Swellable downhole structures including carbon nitride materials, and methods of forming and using such structures

Patent metadata

Field	Value
Publication number	US-2016348462-A1
Application number	US-201615234321-A
Country	US
Kind code	A1
Filing date	Aug 11, 2016
Priority date	Dec 24, 2013
Publication date	Dec 1, 2016
Grant date	—

Abstract

A swellable downhole article includes a swellable material and a carbon nitride material. The swellable material may include at least one of an elastomeric material and an absorbent material. The carbon nitride material may remove cations from a downhole fluid. Methods of forming the swellable downhole article are also disclosed, as are methods of forming a carbon nitride containing material for removing contaminants from a fluid.

First claim

1 . A method of forming a material for removing contaminants from a fluid, the method comprising:
providing a carbon nitride material having a structure comprising vacancies between triazine rings of the carbon nitride material; mixing the carbon nitride material with at least one of an elastomeric material, polyurethane, polyurea, polyamine, carbon black, graphite, carbon fiber, glass fiber, silica, a clay, calcium carbonate, bentonite, polytetrafluoroethylene, and molybdenum disulfide; and forming at least one of a filter or a membrane comprising the carbon nitride material, wherein the at least one of a filter or a membrane comprises between about fifteen percent by weight and about thirty-five percent by weight of the carbon nitride material.

2 . The method of claim 1 , further comprising disposing the carbon nitride material within a housing configured to contain the carbon nitride material.

3 . The method of claim 1 , further comprising selecting the elastomeric material to comprise one or more of acrylonitrile butadiene styrene, polyacrylonitrile, a nitrile-based elastomer, or combinations thereof.

4 . The method of claim 1 , further comprising selecting the carbon nitride material to comprise a C 3 N 4 polymer material.

5 . The method of claim 1 , further comprising selecting the carbon nitride material to comprise graphitic carbon nitride.

6 . The method of claim 1 , further comprising selecting the carbon nitride material to comprise particles having an average particle diameter between about 100 nm and about 1,000 nm.

7 . The method of claim 1 , further comprising functionalizing the carbon nitride material with hydrophobic groups.

8 . The method of claim 1 , further comprising functionalizing the carbon nitride material with alkyl groups, vinyl groups, epoxide groups, silane groups, carboxyl groups, pyridine groups, phenolic groups, or combinations thereof.

9 . An article for removing contaminants from a fluid, the article comprising:
at least one of a nitrile-based elastomer, acrylonitrile butadiene styrene, polyacrylonitrile, polyurethane, polyurea, a polyamine, or combinations thereof; and between about 5 weight percent and about 100 weight percent carbon nitride, the carbon nitride comprising a plurality of triazine rings.

10 . The article of claim 9 , further comprising at least one absorbent material.

11 . The article of claim 9 , further comprising a cellulose material.

12 . The article of claim 9 , further comprising at least one of carbon black, graphite, carbon fiber, glass fiber, silica, a clay, calcium carbonate, bentonite, polytetrafluoroethylene, and molybdenum disulfide.

13 . The article of claim 9 , wherein the article comprises at least a portion of a membrane, a filter, or a swellable material.

14 . The article of claim 9 , wherein the article comprises between about 15 weight percent and about 35 weight percent carbon nitride.

15 . The article of claim 9 , wherein the article comprises between about 35 weight percent and about 50 weight percent carbon nitride.

16 . The article of claim 9 , wherein the carbon nitride is functionalized with alkyl groups, vinyl groups, epoxide groups, silane groups, carboxyl groups, pyridine groups, phenolic groups, or combinations thereof.

17 . The article of claim 9 , wherein the carbon nitride comprises a C 3 N 4 polymer material.

18 . The article of claim 9 , further comprising an acrylic resin binder, an acrylic polymer, or a combination thereof.

19 . A method of forming a material for removing contaminants from a fluid, the method comprising:
mixing carbon nitride with at least one of a nitrile-based elastomer, acrylonitrile butadiene styrene, polyacrylonitrile, polyurethane, polyurea, a polyamine, or combinations thereof to form a carbon nitride material comprising between about 5 weight percent and about 100 weight percent carbon nitride; and forming at least one of a filter, a membrane, or a swellable material comprising the carbon nitride material.

20 . The method of claim 19 , further comprising reacting terminal amino groups of the carbon nitride with polyurethane, polyurea, a polyamine, or combinations thereof.

Assignees

• Baker Hughes Inc

Inventors

• Mazyar Oleg A
• Khabashesku Valery N

Classifications

• C09K8/44

  containing organic binders only · CPC title

• B29C44/3484

  Stopping the foaming reaction until the material is heated or re-heated · CPC title

• E21B33/12

  Packers; Plugs (used for cementing E21B33/134, E21B33/16) · CPC title

• B29K2009/00

  Use of rubber derived from conjugated dienes, as moulding material · CPC title

• B29C44/005

  Avoiding skin formation; Making foams with porous surfaces · CPC title