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 43/267 (2006.01)
Patent
CA 2320720
A method for stimulating a subterranean formation (14) which is penetrated by a well bore (10) having casing (11) positioned therein so as to establish fluid communication between the formation and the well bore. Propellant (50) is secured to the outer surface (48) of a carrier (44) having a plurality of apertures (45) foamed therein. Detonating coral is positioned within said carrier and when ignited causes the propellant to ignite initially at each aperture. In this manner, the propellant is caused to burn in controlled, uniform manner. Upon burning, the propellant generates gasps which clean perforations previously formed through the casing into the formation and which extend fluid communication between the formation and the well bore.
L'invention concerne un procédé pour la stimulation d'une formation souterraine (14) dans laquelle un puits de forage (10) est formé, doté à l'intérieur d'un tubage de revêtement (11) de manière qu'une communication fluidique soit établie entre la formation et le puits. Un agent propulsif (50) est fixé à la surface extérieure (48) d'un support (44) dans lequel plusieurs ouvertures (45) sont formées. Un cordeau détonant est positionné dans ledit support et, lorsqu'il est enflammé, induit l'ignition de l'agent propulsif initialement au niveau de chaque ouverture. Ainsi, l'agent propulsif brûle de manière contrôlée et homogène. Lors de sa combustion, l'agent propulsif génère des gaz qui nettoient les perforations préalablement formées dans le tubage se trouvant dans la formation et s'étendant en communication fluidique entre la formation et le puits.
Haney Joseph P.
Snider Philip M.
Wesson David S.
Macrae & Co.
Marathon Oil Company
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