改变螺杆泵锚定方式减缓杆管偏磨的探究
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- 英文论文题名：Research on Reducing the Rod and Tube Eccentric Wear by Changing the Anchoring Ways of Screw Pump
- 论文作者：解素伟
- 英文论文作者：Xie Suwei
- 年：2016
- 作者机构：大庆油田有限责任公司第六采油厂;
- 论文关键词：螺杆泵 ; 锚定装置 ; 防偏磨 ; 油管弯曲 ; 锚定管柱 ; 临界压力
- 英文论文关键词：screw pump ; anchoring device ; anti-eccentric wear ; tubing bending ; anchoring pipe string ; critical pressure
- 会议召开时间：2016-12-01
- 会议录名称：《采油工程文集》2016年第4辑
- 英文会议录名称：Oil Production Engineering
- 语种：中文
- 分类号：TE933.3
- 学会代码：DQGY
- 学会名称：大庆油田有限责任公司采油工程研究院
- 页数：5
- 文件大小：948k
- 原文格式：D
摘要
为了解决螺杆泵井在采用支撑卡瓦锚锚定油管时易造成油管弯曲、加剧杆管偏磨的问题,研究了新型螺杆泵锚定装置。根据弹塑性力学的基本理论,建立了管柱力学仿真数学模型,计算管柱在轴向压力作用下发生弯曲的失稳临界压力,模拟管柱受压后的弯曲形态,以管柱与套管接触点为固定点,依次计算各失稳弯曲段长度。同时结合DQ0522型号支撑卡瓦锚的工作方式,分析杆管锚定后的受力,确定新型锚定装置结构,改"下顶、上压"的弯曲状态为上部悬挂、自由拉伸垂直状态,改变管柱受力结构,消除了管柱的弯曲变形。截至2016年10月底,新型锚定装置在喇嘛甸油田共进行253口井现场试验,检泵周期较采用新型锚定装置前平均延长了87天。研制的螺杆泵新型锚定装置可改善管柱受力状况,消除或减缓杆管偏磨,延长采油井的检泵周期。
In order to solve the problems of tubing bending and deepening eccentric wear to rod and tube while adopting the supporting slip anchor to anchor the tubing in the screw pump wells,a new type of screw pump anchoring device has been studied.A mathematical model for pipe string mechanics simulation based on the basic theory of elastic-plastic mechanics has been established,to calculate the critical buckling pressure of pipe string bending under axial compression,to simulate the bending shape of compressed pipe string,and to calculate the each length of buckling bending sections in turn by taking the contact point of pipe string and casing as a fixed point.In the light of the working mode of DQ0522 type supporting slip anchor,the analysis of force on the rod and tube after anchoring was carried out,so as to determine the structure of new anchoring device,and the bending state was changed from the initial lower supporting and upper compression into free stretching vertical state by upper hanging.Therefore,the bending deformation of pipe string was eliminated by changing the force structure on the pipe string.By the end of October,2016,the new type of anchoring device had been tested on 253 wells in Lamadian Oilfield,and the average pump checking cycle was prolonged by 87 days compared with that before using the new anchoring device.The new anchoring device for screw pump could improve the force state of pipe string,eliminate or reduce the eccentric wear of rod and tube,and prolong the pump checking cycle in production wells.
In order to solve the problems of tubing bending and deepening eccentric wear to rod and tube while adopting the supporting slip anchor to anchor the tubing in the screw pump wells,a new type of screw pump anchoring device has been studied.A mathematical model for pipe string mechanics simulation based on the basic theory of elastic-plastic mechanics has been established,to calculate the critical buckling pressure of pipe string bending under axial compression,to simulate the bending shape of compressed pipe string,and to calculate the each length of buckling bending sections in turn by taking the contact point of pipe string and casing as a fixed point.In the light of the working mode of DQ0522 type supporting slip anchor,the analysis of force on the rod and tube after anchoring was carried out,so as to determine the structure of new anchoring device,and the bending state was changed from the initial lower supporting and upper compression into free stretching vertical state by upper hanging.Therefore,the bending deformation of pipe string was eliminated by changing the force structure on the pipe string.By the end of October,2016,the new type of anchoring device had been tested on 253 wells in Lamadian Oilfield,and the average pump checking cycle was prolonged by 87 days compared with that before using the new anchoring device.The new anchoring device for screw pump could improve the force state of pipe string,eliminate or reduce the eccentric wear of rod and tube,and prolong the pump checking cycle in production wells.
引文
[1]韩修廷,王秀玲,焦振强.螺杆泵采油原理及应用[M].哈尔滨:哈尔滨工程大学出版社,1998.
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[4]祝庆远,王民轩,罗俊,等.螺杆泵采油油管柱弯曲对抽油杆柱的影响[J].石油机械,1999,27(10):38-39.
[5]王亚娟.螺杆泵井杆管偏磨预防研究[J].机械研究与应,2014,27(4):40-46.
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[7]于孝合.螺杆泵井杆管偏磨分析与治理[J].石油石化节能,2011,1(8):48-50.
[2]史春华.采油螺杆泵力学仿真及结构参数优化设计方法[G]//大庆油田有限责任公司采油工程研究院.采油工程文集2013年第2辑.北京:石油工业出版社,2013:22-25.
[4]祝庆远,王民轩,罗俊,等.螺杆泵采油油管柱弯曲对抽油杆柱的影响[J].石油机械,1999,27(10):38-39.
[5]王亚娟.螺杆泵井杆管偏磨预防研究[J].机械研究与应,2014,27(4):40-46.
[6]刁望庆.螺杆泵井杆偏磨治理方法探讨[R].采油工程,2006(1):11-14.
[7]于孝合.螺杆泵井杆管偏磨分析与治理[J].石油石化节能,2011,1(8):48-50.