E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/22 (2006.01) E21B 43/243 (2006.01) E21B 43/27 (2006.01)
Patent
CA 2583835
Methods of stimulating production of coalbed methane from a coal-bearing formation are described, one method involving providing a perforation charge comprising a standard charge portion and a charge additive able to produce localized temporary oxidizing environments in perforations; perforating a coal-bearing formation with the perforation charge to form initial perforations defined by carbonaceous material, the initial perforations having localized temporary oxidizing environments in them, and initiating combustion of the carbonaceous material using the oxidizing environments, thus enlarging the initial perforations. Other methods involve perforating the coal-bearing formation with a standard perforation charge, thereby creating perforations; and treating the perforations with a composition creating temporary local oxidizing environments involving an oxidant in the perforations, and initiating combustion of carbonaceous material using the excess oxidant, thus enlarging the perforations.
Divulgation de méthodes pour la production stimulée de méthane de houille à partir d'une formation carbonifère. Une méthode comprend la fourniture d'une charge de perforation comprenanr une partie de charge standard et un supplément de charge capable de produire des environnements localisés temporaires oxydants dans des perforations; la perforation d'une formation carbonifère au moyen de ladite charge de perforation afin de former des perforations initiales définies par le matériau carbonifère, les perforations initiales comportant des environnements localisés temporaires oxydants; le démarrage de la combustion du matériau carbonifère au moyen des ces enrironnements oxydants, ce qui agrandit les perforations initiales. D'autres méthodes comprennent la perforation de la formation carbonifère au moyen d'une charge de perdoration standard, créant ainsi des perforations, le traitement de ces perforations avec une composition créant des environnements localisés temporaires oxydants mettant en jeu un oxydant dans les perforations, le démarrage de la combustion du matériau carbonifère au moyen de l'excès d'oxydant, ce qui agrandit les perforations.
Schlumberger Canada Limited
Smart & Biggar
LandOfFree
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