Graphene fluid utilized to suspend particulates

Patent metadata

Field	Value
Publication number	US-12404443-B2
Application number	US-202418627715-A
Country	US
Kind code	B2
Filing date	Apr 5, 2024
Priority date	Aug 22, 2022
Publication date	Sep 2, 2025
Grant date	Sep 2, 2025

Abstract

A composition including a particulate, water, and a suspension aid comprising graphene, wherein the graphene comprises bioderived renewable graphene (BRG) and wherein the particulate is suspended in the composition. Methods of making and using the composition are also provided.

First claim

What is claimed is:

1. A composition comprising:
a particulate;
water; and
a suspension aid comprising graphene, wherein the graphene comprises bioderived renewable graphene (BRG),
wherein the particulate is suspended in the composition,
wherein the composition comprises greater than or equal to 5 percent BRG by weight of water (% BRG bwow), and
wherein the suspended particulates remain suspended in the composition during free fluid testing, as measured according to API 10B-2, for at least 60 minutes.

2. The composition of claim 1 , wherein the graphene comprises graphene with a fused sheet-like morphology.

3. The composition of claim 1 , wherein the BRG comprises graphene derived from a plant.

4. The composition of claim 3 , wherein the plant comprises cassava.

5. The composition of claim 1 , wherein the particulate comprises sand, a weighting agent, rubber particles, a mechanical property modifier, iron oxide, polymer particles, glass spheres, a pozzolanic material, a lost circulation material, water insoluble particles, or a combination thereof.

6. The composition of claim 1 , wherein the suspension aid consists of or consists essentially of the BRG.

7. The composition of claim 1 , comprising greater than or equal to 10 percent BRG by weight of water (% BRG bwow).

8. The composition of claim 1 , wherein the particulate has a density of greater than or equal to that of water.

9. The composition of claim 1 , wherein the composition comprises a cement slurry.

10. The composition of claim 9 , wherein the particulate comprises a weighting agent.

11. The composition of claim 1 , wherein the particulate has an average diameter of less than or equal to about 5000 micrometers.

12. The composition of claim 1 , wherein the suspended particulates remain suspended in the composition during free fluid testing, as measured according to API 10B-2, for at least 120 minutes.

13. The composition of claim 1 , wherein the BRG and the particulate remains homogeneously dispersed during the free fluid testing.

14. The composition of claim 1 , wherein the BRG comprises a network of high surface area and pore volume sp2 bonded carbon nanosheets.

15. The composition of claim 14 , wherein the carbon nanosheets have a surface area of at least 2000 m 2 /g and/or a pore volume of at least 3.0 cc/g.

16. The composition of claim 14 , wherein the carbon nanosheets are a thermochemical activation product of an intermediate fused carbon material to exfoliate intercalated carbon layers of the intermediate fused carbon material and initiate chemical bonding of carbon atoms, and wherein the intermediate fused carbon material is a product of removing glycosidic linkages and water via chemical and/or thermal activation of a renewable carbohydrate material dehydrated after combination with a dehydration solvent.

17. A cement slurry comprising:
a particulate;
water; and
a suspension aid comprising graphene, wherein the graphene comprises bioderived renewable graphene (BRG),
wherein the particulate is suspended in the cement slurry,
wherein the cement slurry comprises greater than or equal to 5 percent BRG by weight of water (% BRG bwow); and
wherein the suspended particulate remains suspended in the cement slurry during free fluid testing, as measured according to API 10B-2, for at least 60 minutes.

18. The cement slurry of claim 17 , comprising greater than or equal to 10 percent BRG by weight of water (% BRG bwow).

19. The cement slurry of claim 17 , wherein the graphene comprises graphene with a fused sheet-like morphology.

20. A wellbore fluid comprising:
a particulate;
water; and
a suspension aid comprising graphene, wherein the graphene comprises bioderived renewable graphene (BRG),
wherein the particulate is suspended in the wellbore fluid,
wherein the wellbore fluid comprises greater than or equal to 5 percent BRG by weight of water (% BRG bwow), and
wherein the suspended particulate remains suspended in the wellbore fluid during free fluid testing, as measured according to API 10B-2, for at least 60 minutes.

Assignees

• Halliburton Energy Services Inc

Inventors

• Pisklak Thomas Jason
• Lewis Samuel J
• Pineda Claudia

Classifications

• C09K8/467 Primary

  containing additives for specific purposes · CPC title

• C04B40/0039 Primary

  Premixtures of ingredients · CPC title