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| Erosion wear resistance of double thermal recovery wellheads |
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PEI Junfeng1, WANG Bing1, YIN Shunshi2, QIN Zhijian2, SHAO Jinhai2, XU Yanhai2
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(1.College of Mechanical Engineering, Changzhou University, Changzhou 213016, China;2.Jiangsu Jinshi Machinery Group Limited Company, Jinhu 211600, China)
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| Abstract: |
| In face of serious erosion problems in the steam assisted gravity drainage(SAGD) wellhead in the double thermal recovery, the influence factors of erosion wear are analyzed. By using the orthogonal test design, we perform CFD simulation and optimization to the SAGD wellhead. In use of the FSI (fluid-structure interaction) single-phase fluid-solid coupling module in ANSYS, the maximum axial velocity, radial velocity, global maximum wear rate and wall shearing stress were simulated for the orthogonal test, and the danger zone caused by the erosion damage in the wellhead equipment was judged. The results show that the optimized parameters are the inlet velocity of 0.1 m/s, particle size of 0.125 mm, transition radius of 8 mm, wall thickness of 21.8 mm, and the pipe materials are selected as 35CrMo for the matrix and WC-12Co for the coating. The optimization scheme of the multiphase fluid reduces the erosion effect on the wellhead pipe wall. |
| Key words: SAGD wellhead erosion wear fluid solid interaction simulation analysis optimal design |
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