E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 7/08 (2006.01) E21B 7/06 (2006.01) E21B 17/20 (2006.01) E21B 19/18 (2006.01) E21B 29/00 (2006.01) E21B 49/06 (2006.01)
Patent
CA 2197960
An apparatus and method are disclosed for the removal and replacement of the used drill bit after each perForation through casing, cement, and into rock while using a flexible drive shaft. This apparatus involves both a bayonet-style"quick connector" between the flexible shaft and the drill bit and a cartridge that holds the drill bits while they await their tum to be used. The apparatus also has a means for indexing the cartridge so that the flexible shaft can have access to each of the drill bits in the cartridge. The method disclosed involves the process of connecting the flexible shaft to the drill bit at the start of the perforating process, the disconnecting of the used bit at the end of the perforation, and the indexing of the cartridge so that the next drill bit is in line with the flexible shaft for the next perforation.
Appareil et méthode pour enlever et remplacer le foret usé après chaque perforation dans le revêtement, le ciment ou le roc lors de l'utilisation d'un arbre d'entraînement flexible. L'appareil nécessite un dispositif de raccordement rapide à baïonnette entre l'arbre flexible et le foret et une cartouche pour contenir les forets avant leur utilisation. L'appareil a aussi un moyen d'indexer la cartouche pour que l'arbre flexible puisse avoir accès à chacun des forets dans la cartouche. La méthode décrite touche le procédé de connexion de l'arbre flexible au foret au début de la perforation, le désengagement du foret utilisé à la fin de la perforation, et l'indexage de la cartouche pour que le foret suivant se trouve en ligne avec l'arbre flexible pour la perforation suivante.
Flores Mario
Havlinek Kenneth
Hinton Mark
Jaroska Miles
Ladue Duane
Schlumberger Canada Limited
Smart & Biggar
LandOfFree
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