Erosion resistant fluid passageways and flow tubes for...

E - Fixed Constructions – 21 – B

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E21B 10/08 (2006.01) E21B 10/18 (2006.01) E21B 10/24 (2006.01)

Patent

CA 2708810

Flow tubes for earth-boring tools include hardfacing material for protecting the tubes from erosion due to the flow of fluid through a fluid passageway extend-ing therethrough. Earth-boring tools include an erosion-re-sistant material covering a surface of a body of the tools for protecting the bodies from erosion due to the flow of fluid through a fluid passageway extending therethrough. Meth-ods of forming earth-boring tools include forming a body having a fluid passageway extending therethrough and cov-ering a surface of the body with a hardfacing material. The surface of the body may be located in a region susceptible to erosion when fluid is caused to flow through the fluid passageway.

Des tubes d'écoulement pour outils de forage comprennent un matériau de surfaçage de renfort pour protéger les tubes de l'érosion due à l'écoulement de fluide à travers une voie de passage de fluide s'étendant à travers celui-ci. Des outils de forage comprennent un matériau résistant à l'érosion qui recouvre une surface d'un corps des outils pour protéger lesdits corps de l'érosion due à l'écoulement de fluide à travers une voie de passage de fluide s'étendant à travers ceux-ci. Des procédés de formation d'outils de forage consistent à former un corps doté d'une voie de passage de fluide s'étendant à travers celui-ci, et revêtir une surface du corps d'un matériau de surfaçage de renfort. La surface du corps peut être située dans une zone sujette à l'érosion quand le fluide est amené à s'écouler à travers la voie de passage de fluide.

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