Annular pressure spool

Details Annular pressure spool Annular pressure spool

E - Fixed Constructions

21

B

E21B 33/06 (2006.01) E21B 21/00 (2006.01) F16J 15/46 (2006.01)

Patent

CA 2406842

A well bore pressure containment device is provided. Operating as a single stripping and containment device compatible with a wide range of tool string and tubing sizes, the containment device may be integrated with rotating pressure control systems, and be used during completion and work over operations. The containment device has a spool, and a flexible bladder extending about the interior of the spool. The bladder may be controllably deformed to seal against a tool string passing through the device using an inwardly directed pressure, which preferably is exerted by a fluid in the interstitial space between the spool and the bladder.

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