Analysis of Energy Dissipation and Sealing Performance of the Premium Connection in Modal Vibrations
Source abstract
Abstract
Traditional static analysis cannot effectively explain the issue of the sealing performance of the premium connection being decreased due to the vibration of the tubing, leading to the failure of the connection sealing. In this paper, based on the energy dissipation theory and considering the influence of the micro contact slip of the sealing surface under the vibration of the tubing, a finite element model of the premium connection is established. The natural frequency and vibration mode are obtained through modal analysis experiments, and the accuracy of the finite element model is verified. The results show that the first five natural frequencies are mainly concentrated in the axial direction of the tubing, with the amplitude of the radial vibration mode being small. The vibration mode results are applied to the model as boundary conditions. It is found that an increase in the axial displacement amplitude leads to an increase in the energy dissipation of the sealing surface of the premium connection, which reduces the normal contact pressure and the effective length of the sealing surface, ultimately leading to a decrease in the sealing performance.
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Research context
OpenAlex topics: Vibration and Dynamic Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Mechanical Engineering College, Xi‘an Shiyou University, Xi’an 710065, China
College of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710065, China
Chinese National Engineering Research Center for Petroleum and Natural Gas Tubular Goods, Xi’an 710018, China
CNPC Baoji Petroleum Steel Pipe Co., Ltd., Baoji 721008, China
Funding
National Natural Science Foundation of China (NSFC) · Natural Science Basic Research Program of Shaanxi
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