US 12,228,004 B2
Wellhead assembly and test sealing architecture
Edward Ganzinotti, III, Houston, TX (US); Craig Cotton, Cypress, TX (US); Pheng Aun Soh, Singapore (SG); and Juan Gonzalez, Houston, TX (US)
Assigned to CAMERON INTERNATIONAL CORPORATION, Houston, TX (US)
Filed by Cameron International Corporation, Houston, TX (US)
Filed on Dec. 15, 2020, as Appl. No. 17/122,538.
Claims priority of provisional application 62/951,158, filed on Dec. 20, 2019.
Prior Publication US 2021/0189822 A1, Jun. 24, 2021
Int. Cl. E21B 33/03 (2006.01); E21B 47/06 (2012.01); E21B 47/117 (2012.01)
CPC E21B 33/03 (2013.01) [E21B 47/06 (2013.01); E21B 47/117 (2020.05)] 11 Claims
OG exemplary drawing
 
1. A wellhead assembly comprising:
a base;
a wellhead installed at the base with a horizontal interface there between, the wellhead and base defining a vertical wellbore at an interior thereof;
a primary seal located in a groove defined by the interface for sealingly isolating fluids of the wellbore, the primary seal having an interior face and an outer face, the interior face closer to a vertical axis of the wellbore than the outer face, the faces for the sealingly isolating of the fluids;
an external test port in fluid communication with the primary seal through an intentional leak path terminating at the groove at a location between the interior and outer faces for pressure testing of the primary seal from a location exterior of the wellhead; and
a secondary seal of a unitary configuration adjacently distanced from the primary seal at the horizontal interface between the base and the wellhead and further located adjacent the primary seal closer to the vertical wellbore to back up the interior face of the primary seal for the pressure testing.