Claims
- 1. A cutting element for use on an earth boring drill bit for drilling subterranean formations, comprising:
a member including a segment-retaining portion and a drill bit attachment portion attachable to a drill bit; and a segment comprising a continuous phase impregnated with a particulate abrasive material, and secured to said segment-retaining portion, at least a portion of at least one of said member and said segment receiving at least a portion of the other of said member and said segment.
- 2. The cutting element of claim 1, wherein said member comprises a tough and ductile material.
- 3. The cutting element of claim 2, wherein said tough and ductile material comprises iron, an iron-based alloy, nickel, a nickel-based alloy, copper, a copper-based alloy, titanium, a titanium-based alloy, zirconium, a zirconium-based alloy, silver, or a silver-based alloy.
- 4. The cutting element of claim 1, wherein said continuous phase comprises a metal carbide, a refractory metal alloy, a ceramic, copper, a copper-based alloy, nickel, a nickel-based alloy, cobalt, a cobalt-based alloy, iron, an iron-based alloy, silver, or a silver-based alloy.
- 5. The cutting element of claim 1, wherein said particulate abrasive material comprises at least one of natural diamond, synthetic diamond, or cubic boron nitride.
- 6. The cutting element of claim 1, wherein said segment further comprises a secondary particulate abrasive.
- 7. The cutting element of claim 1, wherein said segment comprises a member-securing portion including a shape complementary to a shape of said segment-receiving portion.
- 8. The cutting element of claim 1, wherein said segment is cylindrical.
- 9. The cutting element of claim 1, wherein said member is elongated.
- 10. The cutting element of claim 1, wherein said member includes a recess configured to receive at least a portion of said segment.
- 11. The cutting element of claim 1, wherein said segment is configured to face in a direction of drilling of the earth boring drill bit.
- 12. A rotary-type earth boring drill bit for drilling subterranean formations, comprising:
a bit body; and at least one cutting element comprising:
a member including a segment-retaining portion and a drill bit attachment portion at least partially disposed within said bit body; and a segment comprising a continuous phase impregnated with particulate abrasive material, said segment including a member-securing portion to which said segment-retaining portion of said member is secured, at least a portion of at least one of said member and said segment receiving at least a portion of the other of said member and said segment.
- 13. The drill bit of claim 12, wherein said bit body comprises at least one socket.
- 14. The drill bit of claim 13, wherein said at least one socket comprises a shape complementary to said drill bit attachment portion.
- 15. The drill bit of claim 12, wherein said member comprises iron, an iron-based alloy, nickel, a nickel-based alloy, copper, a copper-based alloy, titanium, a titanium-based alloy, zirconium, a zirconium-based alloy, silver, or a silver-based alloy.
- 16. The drill bit of claim 15, wherein said bit body includes a particulate-based matrix infiltrated with a binder.
- 17. The drill bit of claim 16, wherein at least a portion of said binder secures said member to said bit body.
- 18. The drill bit of claim 12, wherein said member-securing portion comprises a shape complimentary to said segment-retaining portion.
- 19. The drill bit of claim 12, wherein said particulate abrasive material comprises at least one of natural diamond, synthetic diamond, or boron nitride.
- 20. The drill bit of claim 13, wherein said at least one socket includes a countersink.
- 21. The drill bit of claim 20, wherein said countersink is configured to receive said at least one cutting element in such a manner that at least a portion of said segment is located below a face of said bit body.
- 22. The drill bit of claim 10, comprising a plurality of cutting elements in at least one of a radial arrangement, a spiral arrangement, and a concentric arrangement.
- 23. A cutting element for use on an earth boring drill bit for drilling subterranean formations, comprising:
a segment comprising a continuous phase impregnated with a particulate abrasive material, said segment including at least one portion that receives or is received by another member of the cutting element.
- 24. The cutting element of claim 23, wherein said continuous phase comprises at least one of a metal carbide, a refractory metal alloy, a ceramic, copper, a copper-based alloy, nickel, a nickel-based alloy, cobalt, a cobalt-based alloy, iron, an iron-based alloy, silver, and a silver-based alloy.
- 25. The cutting element of claim 23, wherein said segment is configured to protrude from the earth boring drill bit.
- 26. The cutting element of claim 25, wherein said continuous phase is configured to at least partially protrude from a blade of the earth boring drill bit.
- 27. The cutting element of claim 25, wherein said continuous phase is configured to at least partially protrude from a crown profile of the earth boring drill bit.
- 28. A rotary-type earth boring drill bit for drilling subterranean formations, comprising:
a bit body; and at least one cutting element secured to said bit body so as to protrude therefrom, said at least one cutting element including a segment with a continuous phase impregnated with a particulate abrasive material, said segment including at least one portion that receives or is received by another member of said at least one cutting element.
- 29. The rotary-type earth boring drill bit of claim 28, wherein said at least one cutting element at least partially protrudes from at least one of a crown profile of said bit body and a blade of said bit body.
- 30. A cutting element for use on an earth boring drill bit for drilling subterranean formations, comprising:
a member including a segment-retaining portion and a drill bit attachment portion attachable to a drill bit; and a segment comprising a continuous phase impregnated with a particulate abrasive material, and secured to said segment-retaining portion.
- 31. The cutting element of claim 30, wherein said member comprises a tough and ductile material.
- 32. The cutting element of claim 30, wherein said continuous phase comprises a binder material.
- 33. The cutting element of claim 29, wherein said particulate abrasive material comprises at least one of natural diamond, synthetic diamond, or cubic boron nitride.
- 34. The cutting element of claim 29, wherein said segment further comprises a secondary particulate abrasive.
- 35. The cutting element of claim 29, wherein said segment comprises a member-securing portion including a shape complementary to a shape of said segment-receiving portion.
CROSS-REFERENCE TO RELATED APPLICATION
1. This application is a continuation of application Ser. No. 09/154,383, filed Sep. 16, 1998.
Continuations (1)
|
Number |
Date |
Country |
Parent |
09154383 |
Sep 1998 |
US |
Child |
09732074 |
Dec 2000 |
US |