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1. (WO2018182859) BLOWOUT PREVENTION SYSTEM INCLUDING BLIND SHEAR RAM

Pub. No.:    WO/2018/182859    International Application No.:    PCT/US2018/017737
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Tue Feb 13 00:59:59 CET 2018
IPC: E21B 33/06
Applicants: GENERAL ELECTRIC COMPANY
Inventors: DEV, Bodhayan
TRIVEDI, Deepak
GAMBLE, Jamie, Clay
WOLFE, Christopher, Edward
GILLETTE, Gregory, Ronald
Title: BLOWOUT PREVENTION SYSTEM INCLUDING BLIND SHEAR RAM
Abstract:
A seal for a blind shear ram is configured to extend between a first carrier and a second carrier of the blind shear ram. The seal includes an outer layer configured to contact at least one of the first carrier and the second carrier to seal a wellbore when the blind shear ram is in a closed position. The outer layer has a first stiffness. The seal also includes an inner layer spaced from the outer layer. The inner layer has a second stiffness. The seal further includes an anti-extrusion structure extending between the inner layer and the outer layer. The anti-extrusion structure has a third stiffness greater than the first stiffness and the second stiffness. The outer layer covers the anti-extrusion structure.