Perforating gun pressure bleed device

E - Fixed Constructions – 21 – B

Patent

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166/10

E21B 29/00 (2006.01) E21B 43/116 (2006.01)

Patent

CA 2006315

PERFORATING GUN PRESSURE BLEED DEVICE ABSTRACT OF THE DISCLOSURE Hydraulic cylinder apparatus, including a ram and attached piercing element is chained and secured around a perforating gun. A hydraulic cylinder is pressurized to thereby drive the piercing element through the sidewall of the perforating gun. The piercing element is tapered so that it is self-sealing during penetration of the gun sidewall. The piercing element is allowed to retract in a controlled manner so as to control the depressurization of the perforating gun.

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