Degradable grip

Patent metadata

Field	Value
Publication number	US-10989015-B2
Application number	US-201615762701-A
Country	US
Kind code	B2
Filing date	Sep 21, 2016
Priority date	Sep 23, 2015
Publication date	Apr 27, 2021
Grant date	Apr 27, 2021

Abstract

A method includes pressing a blend of materials; and forming a degradable grip from the pressed blend of materials. The blend of materials includes a non-degradable material that is not degradable in an aqueous environment and an aqueous degradable alloy material. The pressing step includes using a high pressure and high temperature press.

First claim

What is claimed is:

1. A method comprising:
pressing a blend of materials wherein the materials comprise a non-degradable material that is not degradable in an aqueous environment and an aqueous degradable alloy material;
sintering the pressed blend of materials; and
forming a degradable grip from the pressed blend of materials,
wherein the pressing step comprises using a high pressure and high temperature press that achieves pressures of an order of about 6,900 MPa or more, and temperatures of an order of 1,000 degrees C. or more.

2. The method of claim 1 wherein the degradable alloy material comprises aluminum and one or more metals selected from a group consisting of alkali metals, alkaline earth metals, group 12 transition metals, and basic metals having an atomic number equal to or greater than 31.

3. The method of claim 1 wherein the non-degradable material comprises polycrystalline diamond (PCD).

4. The method of claim 1 wherein the non-degradable material comprises polycrystalline cubic boron nitride (PCBN).

5. The method of claim 1 wherein the non-degradable material comprises a ceramic.

6. The method of claim 1 wherein the degradable grip comprises a Vickers hardness in excess of 100.

7. The method of claim 1 wherein the degradable grip comprises a Vickers hardness in excess of 200.

8. The method of claim 1 comprising nitriding the pressed blend of materials.

9. The method of claim 1 wherein the forming comprises forming at least one degradable tooth.

10. The method of claim 1 wherein the forming comprises forming at least one degradable button.

11. The method of claim 1 wherein the forming comprises forming at least one degradable ridge.

12. The method of claim 1 comprising assembling at least a portion of a borehole tool using the degradable grip.

13. The method of claim 1 wherein the aqueous degradable alloy material comprises gallium.

14. A degradable grip comprising:
a degradable matrix that is degradable in an aqueous environment,
wherein the degradable matrix comprises a water-reactive material that generates hydrogen to cause breaking of the degradable matrix in the aqueous environment; and
non-degradable particles disposed at least in part within the matrix,
wherein the non-degradable particles are not degradable in the aqueous environment, and
wherein the degradable grip comprises a Vickers hardness in excess of 100.

15. The degradable grip of claim 14 , further comprising teeth.

16. The degradable grip of claim 14 , further comprising a button.

17. An assembly comprising:
a plurality of components, wherein at least one of the components comprises a degradable grip that comprises:
a degradable matrix that is degradable in an aqueous environment,
wherein the degradable matrix comprises a water-reactive material that generates hydrogen to cause breaking of the degradable matrix in the aqueous environment; and
non-degradable particles disposed at least in part within the matrix,
wherein the non-degradable particles are not degradable in the aqueous environment, and
wherein the degradable grip comprises a Vickers hardness in excess of 100.

18. The assembly of claim 17 wherein the assembly comprises a borehole tool.

Assignees

• Schlumberger Technology Corp

Inventors

• Roy Indranil

Classifications

• E21B2200/08

  Down-hole devices using materials which decompose under well-bore conditions · CPC title

• B22F5/08

  of toothed articles, e.g. gear wheels; of cam discs · CPC title

• E21B23/01

  for anchoring the tools or the like (E21B23/02 - E21B23/06 take precedence; anchoring of drives in the borehole E21B4/18) · CPC title

• E21B33/129 Primary

  with mechanical slips for hooking into the casing (E21B33/122, E21B33/124 take precedence) · CPC title

• C22C26/00

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