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<p>The action of high alternate loads and corrosive-active technological environments causes complex operating conditions of sucker rods in wells. The most severe loading conditions of sucker rods are associated with eccentric tension. Simulation and calculation modeling of stresses which will occur in operated sucker rods under real operating conditions is proposed to predict their performance. It is experimentally demonstrated that under rods eccentric tension, their fatigue life decreases, and the fatigue characteristics of 20N2М and 15N3МА steel rods become practically the same after their operation for 5&#xa0;years.</p>

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The effect of eccentric tension on the corrosion-fatigue resistance of pump rods

  • 期刊论文

  • 发表日期：

    2025年1月1日

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  • H. V. Krechkovska,
  • Ya. T. Fedorovych,
  • B. V. Kopey,
  • V. V. Mykhailiuk

摘要

The action of high alternate loads and corrosive-active technological environments causes complex operating conditions of sucker rods in wells. The most severe loading conditions of sucker rods are associated with eccentric tension. Simulation and calculation modeling of stresses which will occur in operated sucker rods under real operating conditions is proposed to predict their performance. It is experimentally demonstrated that under rods eccentric tension, their fatigue life decreases, and the fatigue characteristics of 20N2М and 15N3МА steel rods become practically the same after their operation for 5 years.