Drilling flange and independent screwed wellhead with...

Details Drilling flange and independent screwed wellhead with... Drilling flange and independent screwed wellhead with...

2007-01-09

2007-01-09

Thompson, Kenneth (Department: 3672)

Wells

Above ground apparatus

With assembly or disassembly means

C166S075130, C166S379000

Reexamination Certificate

active

10656693

ABSTRACT:
A drilling flange and an independent screwed wellhead provides a metal-to-metal seal that supplements the traditional elastomeric O-rings for providing a fluid seal between the drilling flange and the wellhead. The metal-to-metal seal may be achieved using a metal ring gasket or two contacting metal surfaces that are machined to required tolerances and are configured to be forced together when the drilling flange is mounted to the wellhead. The metal-to-metal seal ensures a fluid seal between the flange body and the wellhead in the event that the O-rings malfunction or are destroyed by fire.

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