IP Library › Granted Patent US 12,350,792
Granted Patent B2
US 12,350,792 · App. 16/667,098 · Granted Jul 8, 2025

Polycrystalline diamond, polycrystalline diamond compacts, methods of making same, and applications

Inventors: Kenneth E. Bertagnolli (Riverton, UT); Jiang Qian (Cedar Hills, UT); Jason K. Wiggins (Draper, UT); Michael A. Vail (Genola, UT); Debkumar Mukhopadhyay (Sandy, UT); Brandon P. Linford (Draper, UT)
Assignee: US SYNTHETIC CORPORATION
B24D3/10C22C26/00E21B10/567F16C33/043F16C33/26B22F2005/001F16C17/02F16C17/04F16C2352/00
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Quick Facts
Patent No.
US 12,350,792
App. No.
16/667,098
Granted
Jul 8, 2025
Kind
B2
Abstract

Embodiments of the invention relate to polycrystalline diamond compacts (“PDC”) exhibiting enhanced diamond-to-diamond bonding. In an embodiment, a PDC includes a polycrystalline diamond (“PCD”) table bonded to a substrate. At least a portion of the PCD table includes a plurality of diamond grains defining a plurality of interstitial regions. The plurality of interstitial regions includes a metal-solvent catalyst. The plurality of diamond grains exhibit an average grain size of about 30 μm or less. The plurality of diamond grains and the metal-solvent catalyst collectively exhibit an average electrical conductivity of less than about 1200 S/m. Other embodiments are directed to PCD, employing such PCD, methods of forming PCD and PDCs, and various applications for such PCD and PDCs in rotary drill bits, bearing apparatuses, and wire-drawing dies.

Claims (55)

1. A polycrystalline diamond compact, comprising:

a polycrystalline diamond table, at least an unleached portion of the polycrystalline diamond table including:

a plurality of diamond grains directly bonded together via diamond-to-diamond bonding to define a plurality of interstitial regions, the plurality of diamond grains exhibiting an average grain size of about 10 μm to about 50 μm;

a catalyst occupying at least a portion of the plurality of interstitial regions;

a portion of the plurality of diamond grains and the metal-solvent catalyst collectively exhibit a coercivity of about 115 Oe to about 250 Oe;

the portion of the plurality of diamond grains and the metal-solvent catalyst collectively exhibiting a specific magnetic saturation of about 5 G·cm 3 /g to about 15 G·cm 3 /g;

wherein the unleached portion of the polycrystalline diamond table exhibits an average electrical conductivity of about 25 S/m to about 1200 S/m;

wherein the polycrystalline diamond table exhibits at least one of a G ratio of at least about 4.0×10 6 or a thermal stability, as determined by distance cut, prior to failure in a vertical lathe test, of at least about 1300 m; and

a substrate bonded to the polycrystalline diamond table.

2. The polycrystalline diamond compact of claim 1 , wherein the average grain size of the plurality of diamond grains is about 10 μm to about 30 μm.

3. The polycrystalline diamond compact of claim 1 , wherein the average grain size of the plurality of diamond grains is about 10 μm to about 18 μm.

4. The polycrystalline diamond compact of claim 1 , wherein the average electrical conductivity of the unleached portion of the polycrystalline diamond table is about 25 S/m to about 1000 S/m.

5. The polycrystalline diamond compact of claim 1 , wherein the average electrical conductivity of the unleached portion of the polycrystalline diamond table is about 25 S/m to about 750 S/m.

6. The polycrystalline diamond compact of claim 1 , wherein the average electrical conductivity of the unleached portion of the polycrystalline diamond table is about 100 S/m to about 500 S/m.

7. The polycrystalline diamond compact of claim 1 , wherein the polycrystalline diamond table exhibits a thermal stability, as determined by a distance cut, prior to failure, in a vertical lathe test of about 1300 m to about 3950 m.

8. The polycrystalline diamond compact of claim 7 , wherein the unleached portion of the polycrystalline diamond table exhibits the G ratio of at least 4.0×10 6 .

9. The polycrystalline diamond compact of claim 8 , wherein the G ratio of the unleached portion of the polycrystalline diamond table is greater than about 15.0×10 6 .

10. The polycrystalline diamond compact of claim 1 , wherein the coercivity of the unleached portion of the polycrystalline diamond table is about 115 Oe to about 175 Oe.

11. The polycrystalline diamond compact of claim 1 , wherein the specific magnetic saturation of the unleached portion of the polycrystalline diamond table is about 10 G·cm 3 /g to about 15 G·cm 3 /g.

12. The polycrystalline diamond compact of claim 1 , wherein the polycrystalline diamond table exhibits the thermal stability, as determined by a distance cut, prior to failure, in a vertical lathe test of at least about 1300 m.

13. The polycrystalline diamond compact of claim 1 , wherein the unleached portion of the polycrystalline diamond table exhibits a coercivity of about 155 Oe to about 175 Oe, a specific magnetic saturation of about 10 G·cm 3 /g to about 15 G·cm 3 /g, and the average electrical conductivity of the unleached portion of the polycrystalline diamond table is about 25 S/m to about 750 S/m.

14. The polycrystalline diamond compact of claim 1 , wherein the unleached portion of the polycrystalline diamond table exhibits a coercivity of about 130 Oe to about 160 Oe, and the average electrical conductivity of the unleached portion of the polycrystalline diamond table is about 50 S/m to about 750 S/m.

15. The polycrystalline diamond compact of claim 1 , wherein the unleached portion of the polycrystalline diamond table exhibits a specific permeability of less than about 0.10 G·cm 3 /g·Oe.

16. A rotary drill bit, comprising:

a bit body including a leading end structure configured to facilitate drilling a subterranean formation; and

a plurality of cutting elements mounted to the bit body, at least one of the plurality of cutting elements including the polycrystalline diamond compact according to claim 1 .

17. A polycrystalline diamond compact, comprising:

a polycrystalline diamond table, at least an unleached portion of the polycrystalline diamond table including:

a plurality of diamond grains directly bonded together via diamond-to-diamond bonding to define a plurality of interstitial regions, the plurality of diamond grains exhibiting an average grain size of about 30 μm or less;

a catalyst occupying at least a portion of the plurality of interstitial regions;

an average electrical conductivity of about 25 S/m to about 1200 S/m;

a coercivity of about 115 Oe to about 250 Oe;

a specific magnetic saturation of about 5 G·cm 3 /g to about 15 G·cm 3 /g; and

a substrate bonded to the polycrystalline diamond table; and

a G ratio of at least about 4.0×10 6 .

18. A rotary drill bit, comprising:

a bit body including a leading end structure configured to facilitate drilling a subterranean formation; and

a plurality of cutting elements mounted to the bit body, at least one of the plurality of cutting elements including the polycrystalline diamond compact according to claim 17 .

19. A polycrystalline diamond compact, comprising:

a polycrystalline diamond table sintered exhibiting one or more characteristics of being sintered at a cell pressure of at least about 7.5 GPa, at least an unleached portion of the polycrystalline diamond table including:

a plurality of diamond grains bonded together via diamond-to-diamond bonding to define a plurality of interstitial regions, the plurality of diamond grains exhibiting an average grain size of about 10 μm to about 18 μm; and

a catalyst including cobalt, the catalyst occupying at least a portion of the plurality of interstitial regions;

an average electrical conductivity of about 25 S/m to about 1200 S/m;

a coercivity of about 115 Oe to about 175 Oe;

a specific magnetic saturation of about 10 G·cm 3 /g to about 15 G·cm 3 /g or less;

a specific permeability less than about 0.10 G·cm 3 /g·Oe; and

a thermal stability, as determined by distance cut, prior to failure in a vertical lathe test, of at least about 1300 m; and

a substrate bonded to the polycrystalline diamond table along an interfacial surface.

20. The polycrystalline diamond compact of claim 19 , wherein the unleached portion of the polycrystalline diamond table exhibits a G ratio of at least about 4.0×10 6 .

21. A rotary drill bit, comprising:

a bit body including a leading end structure configured to facilitate drilling a subterranean formation; and

a plurality of cutting elements mounted to the bit body, at least one of the plurality of cutting elements including the polycrystalline diamond compact according to claim 19 .

22. The polycrystalline diamond compact of claim 17 wherein at least the unleached portion of the polycrystalline diamond table includes a catalyst content of the catalyst of about 1 weight % to about 7.5 weight %.

23. The polycrystalline diamond compact of claim 20 wherein at least the unleached portion of the polycrystalline diamond table includes a catalyst content of the catalyst of about 3 weight % to about 7.5 weight %.

24. The polycrystalline diamond compact of claim 1 wherein the plurality of diamond grains exhibit single mode grain size distribution.

Assignments (5)
SECURITY INTEREST Recorded Jul 18, 2025
From: US SYNTHETIC CORPORATION
To: KEYBANK NATIONAL ASSOCIATION
Reel/Frame 074973/0089 →
RELEASE OF SECURITY INTEREST IN PATENTS Recorded Jul 17, 2025
From: JPMORGAN CHASE BANK, N.A.
To: CHAMPIONX LLC; APERGY ESP SYSTEMS, LLC; APERGY BMCS ACQUISITION CORP; HARBISON-FISCHER, INC.; NORRIS RODS, INC.,; NORRIS RODS, INC.,; NORRISEAL-WELLMARK, INC.; PCS FERGUSON, INC.; QUARTZDYNE, INC.; US SYNTHETIC CORPORATION
Reel/Frame 072004/0019 →
RELEASE OF SECURITY INTEREST Recorded Jun 7, 2022
From: BANK OF AMERICA, N.A.
To: ACE DOWNHOLE, LLC; HARBISON-FISCHER, INC.; NORRIS RODS, INC.; PCS FERGUSON, INC.; QUARTZDYNE, INC.; SPIRIT GLOBAL ENERGY SOLUTIONS, INC.; THETA OILFIELD SERVICES, INC.; APERGY BMCS ACQUISITION CORP.; NORRISEAL-WELLMARK, INC.; US SYNTHETIC CORPORATION; WINDROCK, INC.
Reel/Frame 060305/0001 →
SECURITY INTEREST Recorded Apr 30, 2021
From: APERGY ESP SYSTEMS, LLC; APERGY BMCS ACQUISITION CORPORATION; CHAMPIONX USA INC.; HARBISON-FISCHER, INC.; NORRIS RODS, INC.; NORRISEAL-WELLMARK, INC.; PCS FERGUSON, INC.; QUARTZDYNE, INC.; US SYNTHETIC CORPORATION; WINDROCK, INC.
To: JPMORGAN CHASE BANK, N.A.
Reel/Frame 056106/0007 →
SECURITY INTEREST Recorded Jun 5, 2020
From: ACE DOWNHOLE, LLC; APERGY BMCS ACQUISITION CORP.; HARBISON-FISCHER, INC.; NORRIS RODS, INC.; NORRISEAL-WELLMARK, INC.; PCS FERGUSON, INC.; QUARTZDYNE, INC.; SPIRIT GLOBAL ENERGY SOLUTIONS, INC.; THETA OILFIELD SERVICES, INC.; US SYNTHETIC CORPORATION; WINDROCK, INC.
To: BANK OF AMERICA, N.A.
Reel/Frame 053790/0001 →
Continuity (5)
Continuation 15080379 · Mar 24, 2016
Continuation 13486578 · Jun 1, 2012
Continuation In Part 12858906 · Aug 18, 2010
Division 12244960 · Oct 3, 2008
Related Publication 20200130141A1 · Apr 30, 2020
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