Quill saver sub

Details Quill saver sub Quill saver sub

E - Fixed Constructions

21

B

E21B 19/18 (2006.01)

Patent

CA 2609068

A saver sub assembly has a body capable of coupling with a quill, and a split ring capable of coupling with the quill and the body and capable of keeping the quill and body together. The body has splines to prevent relative rotation between the quill and the body. The body may be hollow, and/or have a split ring retainer to maintain the position of the split ring. The saver sub assembly may also have one or more O-rings positioned between the body and the quill. The body of the saver sub assembly may have a threaded pin for engaging a drill string.

L'invention concerne un ensemble de réduction qui comprend un corps pouvant être couplé à une buse et un anneau fendu pouvant être couplé à la buse et au corps et pouvant maintenir la buse et le corps unis. Le corps comprend des rainures afin de prévenir une rotation relative entre la buse et le corps. Le corps peut être creux et/ou comprendre un dispositif de retenue de l'anneau fendu afin de conserver la position de l'anneau fendu. L'ensemble de réduction peut également comprendre un ou plusieurs joints toriques disposés entre le corps et la buse. Le corps de l'ensemble de réduction peut comprendre une tige filetée destinée à venir en prise avec le train de tiges.

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