High pressure jets for leaching catalysts from a polycrystalline diamond compact

Patent metadata

Field	Value
Publication number	US-9963348-B2
Application number	US-201414434520-A
Country	US
Kind code	B2
Filing date	Jun 4, 2014
Priority date	Jun 4, 2014
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

Apparatuses and methods for leaching catalysts from a polycrystalline diamond compact (PDC) may utilize a high pressure jet. For example, a method may include impinging a jet of leaching fluid, including one or both of an acid and a caustic material, on a surface of a PDC disposed on a substrate at a fluid pressure ranging between 125 psi and 10,000.

First claim

What is claimed is:

1. A method comprising:
impinging a jet of leaching fluid, including one or both of an acid or a caustic material, on a surface of a polycrystalline diamond compact (PDC) disposed on a substrate, wherein the jet of leaching fluid comprises a fluid pressure between 125 psi and 10,000 psi and the jet of leaching fluid comprises a speed of 150 ft/s or greater.

2. The method of claim 1 further comprising:
impinging the jet on the surface of the PDC at an angle of between 30° and 80° relative to the surface of the PDC.

3. The method of claim 1 further comprising:
providing the leaching fluid with a viscosity of between 0.5 cP and 20 cP.

4. The method of claim 1 further comprising:
providing the leaching fluid at a temperature of between room temperature and a boiling point of the leaching fluid.

5. The method of claim 1 further comprising:
introducing cavitation into the jet.

6. The method of claim 1 further comprising:
submerging the surface of the PDC in a fluid.

7. The method of claim 6 further comprising:
providing the fluid in which the PDC is submerged includes the leaching fluid.

8. The method of claim 7 further comprising:
cycling the fluid through a fluid handling system of a jet system that produces the jet.

9. The method of claim 1 further comprising:
generating the jet with a nozzle having a nozzle tip; and
submerging the surface of the PDC and the nozzle tip in a fluid.

10. The method of claim 1 further comprising:
generating the jet with a nozzle having a nozzle tip and jet orifice that has a nozzle orifice diameter and is defined in the nozzle tip; and
arranging the nozzle tip within twenty nozzle orifice diameters of the surface of the PDC.

11. The method of claim 1 further comprising:
providing an air pressure greater than atmospheric pressure around the surface of the PDC and the jet.

12. A method comprising:
impinging a jet of leaching fluid, including one or both of an acid or a caustic material, on a surface of a polycrystalline diamond compact (PDC) disposed on a substrate, wherein the jet of leaching fluid comprises a speed of 150 ft/s or greater.

13. A method comprising:
impinging a jet of leaching fluid, including one or both of an acid or a caustic material, on a surface of a polycrystalline diamond compact (PDC) disposed on a substrate, wherein the jet of leaching fluid comprises a fluid pressure between 125 psi and 10,000 psi;
generating the jet with a nozzle having a nozzle tip; and
submerging the surface of the PDC and the nozzle tip in a fluid.

14. The method of claim 13 further comprising:
impinging the jet on the surface of the PDC at an angle of between 30° and 80° relative to the surface of the PDC.

15. The method of claim 13 further comprising:
providing the leaching fluid with a viscosity of between 0.5 cP and 20 cP.

16. The method of claim 13 further comprising:
providing the leaching fluid at a temperature of between room temperature and a boiling point of the leaching fluid.

17. The method of claim 13 further comprising:
introducing cavitation into the jet.

18. The method of claim 13 further comprising:
providing an air pressure greater than atmospheric pressure around the surface of the PDC and the jet.

Assignees

• Halliburton Energy Services Inc

Inventors

• Weaver Gary E

Classifications

• C22C26/00

  Alloys containing diamond {or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes} · CPC title

• B22F7/06

  of composite workpieces or articles from parts, e.g. to form tipped tools {(B22F7/002 takes precedence)} · CPC title

• C01B32/28 Primary

  After-treatment, e.g. purification, irradiation, separation or recovery · CPC title

• B05B14/00

  Arrangements for collecting, re-using or eliminating excess spraying material (arrangements integral with nozzles B05B1/28) · CPC title

• B22F2999/00

  Aspects linked to processes or compositions used in powder metallurgy · CPC title