偏磨抽油杆接箍力学性能及承载能力分析——以塔河油田抽油杆接箍断脱为例  

Analysis of Mechanical Properties and Bearing Capacity of Partial Grinding Pumping Rod:Take the Pumping Rod Hoop Break in Tahe Oilfield as an Example

作　　者：康红兵[1,2] 彭振华 丁雯[1,2] 冯园艺 李京帅[3] 李森 KANG Hong-bing;PENG Zhen-hua;DING Wen;FENG Yuan-yi;LI Jing-shuai;LI Sen(SINOPEC Northwest Company of China Petroleum and Chemical Corporation,Urumqi 830011,China;Key Laboratory of Enhanced Oil Recovery in Carbonate Fractured-vuggy Reservoirs,SINOPEC,Urumqi 830011,China;College of Mechanical Science and Engineering,Northeast Petroleum University,Daqing 163318,China)

机构地区：[1]中国石油化工股份有限公司西北油田分公司,乌鲁木齐830011 [2]中国石油化工集团公司碳酸盐岩缝洞型油藏提高采收率重点实验室,乌鲁木齐830011 [3]东北石油大学机械科学与工程学院,大庆163318

出　　处：《科学技术与工程》2023年第4期1526-1533,共8页Science Technology and Engineering

基　　金：“十三五”国家油气重大专项示范工程(2016ZX05053-004)。

摘　　要：针对塔河油田抽油杆接箍在采油生产过程中,易发生磨损现象,而导致抽油杆接箍断脱失效的问题。以直径为25 mm抽油杆,基体材料为35CrMo接箍为研究对象,考虑接箍壁厚受磨损程度的影响,应用有限元方法,开展抽油杆接箍在拉压载荷作用下受力分析和承载范围分析。通过拉压试验测试和数值模拟结果对比分析并验证数值方法可靠性基础上,开展了拉压载荷在20~250 kN下不同磨损量抽油杆接箍的力学性能分析。结果表明:等效应力和接触应力均随着载荷增大而增大,无磨损接箍在受力范围内均能满足应用要求。但由于接箍出现偏磨,其等效应力与接触应力分布对称性变差,且磨损严重时,其承载能力严重下降,断脱风险加大。The sucker rod coupling in Tahe oilfield is prone to wear in the process of oil production,which leads to the failure of sucker rod coupling.Taking the sucker rod with a diameter of 25 mm and the base material of 35CrMo coupling as the research object,considering the influence of the wear degree on the wall thickness of the coupling,the finite element method was applied to carry out the stress analysis and bearing range analysis of the sucker rod coupling under tension and compression load.On the basis of comparing and analyzing the results of tension and compression test and numerical simulation and verifying the reliability of the numerical method,the mechanical properties of sucker rod coupling with different wear under tension and compression load of 20~250 kN were analyzed.The results show that the equivalent stress and contact stress increase with the increase of load,and the wear-free coupling can meet the application requirements within the stress range.However,due to the eccentric wear of the coupling,the symmetry of its equivalent force and contact stress distribution becomes worse,and when the wear is serious,its bearing capacity is seriously reduced,and the risk of breaking off is increased.

关 键 词：抽油杆接箍 断脱失效 拉压试验 接箍偏磨 承载能力 

分 类 号：TE933[石油与天然气工程—石油机械设备]