Cutting element apparatuses and drill bits so equipped
First Claim
Patent Images
1. A rotary drill bit for drilling a subterranean formation, comprising:
- a bit body;
a cutting pocket defined in an exterior surface of the bit body;
a cutting element positioned at least partially in the cutting pocket, the cutting element comprising a substrate extending from an end surface to a back surface, a superabrasive material bonded to the end surface of the substrate, a base member affixed to the back surface of the substrate and a coupling recess defined in the base member;
a structural element partially disposed within the coupling recess and coupled to the base member; and
a material coating adhered to at least a portion of a surface of at least one of the cutting pocket and the cutting element, the material coating positioned between the cutting element and the cutting pocket, wherein the material coating is positioned and configured to accommodate relative rotation between the cutting element and the cutting pocket.
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Accused Products
Abstract
A cutting element assembly for use on a rotary drill bit for forming a borehole in a subterranean formation. A cutting element assembly includes a cutting element having a substrate. The cutting element assembly additionally includes a superabrasive material bonded to the substrate. The substrate extends from an end surface to a back surface. A base member is also coupled to the back surface of the substrate. Additionally, a recess is defined in the base member and a structural element is coupled to the base member. The cutting element assembly also includes a biasing element configured to selectively bias the structural element.
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Citations
19 Claims
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1. A rotary drill bit for drilling a subterranean formation, comprising:
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a bit body; a cutting pocket defined in an exterior surface of the bit body; a cutting element positioned at least partially in the cutting pocket, the cutting element comprising a substrate extending from an end surface to a back surface, a superabrasive material bonded to the end surface of the substrate, a base member affixed to the back surface of the substrate and a coupling recess defined in the base member; a structural element partially disposed within the coupling recess and coupled to the base member; and a material coating adhered to at least a portion of a surface of at least one of the cutting pocket and the cutting element, the material coating positioned between the cutting element and the cutting pocket, wherein the material coating is positioned and configured to accommodate relative rotation between the cutting element and the cutting pocket. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A rotary drill bit for drilling a subterranean formation, comprising:
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a bit body; a cutting pocket defined in an exterior surface of the bit body; a cutting element positioned at least partially in the cutting pocket, the cutting element comprising a substrate extending from an end surface to a back surface, a superabrasive material bonded to the end surface of the substrate, a base member affixed to the back surface of the substrate and a coupling recess defined in the base member; a structural element partially disposed within the coupling recess and coupled to the base member; a material coating adhered to at least a portion of a surface of at least one of the cutting pocket and the cutting element, the material coating positioned between the cutting element and the cutting pocket; and a through hole defined in the bit body, the through hole extending between the cutting pocket defined in the bit body and an anchor surface, wherein the structural element is rotatably disposed in the through hole. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A rotary drill bit for drilling a subterranean formation, comprising:
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a bit body; a cutting pocket defined in an exterior surface of the bit body; a cutting element positioned at least partially in the cutting pocket, the cutting element comprising a substrate extending from an end surface to a back surface and a superabrasive material bonded to the end surface of the substrate, a first material coating adhered to at least a portion of a surface of at least one of the cutting pocket, the first material coating comprising at least one coating selected from the group consisting of;
an electroplated coating, a thermally sprayed coating, a sputtered coating and an electrolessly deposited coating; anda second material coating adhered to at least a portion of the cutting element, the second material coating being separate and discrete from the first material coating, the second material coating consisting of;
an electroplated coating, a thermally sprayed coating, a sputtered coating and an electrolessly deposited coating, wherein at least one of the first material coating and the second material coating is positioned and configured to accommodate relative rotation between the cutting element and the cutting pocket.
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Specification