Wear sleeve

Details Wear sleeve Wear sleeve

E - Fixed Constructions

21

B

E21B 17/10 (2006.01) E21B 17/042 (2006.01)

Patent

CA 2449857

Wear sleeve for a drill pipe coupling (10), where a sleeve (18) is arranged in a drill pipe coupling on one of the two adjoining, coupled together drill pipes (12, 14) in a drill string, where the sleeve has an outer diameter that is larger than the outer diameter of the drill pipe coupling (10) and which comprises an inner continuous bore. The inner bore comprises a threaded section (22a) arranged for joining together with a corresponding outer threaded section (22) at the one end of the drill pipe coupling (10), whereupon the sleeve (18) is arranged to be securely fastened in the drill pipe coupling to form a wear sleeve.

L'invention concerne un protecteur de tiges pour raccord de tiges (10), dans lequel un manchon (18) est agencé, dans un raccord de tiges, sur l'une des deux tiges adjacentes, accouplée entre elles (12, 14) dans un train de tiges, le manchon présentant un diamètre extérieur supérieur au diamètre extérieur du raccord de tiges (10) et présentant un trou intérieur continu. Le trou intérieur présente une section filetée (22a) agencée de manière à permettre le raccordement avec une section filetée extérieure (22) à une extrémité du raccord de tiges (10), après quoi le manchon (18) est agencé pour être fixé solidement dans le raccord de tiges, de manière à former un protecteur de tiges.

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