Cutting element for subterranean drilling

Details Cutting element for subterranean drilling Cutting element for subterranean drilling

E - Fixed Constructions

21

B

E21B 10/567 (2006.01)

Patent

CA 2689401

A drill bit (100) or milling tool includes a bit body on which a plurality of cutting elements (116) are disposed. At least some of the plurality of cutting elements include a diamond table and a superabrasive material non-reactive with iron-based materials disposed over at least a portion of an exterior surface of the diamond table. The diamond table is suitable for drilling through a subterranean formation and the non-reactive superabrasive material is suitable for drilling through a casing or casing-associated component comprising an iron-based material and disposed within the subterranean formation. The diamond table may comprise a PDC and the non-reactive superabrasive material may comprise cubic boron nitride.

L'invention concerne un trépan ou un outil de broyage comprenant un corps de trépan sur lequel une pluralité d'éléments de coupe sont disposés. Au moins certains de la pluralité d'éléments de coupe comprennent un plateau diamanté et un matériau super abrasif non réactif avec des matériaux à base de fer disposés au-dessus d'au moins une partie d'une surface extérieure du plateau diamanté. Le plateau diamanté est adapté pour forer à travers une formation souterraine et le matériau super abrasif non réactif est adapté pour forer à travers un tubage ou un composant associé à un tubage comprenant un matériau à base de fer qui est disposé dans la formation souterraine. Le plateau diamanté peut comprendre un PDC et le matériau super abrasif non réactif peut être constitué de nitrure de bore cubique.

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