Li Yuanchao, Wu Xiaodong, Lv Yanping, Xin Shuang, Wei Zhaoyan. RESEARCH ON THE DYNAMICS MODEL OF SURFACE-DRIVEN SINGLE PROGRESSING CAVITY PUMP ROD AND CENTRALIZER DESIGN[J]. Oil Drilling & Production Technology, 2005, 27(5): 67-70. DOI: 10.3969/j.issn.1000-7393.2005.05.019
Citation: Li Yuanchao, Wu Xiaodong, Lv Yanping, Xin Shuang, Wei Zhaoyan. RESEARCH ON THE DYNAMICS MODEL OF SURFACE-DRIVEN SINGLE PROGRESSING CAVITY PUMP ROD AND CENTRALIZER DESIGN[J]. Oil Drilling & Production Technology, 2005, 27(5): 67-70. DOI: 10.3969/j.issn.1000-7393.2005.05.019
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RESEARCH ON THE DYNAMICS MODEL OF SURFACE-DRIVEN SINGLE PROGRESSING CAVITY PUMP ROD AND CENTRALIZER DESIGN

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    • Abstract
  • The force on the surface-driven single progressing cavity pump(pcp) rod is researched and dynamics model of pcp rod movement is established.This model simulates actual movement situation of rod when pcp works.By considering the influence of lateral movement of pumping rod and describing its six directional displacement when rod runs,its axial force,side force and contact extent between the rod and the tubing could be obtained.By the severeness extent judge of rod contact,specific situations that need to centralize could be obtained.This model is suitable not only to the vertical well but also to the deflecting one.This research has been put into use in ErLian oilfields and wells production period is overtime for 4 month.
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