US 12,123,281 B2
Barrier member
Matthew McCarthy, Calgary (CA); and Steven Taitinger, Calgary (CA)
Filed by TORSCH INC., Calgary (CA)
Filed on Mar. 18, 2022, as Appl. No. 17/698,597.
Prior Publication US 2023/0295999 A1, Sep. 21, 2023
Int. Cl. E21B 34/06 (2006.01); E21B 33/12 (2006.01)
CPC E21B 34/063 (2013.01) [E21B 33/12 (2013.01)] 27 Claims
OG exemplary drawing
 
27. A method for selectably sealing an interior bore of a down hole string comprising:
locating an elongate body extending between top and bottom ends in line with a completion string; and
applying a pressure to a bore through the completion string and body so as to rupture a barrier member fastened to and bridging the bore into at least one leaf portion, wherein the at least one leaf portion is deformed out of the path of the bore along a weakened path defining at least one leaf portion operable to be separated from the remainder of the barrier member along the weakened path,
wherein the weakened path extends from a rupture point to side ends extending adjacent to a securing portion of the barrier member, the side ends defining a hinge portion therebetween narrower than the widest portion of the at least one leaf portion.