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  • Buckling behavior of tubing...
    Chen SHEN; Junfeng LIU

    You-qi chuyun, 02/2022, Volume: 41, Issue: 2
    Journal Article

    Tubings in injection and production wells of gas storage serve as dual channels in the process of gas injection and production. However, buckling behavior is prone to occur for the tubing in the complicated mechanical environment due to the large volume of gas injection and production, long operation time, forcible injection and production, and multi-cycle injection and production of gas storage, thus increasing the risk of tubing failure. Therefore, a theoretical model of tubing stress and deformation in gas storage under multi-cycle injection-production was established with reference to the operation characteristics of reservoir type gas storage, and the buckling behavior was judged and analyzed for the actual injection and production wells of a Gas Storage. The results show that: i) Buckling deformation may occur to the strings under the combined action of the internal and external pressure, temperature effect, swelling force and compressive force, with the maximum buckling ranging from sinusoidal buckling