—石油机械设备]