US 11,753,876 B2
Curvilinear sealing system
Alejandro Juarez, Cypress, TX (US); and Nishikant V. Raje, Houston, TX (US)
Assigned to Hydril Company, Houston, TX (US)
Filed by HYDRIL COMPANY, Houston, TX (US)
Filed on May 26, 2020, as Appl. No. 16/883,134.
Application 16/883,134 is a continuation of application No. 15/962,043, filed on Apr. 25, 2018, granted, now 10,697,251.
Claims priority of provisional application 62/505,262, filed on May 12, 2017.
Prior Publication US 2020/0284101 A1, Sep. 10, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 17/042 (2006.01); F16L 15/06 (2006.01); F16L 15/00 (2006.01); E21B 17/08 (2006.01)
CPC E21B 17/0423 (2013.01) [E21B 17/08 (2013.01); F16L 15/002 (2013.01); F16L 15/06 (2013.01); Y10T 29/49881 (2015.01)] 16 Claims
OG exemplary drawing
 
1. A sealing system comprising:
a first tubular member having a first thread set and a second thread set and a first curvilinear sealing surface disposed axially between the first and second thread sets; and
a second tubular member having a third thread set and a fourth thread set and a second curvilinear sealing surface disposed axially between the third and fourth thread sets;
wherein the first tubular member and the second tubular member are configured to connect when the first thread set engages with the third thread set and the second thread set engages with the fourth thread set;
wherein the first and second curvilinear sealing surfaces are configured to interfere at an interference region when the first and second tubular members connect and both the first and second curvilinear sealing surfaces are curvilinear where such interference occurs; and
a first relief recess disposed on the first tubular member between the first thread set and the first curvilinear sealing surface.