Drill string with interference fit couplings and couplers...

Details Drill string with interference fit couplings and couplers... Drill string with interference fit couplings and couplers...

E - Fixed Constructions

21

B

E21B 17/042 (2006.01) E21B 17/03 (2006.01) E21B 17/04 (2006.01)

Patent

CA 2392820

A threaded end of a drill rod is formed from a sleeve to one end of the body. The sleeve has a threaded bore to receive a threaded end of an adjacent component and is secured to the body of the rod by an interference fit between a bore and spigot on the two components.

Selon l'invention, on a formé sur une extrémité du corps d'une tige de forage, une extrémité filetée, destinée à un manchon. Le manchon comporte un alésage fileté destiné à recevoir ladite extrémité filetée du composant adjacent, et il est fixé sur le corps de la tige au moyen d'un ajustement serré, entre l'alésage du manchon et un tourillon de la tige.

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