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CSME 2023/03
Volume 44 No.1
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77-90
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Structure Optimization on Combine Rubber Cylinder of Gas Injection Packer
Lianyu Zhanga, Shijie Wanga, Wei Lva, Guangtao Yuea, Zecheng Wangb, Hao Fangc and Xianjun Zhouc
aSinopec Shengli Oilfield Petroleum Engineering Technology Research Institute
bChina Heavy Duty Automobile Group Co., Ltd.
cChina University of Petroleum (East China) Mechanical and Electrical Engineering College.
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Abstract:
Taking the JY445 packer combination rubber as the object, a three-dimensional model was established by using ANSYS finite element analysis software. The sealing performance of the rubber was analyzed by measuring the contact stress and the displacement of the steel cover. At the same time, the indoor test of the rubber tube was carried out, and the contact stress curve of the rubber tube was obtained and compared with the simulation results. The results verified the effectiveness of the simulation. Under the setting force of 7600Kg, five single factors were simulated and analyzed. The response surface method was used to simulate the model, and the optimal combination of the rubber cylinder was obtained. The results showed that the height of the middle rubber cylinder was 61mm, the height of the steel cover was 24mm, the angle interval of the end face of the middle rubber cylinder was 29°, the angle interval of the end face of the middle rubber cylinder was 11.01°, the secondary thickness of the middle rubber cylinder was 13mm, the contact stress of the better rubber cylinder was 9.584MPa, which increased by 36.46%, and the displacement of the steel cover was 1.224mm, which increased by 5.15%. The research shows that the single factor combined with the response surface method can significantly improve the sealing effect of the gas drive packer, improve the opening of the rubber cylinder, effectively improve the outburst prevention performance and prevent the gas explosion problem.
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Keywords: gas injection packer; rubber cylinder; structure optimization; response surface method.
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©
2023
CSME , ISSN 0257-9731
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