E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/117 (2006.01) E21B 37/08 (2006.01) E21B 43/26 (2006.01) E21B 43/263 (2006.01) E21B 43/267 (2006.01)
Patent
CA 2336414
A method and apparatus for perforating and stimulating a subterranean formation (16) which is penetrated by a well bore (10) having casing positioned therein so as to establish fluid communication between the formation and the well bore. Substantially rigid, flexible, or liquid propellant (20) is interposed between the casing (12) and at least one shaped charge (40) in a subterranean well bore and is ignited due to the shock, heat and/or pressure generated from the detonated charge. Upon burning, the propellant material generates gases which clean perforations formed in the formation by detonation of the shaped charge(s) and which extend fluid communication between the formation and the well bore.
L'invention concerne un procédé et un dispositif de perforation et de stimulation d'une formation souterraine (16), consistant à pénétrer cette formation au moyen d'un trou de forage (10) dans lequel on a placé un tubage, de manière à établir une communication fluidique entre la formation et le trou de forage. Un propergol(20) sensiblement rigide, souple, ou liquide, placé entre le tubage (12) et au moins une charge moulée de façon appropriée (40), dans un trou de forage souterrain, s'enflamme feu par suite du choc, de la chaleur et/ou de la pression, produits à partir de la charge ayant explosé. Lorsqu'il brûle, le propergol produit des gaz qui nettoient les perforations faites dans la formation par la détonation de ladite charge (desdites charges) et étendent la communication fluidique entre la formation et le trou de forage.
Macrae & Co.
Marathon Oil Company
LandOfFree
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