Blowout preventer shear blades

Details Blowout preventer shear blades Blowout preventer shear blades

E - Fixed Constructions

21

B

166/50

E21B 33/06 (2006.01)

Patent

CA 1142429

DIV. III ABSTRACT OF THE DISCLOSURE This invention relates to shear blades for a blowout preventer to shear the drill string and seal the well bore should the need arise. Two shearing rams have shear blades which shear the drill pipe. A seal member is mounted behind one of the shear blades and is adapted to move into sealing position after shearing has occurred. Elastomer flow into areas where there has been damage to the seal member is permitted by the design of the seal member.

404914

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