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Keywords: backup pressure
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Proceedings Papers

Paper presented at the IADC/SPE International Drilling Conference and Exhibition, March 8–10, 2022
Paper Number: SPE-208785-MS
... external leak sealability upstream oil & gas internal leak generic premium connection external pressure leak criterion complex reservoir backup pressure torque shoulder effective stress criterion leak constant premium connection leak goodman dependence Introduction The von Mises...
Proceedings Papers

Paper presented at the SPE/IADC International Drilling Conference and Exhibition, March 8–12, 2021
Paper Number: SPE-204130-MS
...) on the dimensionless abscissa [Goodman]. Circle radius is the leak resistance and depends on σ n which depends on depth z. ○ The circle becomes the customary skewed ellipse on axes of differential pressure and axial stress when σ n is replaced with the equivalent expression in terms of ΔP and backup pressure...
Proceedings Papers

Paper presented at the IADC/SPE International Drilling Conference and Exhibition, March 3–5, 2020
Paper Number: SPE-199651-MS
...-end effect, is developed for Buttress type threads in terms of the two flank angles. Second, the leak ratings for specific Buttress connections are presented in terms of a new leak criterion with dependence on backup pressure and axial force. Third, the leak dependence of Buttress type threads...
Proceedings Papers

Paper presented at the SPE/IADC International Drilling Conference and Exhibition, March 5–7, 2019
Paper Number: SPE-194059-MS
... approach used by API for internal leak, this paper obtains similar results for external leak. For API connections, the effects of combined axial force and backup pressure are then incorporated into the internal/external leak equations using results from the Mitchell and Goodman (2018) paper presented...

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