Zhu, Z.; Cai, M.; Cui, L.; Song, X.; Xu, X.; Cong, C.; Li, H.; Gao, Q. Simulation Study on Static Sealing Performance of Packer’s Rubber Cylinder in SC-CO2 Environment. Preprints2024, 2024051738. https://doi.org/10.20944/preprints202405.1738.v1
APA Style
Zhu, Z., Cai, M., Cui, L., Song, X., Xu, X., Cong, C., Li, H., & Gao, Q. (2024). Simulation Study on Static Sealing Performance of Packer’s Rubber Cylinder in SC-CO2 Environment. Preprints. https://doi.org/10.20944/preprints202405.1738.v1
Chicago/Turabian Style
Zhu, Z., Haicheng Li and Qiming Gao. 2024 "Simulation Study on Static Sealing Performance of Packer’s Rubber Cylinder in SC-CO2 Environment" Preprints. https://doi.org/10.20944/preprints202405.1738.v1
Abstract
This study aimed to solve the problems of sealing and tearing failure of packer’s rubber cylinders during CO2 downhole injection. Using the simulation software, Comsol, a rubber cylinder model in a supercritical CO2 (SC-CO2) environment was established. The thermal analogy method was used to simulate the CO2 diffusion and rubber cylinder swelling process, thus we analyzed the deformation and stress of the rubber cylinder caused by temperature, pressure and CO2 as swelling agent. Results showed that, in the SC-CO2 environment, under the influence of CO2 diffusion and the consequent swelling, the rubber cylinder body is prone to large deformation, and the maximum shear stress is significantly increased, leading to shear failure of the rubber cylinder. The reduction of the initial seating pressure can alleviate the impact of deformation, whereas the reduction of the maximum contact pressure could cause the rubber cylinder to lose its seal. We also analyzed the change rules between various factors and the maximum contact pressure of the rubber cylinder, which provides a theoretical basis and technical support for improving the sealing performance of the packer’s rubber cylinder in the SC-CO2 environment.
Copyright:
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