Study of fatigue damage of pumping rods based on finite element simulation
This study performed in-depth analysis of onsite fatigue damage and stress distribution in pumping rods. Two aspects of fatigue damage were analyzed: macroscopic morphology and chemical properties. In terms of chemical properties, the crystalline phase composition and hardness of the product at fati...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-01-01
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| Series: | Frontiers in Earth Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2022.1013167/full |
| _version_ | 1797956251255046144 |
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| author | Wenbin Cai Xiangyang Mo Wen Li Shun Liu Desheng Zhou Huiren Zhang Zhimin Huang |
| author_facet | Wenbin Cai Xiangyang Mo Wen Li Shun Liu Desheng Zhou Huiren Zhang Zhimin Huang |
| author_sort | Wenbin Cai |
| collection | DOAJ |
| description | This study performed in-depth analysis of onsite fatigue damage and stress distribution in pumping rods. Two aspects of fatigue damage were analyzed: macroscopic morphology and chemical properties. In terms of chemical properties, the crystalline phase composition and hardness of the product at fatigue damage were analyzed; the stress distribution was analyzed in term so of the rod-body stress and the connection-section stress. The cross-sectional characteristics of the fatigue crack expansion were summarized, and the types of fatigue fracture and the influencing factors of the pumping rod were obtained from these cross-sectional characteristics. Finally, modeling and stress analysis of the pumping rod were performed using SolidWorks and ABAQUS software. By comparing the stress cloud diagrams of different thread root shapes, the factors that cause fracture in the pumping rod and the locations of stress concentrations and dangerous cross-sections of the rod were determined. The highest principal stresses were obtained at the rod body near the upsetting flange of the pumping rod, and fatigue damage was the most likely to occur at this location. The shoulder of the unloading groove and the upsetting flange area were relatively safe because of their large cross-sectional area and less likelihood to produce stress concentrations. The results of this study can provide scientific guidance and reference for the development of pumping rods for efficient oil production and the improvement of oil and gas production efficiency. |
| first_indexed | 2024-04-10T23:47:08Z |
| format | Article |
| id | doaj.art-8fbb6b5940aa4816af99f24b9d3b7a56 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-04-10T23:47:08Z |
| publishDate | 2023-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-8fbb6b5940aa4816af99f24b9d3b7a562023-01-11T04:26:40ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632023-01-011010.3389/feart.2022.10131671013167Study of fatigue damage of pumping rods based on finite element simulationWenbin Cai0Xiangyang Mo1Wen Li2Shun Liu3Desheng Zhou4Huiren Zhang5Zhimin Huang6College of Petroleum Engineering, Xi’an Shiyou University, Xi’an, ChinaCollege of Petroleum Engineering, Xi’an Shiyou University, Xi’an, ChinaResearch Institute of Engineering Technology, PetroChina Xinjiang Oilfield Company, Karamay, ChinaCollege of Petroleum Engineering, Xi’an Shiyou University, Xi’an, ChinaCollege of Petroleum Engineering, Xi’an Shiyou University, Xi’an, ChinaCollege of Petroleum Engineering, Xi’an Shiyou University, Xi’an, ChinaCollege of Petroleum Engineering, Xi’an Shiyou University, Xi’an, ChinaThis study performed in-depth analysis of onsite fatigue damage and stress distribution in pumping rods. Two aspects of fatigue damage were analyzed: macroscopic morphology and chemical properties. In terms of chemical properties, the crystalline phase composition and hardness of the product at fatigue damage were analyzed; the stress distribution was analyzed in term so of the rod-body stress and the connection-section stress. The cross-sectional characteristics of the fatigue crack expansion were summarized, and the types of fatigue fracture and the influencing factors of the pumping rod were obtained from these cross-sectional characteristics. Finally, modeling and stress analysis of the pumping rod were performed using SolidWorks and ABAQUS software. By comparing the stress cloud diagrams of different thread root shapes, the factors that cause fracture in the pumping rod and the locations of stress concentrations and dangerous cross-sections of the rod were determined. The highest principal stresses were obtained at the rod body near the upsetting flange of the pumping rod, and fatigue damage was the most likely to occur at this location. The shoulder of the unloading groove and the upsetting flange area were relatively safe because of their large cross-sectional area and less likelihood to produce stress concentrations. The results of this study can provide scientific guidance and reference for the development of pumping rods for efficient oil production and the improvement of oil and gas production efficiency.https://www.frontiersin.org/articles/10.3389/feart.2022.1013167/fullpumping rodsfatigue fracturestress distributioncrack extensionfinite element simulation |
| spellingShingle | Wenbin Cai Xiangyang Mo Wen Li Shun Liu Desheng Zhou Huiren Zhang Zhimin Huang Study of fatigue damage of pumping rods based on finite element simulation Frontiers in Earth Science pumping rods fatigue fracture stress distribution crack extension finite element simulation |
| title | Study of fatigue damage of pumping rods based on finite element simulation |
| title_full | Study of fatigue damage of pumping rods based on finite element simulation |
| title_fullStr | Study of fatigue damage of pumping rods based on finite element simulation |
| title_full_unstemmed | Study of fatigue damage of pumping rods based on finite element simulation |
| title_short | Study of fatigue damage of pumping rods based on finite element simulation |
| title_sort | study of fatigue damage of pumping rods based on finite element simulation |
| topic | pumping rods fatigue fracture stress distribution crack extension finite element simulation |
| url | https://www.frontiersin.org/articles/10.3389/feart.2022.1013167/full |
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