Granted Patent B2

US 9,421,671 · App. 13/368,928 · Granted Aug 23, 2016

Abstract

Claims (33)

1. A solidified infiltrated tool configured to be resistant to wear, wherein the solidified infiltrated tool is selected from the group consisting of a drill bit body, a wear pad, and a wear strip, the solidified infiltrated tool comprising:

a matrix having a hard particulate material and a plurality of diamond particles dispersed throughout the hard particulate material; and

a binder comprising a copper-based infiltrant,

wherein the diamond particles comprise between about 35 percent and about 75 percent by volume of the solidified infiltrated tool, and wherein the binder secures the hard particulate material and the diamond particles together,

wherein the diamond particles comprise the largest component by volume of the solidified infiltrated tool, wherein the diamond particles are substantially homogenously dispersed throughout the solidified infiltrated tool, and wherein the diamond particles are configured to provide the primary defense against wear and erosion of the solidified infiltrated tool.

2. The solidified infiltrated tool as recited in claim 1 , wherein the diamond particles comprise synthetic diamond crystals.

3. The solidified infiltrated tool as recited in claim 1 , wherein the hard particulate material comprises tungsten carbide.

4. The solidified infiltrated tool as recited in claim 1 , wherein the diamond particles comprise about 50 percent by volume of the solidified infiltrated tool.

5. The solidified infiltrated tool as recited in claim 1 , wherein the diamond has a largest dimension of between about 0.01 millimeters to about 1.0 millimeters.

6. The solidified infiltrated tool as recited in claim 1 , wherein the diamond has a largest dimension of more than about 2.0 millimeters.

7. The solidified infiltrated tool as recited in claim 6 , wherein the diamond has a volume of more than about 8 mm 3 .

8. The solidified infiltrated tool as recited in claim 1 , wherein the binder comprises between about 20 percent and about 45 percent by volume of the solidified infiltrated tool.

9. The solidified infiltrated tool as recited in claim 1 , wherein the solidified infiltrated tool is the drill bit body.

10. The solidified infiltrated tool as recited in claim 9 , further comprising a plurality of cutters secured to the solidified infiltrated drill bit body.

11. The solidified infiltrated tool as recited in claim 1 , wherein the solidified infiltrated tool is the wear pad.

12. The solidified infiltrated tool as recited in claim 1 , wherein the solidified infiltrated tool is the wear strip.

13. A method of forming a wear resistant tool, comprising:

preparing a matrix by dispersing a plurality of diamond particles throughout a hard particulate material;

shaping the matrix into a desired shape; and

infiltrating the matrix with a binder material, wherein the binder material comprises a copper-based infiltrant and secures the hard particulate material and the diamond particles of the matrix together to form an infiltrated tool, wherein the infiltrated tool is selected from the group consisting of a drill bit body, a wear pad, and a wear strip, and

wherein, following solidifying of the infiltrated tool, the diamond particles comprise the largest component by volume of the infiltrated tool and comprise between about 35 percent and about 75 percent by volume of the infiltrated tool, wherein the diamond particles are substantially homogenously dispersed throughout the infiltrated tool, and wherein the diamond particles are configured to provide the primary defense against wear and erosion of the infiltrated tool.

14. The method as recited in claim 13 , wherein the diamond particles comprise synthetic diamond crystals.

15. The method as recited in claim 13 , wherein shaping the matrix comprises placing the matrix within a mold.

16. The method as recited in claim 13 , wherein the solidified infiltrated tool is the drill bit body.

17. The method as recited in claim 16 , further comprising securing a plurality of cutters to the solidified infiltrated drill bit body.

18. The method as recited in claim 13 , wherein the solidified infiltrated tool is the wear pad.

19. The method as recited in claim 13 , wherein the solidified infiltrated tool is the wear strip.

20. A wear resistant drilling tool, comprising:

a shank having a first end and a second end, the first end of the shank comprising a threaded connector; and

a solidified infiltrated drill bit body secured to the shank, the solidified infiltrated drill bit body comprising a matrix, the matrix comprising a hard particulate material, diamond, and a binder, wherein the diamond comprises between about 35 percent and about 75 percent by volume of the solidified infiltrated drill bit body, wherein the binder secures the hard particulate material and the diamond particles of the matrix together and is configured to prevent erosion of the solidified infiltrated drill bit body during drilling, wherein the diamond comprises the largest component by volume of the solidified infiltrated drill bit body, wherein the diamond is substantially homogenously dispersed throughout the solidified infiltrated drill bit body and wherein the diamond is configured to provide the primary defense against wear and erosion of the solidified infiltrated drill bit body.

21. The drilling tool as recited in claim 20 , wherein the diamond comprises synthetic diamonds particles.

22. The drilling tool as recited in claim 20 , further comprising a plurality of cutters secured to the solidified infiltrated drill bit body.

23. The drilling tool as recited in claim 20 , wherein the diamond comprises about 50% by volume of the solidified infiltrated drill bit body.

Assignments (22)