A method and apparatus for subterranean fracturing

E - Fixed Constructions – 21 – B

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Details

E21B 43/26 (2006.01) E21B 23/06 (2006.01) E21B 33/12 (2006.01) E21B 43/117 (2006.01)

Patent

CA 2693433

A subterranean formation stimulation system, comprising a gas generator (46), a high pressure seal (50,53), and means (44) to activate the generator. The high pressure may be a packer and or plug having an outer sealing surface on its outer periphery. The outer sealing surface is configured for metal to metal contact with the inner circumference of wellbore casing. The gas generator can be compressed gas or a propellant. The means to activate the generator includes a shaped charge. The system is disposable in a wellbore (5) on wireline (34), slick line, or tubing.

L'invention concerne un système de stimulation de formation souterraine comprenant un générateur de gaz, un joint d'étanchéité haute pression et des moyens pour activer le générateur. La pression élevée peut être une garniture d'étanchéité ou un bouchon dont la périphérie externe est pourvue d'une surface d'étanchéité externe conçue pour établir un contact métal à métal avec la circonférence interne du tubage de puits de forage. Le générateur de gaz peut être du gaz comprimé ou un gaz propulseur. Le moyen pour activer le générateur comporte une charge profilée. Le système peut être disposé dans un puits de forage sur un câble métallique, une ligne de tube de garnissage ou un tubage.

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