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    Numerical Analysis of Residual Strength in the Perforated Casing of Ultra Deep Wells

    Yanxian Wu1, Shouming Zhong1, Zhigang Guan1, Lin Song1, Kun Li2, Jiarui Sun2, Yuqiang Xu2,*, Maochuan Tu3, Chaobin Fan3, Jinbin Yang4

    FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.1, pp. 261-271, 2023, DOI:10.32604/fdmp.2023.020076

    Abstract A three-dimensional model for the numerical simulation of casing-cement behavior is used to investigate residual strength in the perforated casing of ultra deep wells. The influence of the hole diameter, hole density and phase angle on the residual strength of the casing under non-uniform stress and fracturing conditions is revealed through the consideration of different perforation parameters. It is shown that the residual strength of the casing increases with the hole diameter and periodically changes with the hole density; the phase angle is the main factor that affects the residual strength of the perforated casing, and the perforation should be… More >

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