摘要
为降低铝合金石油套管严重磨损的风险,将7075铝合金磨盘和40CrNiMo销钉作为摩擦副,采用UTM摩擦试验机研究滑动速度对铝合金石油套管干摩擦学性能的影响。研究结果表明:当滑动速度为50~600 mm/s时,随着滑动速度的增加,摩擦因数不断减小、波动不断增大;磨损率随滑动速度的增加先缓慢增加再显著上升;在低滑动速度(50~100 mm/s)下,7075铝合金主要磨损机制为轻微氧化磨损;在中等滑动速度(150 mm/s)下,主要磨损机制转变为氧化磨损;当滑动速度在350~600 mm/s之间时,7075铝合金主要磨损机制转变为黏着-分层磨损;采用空气钻井技术时,在满足钻井要求的情况下,使钻杆转动线速度低于150 mm/s可以有效地避免铝合金套管严重磨损。研究结果可为铝合金套管的防磨损方法研究提供一定的指导。
To reduce the risk of severe wear of aluminum alloy oil casing,the 7075 aluminum alloy grinding discs and 40CrNiMo pins are used as friction pairs,and UTM friction tester is used to study the effect of sliding speed on the dry friction properties of aluminum alloy oil casing.The research results show that when the sliding speed is 50~600 mm/s,as the sliding speed increases,the friction factor decreases and fluctuates continuously.The wear rate first increases slowly and then significantly with the sliding speed.At low sliding speeds(50~100 mm/s),the main wear mechanism of 7075 aluminum alloy is slight oxidation wear.At medium sliding speeds(150 mm/s),the main wear mechanism changes to oxidation wear.When the sliding speed is 350~600 mm/s,the main wear mechanism of 7075 aluminum alloy changes to adhesion-delamination wear.When air drilling technology is used,under the condition of meeting the drilling requirements,making the linear velocity of the drill pipe rotation lower than 150 mm/s can effectively avoid serious wear of the aluminum alloy casing.The research results can provide certain guidance for the research on anti-wear methods of aluminum alloy casing.
作者
张敏
靳晓伟
刘君
杨海滨
梁玉林
Zhang Min;Jin Xiaowei;Liu Jun;Yang Haibin;Liang Yulin(Yumen Drilling Company,CNPC Xibu Drilling Engineering Company Limited;Zhundong Drilling Company,CNPC Xibu Drilling Engineering Company Limited;No.2 Oil Production Plant,PetroChina Changqing Oilfield Company;Drilling and Production Engineering Technology Research Institute of CNPC Chuanqing Drilling Engineering Company Limited)
出处
《石油机械》
北大核心
2021年第8期118-124,共7页
China Petroleum Machinery
基金
国家重点研发计划项目“深海水合物开采立管水动力载荷分析和甲烷气体演化风险监测技术研究”(2019YFC0312303)
中国石油-西南石油大学创新联合体科技合作项目(2020CX040204)。
