Wellhead equipment that use polymer sealing elements to seal...

Details Wellhead equipment that use polymer sealing elements to seal... Wellhead equipment that use polymer sealing elements to seal...

E - Fixed Constructions

21

B

E21B 33/06 (2006.01) E21B 36/00 (2006.01)

Patent

CA 2227399

Wellhead equipment includes a body having a drilling conduit passage, whereby drilling conduit is passed through the body. Polymer sealing elements are disposed within the body and disposed in relation to the passage to seal off well pressure. A circulation passage extends through the body in the vicinity of the polymer sealing elements. The circulation passage has an inlet and an outlet whereby warm fluid is circulated through the circulation passage from the inlet to the outlet thereby raising the temperature of the polymer sealing elements to improve their cold weather performance.

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