Annular blowout preventer

Details Annular blowout preventer Annular blowout preventer

E - Fixed Constructions

21

B

166/50

E21B 31/06 (2006.01)

Patent

CA 1059435

ABSTRACT OF THE DISCLOSURE There is disclosed an assembly for use in an annular blowout preventer of the type wherein a packer, received within a recess about a bore through the preventer housing, is adapted to be contracted by means of a piston having an annulus of resilient material movable inwardly within a chamber sur- rounding the recess and divided therefrom by a wall of the housing, and a disc-shaped member of resilient material ex- tending through and sealably slidable within a slot in the wall to transmit the inward movement of the piston to the packer. The assembly comprises a packer and piston of particular design, also means of particular design interconnecting the piston and packer.

309104

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