H级抽油杆许用应力计算API方法适应性分析与改进
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摘要
鉴于H级超高强度抽油杆良好的力学性能,2009年开始,在长庆油田推广应用,截至2015年年底应用井数已经超过2.6万口。但在应用过程中,一直沿用常规API许用应力计算方法,尚未建立针对H级抽油杆的许用应力计算方法,造成H级抽油杆杆柱设计保守,浪费严重,间接增加了油田开发成本。在分析API许用应力计算方法基础上,建立了基于H级抽油杆许用应力计算API方法,分析了主要影响因素,为H级超高强度抽油杆杆柱优化设计、合理利用提供了依据。
Based on the much better mechanical properties of H-grade ultra-high strength sucker rod good,it has been applied in Changqing Oilfield since 2009,and moreover by the end of 2015,the applied well number reached more than 26 thousand. But in the application process,the conventional API calculating method has always been used; there is no specific calculating method for H-grade sucker rod allowable stress,this results in the conservative design,serious waste and indirectly increased oilfield development costs. On the basis of analyzing the API calculating method of the permissible stress,the API calculating method for H-grade sucker rod was established specifically,and furthermore the main influencing factors were analyzed. So the evidences were provided for the string optimized design and rational utilization of H-grade ultra-high strength sucker rod.
Based on the much better mechanical properties of H-grade ultra-high strength sucker rod good,it has been applied in Changqing Oilfield since 2009,and moreover by the end of 2015,the applied well number reached more than 26 thousand. But in the application process,the conventional API calculating method has always been used; there is no specific calculating method for H-grade sucker rod allowable stress,this results in the conservative design,serious waste and indirectly increased oilfield development costs. On the basis of analyzing the API calculating method of the permissible stress,the API calculating method for H-grade sucker rod was established specifically,and furthermore the main influencing factors were analyzed. So the evidences were provided for the string optimized design and rational utilization of H-grade ultra-high strength sucker rod.
引文
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[2]付亚荣.长庆油田超高强度抽油杆许用应力计算方法国内首创[J].石油石化节能,2015,26(6):44.
[3]王少力,郑子元.超高强度抽油杆在国内外的推广应用[J].石油矿场机械,2008,37(4):24-27.
[4]李大建,陆梅.H级抽油杆疲劳性能试验分析[J].石油矿场机械,2015,44(12):42-44.
[5]陈国明,东升方,方华灿.超高强度抽油杆的可靠性增长试验[J].石油大学学报(自然科学版),1993,17(3):58-64.
[6]胡雨人.抽油杆疲劳断裂研究:寿命预估[J].石油学报,1989,10(1):122-130.
[7]魏金辉,李淑红.高含水后期机采方式下分层采油技术的实践与认识[J].大庆石油地质与开发,2006,25(S):32-34.
[8]王群嶷,吴虞.降低采油工程投资的机采优化设计方法[J].大庆石油地质与开发,2011,30(3):113-117.
[9]韩修庭.抽油机井振动载荷对杆管偏磨的影响研究[J].大庆石油地质与开发,2004,23(1):38-41.
[10]刘桂林,兰铁英.抽油机偏磨治理的试验研究[J].大庆石油地质与开发,2004,23(6):51-52.