• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2020, Vol. 56 ›› Issue (12): 214-221.doi: 10.3901/JME.2020.12.214

• 可再生能源与工程热处理 • 上一篇    下一篇

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多相流体进泵过程机理建模

李翔宇1, 高宪文2, 袁春华1, 侯延彬2   

  1. 1. 沈阳理工大学自动化与电气工程学院 沈阳 110159;
    2. 东北大学信息科学与工程学院 沈阳 110819
  • 收稿日期:2019-09-21 修回日期:2020-03-30 出版日期:2020-06-20 发布日期:2020-07-14
  • 通讯作者: 袁春华(通信作者),女,1987年出生,博士,副教授。主要研究方向为复杂工业过程建模、控制与优化。E-mail:yuanch425@163.com
  • 作者简介:李翔宇,男,1982年出生,博士,副教授。主要研究方向为复杂工业过程建模、控制与优化。
  • 基金资助:
    国家自然科学基金(61573088)、辽宁省教育厅科学研究经费(LG201930)和辽宁省自然科学基金(20180540127)资助项目。

Mechanism Modeling for Multiphase Flow Entering Pump Process

LI Xiangyu1, GAO Xianwen2, YUAN Chunhua1, HOU Yanbin2   

  1. 1. School of Automation and Electrical Engineering, Shenyang Ligong University, Shenyang 110159;
    2. College of Information Science & Engineering, Northeastern University, Shenyang 110819
  • Received:2019-09-21 Revised:2020-03-30 Online:2020-06-20 Published:2020-07-14

摘要: 从举升过程中油气水多相流体质量比变化的角度出发,在确定溶解气油质量比随压力变化规律的基础上,综合考虑有杆泵抽汲过程中泵腔内气体可压缩性、原油中溶解气析出、泵阀局部阻力和抽油杆柱弹性振动等因素的影响,建立泵腔压力、进泵流体流量、泵腔内液体体积与柱塞运动之间相互关系的数学模型,得到一组描述多相流体进泵过程的新模型。油田现场应用表明,使用新模型预测的泵效与实际泵效的相对误差小于5%,仿真示功图与泵功图几何特征符合生产实际,模型精度能够满足工程应用的要求。新模型适用于有杆泵系统泵效分析计算、优化设计与故障诊断等。

关键词: 抽油井, 泵效, 充满程度, 多相流, 示功图, 机理建模

Abstract: From the perspective of change of the mass ratio of oil-gas-water multiphase flow in the lifting process, the change law of dissolved gas-oil mass ratio with the pressure is determined. The compressibility of the gas in the pump barrel, dissolved gas separation, local resistance of the pump valve and vibration of the sucker rod string are comprehensively considered. The new mathematical model for oil-gas-water multiphase flow entering pump process is set up, which is the mathematical model describing interrelationship of the pressure in the pump barrel, the fluid flow into the pump barrel, the volume of the fluid in the pump barrel and the movement of the plunger piston. The field application showed that the relative error between the simulation value of pump efficiency and the real value is less than 10%, the geometric characteristics of simulated surface and pump dynamometer card conformed to the production activity, and the model precision met the engineering requirement. The new model is suitable to the pump efficiency calculation, the optimal design and the fault diagnosis of the sucker rod pumping system.

Key words: oil well, pump efficiency, volumetric efficiency, multiphase flow, dynamometer card, mechanism modeling

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