IP Library › Granted Patent US 9,714,371
Granted Patent B2
US 9,714,371 · App. 12/759,469 · Granted Jul 25, 2017

Method for making particulate slurries and particulate slurry compositions

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Quick Facts
Patent No.
US 9,714,371
App. No.
12/759,469
Granted
Jul 25, 2017
Kind
B2
Abstract

An aqueous slurry composition for use in industries such as the petroleum and pipeline industries includes a particulate, an aqueous liquid and a chemical compound that renders the particulate surface extremely hydrophobic. The slurry is produced by rendering the surface of the particulate extremely hydrophobic during or before making the slurry.

Claims (47)

1. An aqueous hydraulic fracturing slurry composition for use in hydraulic fracturing operations comprising:

(a) water;

(b) inorganic particulates ranging in size from about 10 to about 100 US mesh; and

(c) a chemical compound for rendering the surface of the particulates extremely hydrophobic,

wherein the chemical compound is selected from the group consisting of polysiloxanes modified with one or more organic cationic groups, polysiloxanes modified with one or more organic amphoteric groups, quaternary silanes, and combinations thereof,

and further wherein the aqueous hydraulic fracturing slurry composition is free of a viscosifier such that the aqueous hydraulic fracturing slurry composition suspends the particulates under static and dynamic conditions.

2. The composition of claim 1 , wherein the chemical compound is a polysiloxane modified with one or more organic amphoteric groups.

3. The composition of claim 1 , wherein the chemical compound is a polysiloxane modified with one or more organic cationic groups.

4. The composition of claim 1 , wherein the chemical compound is a quaternary silane.

5. The composition of claim 1 , wherein the chemical compound is a polysiloxane having the formula

wherein each of R 1 to R 6 and R 8 to R 10 represents an organic radical containing 1-6 carbon atoms, typically a methyl group, R 7 represents an organic amphoteric group and m and n are from 1 to 200.

6. The composition of claim 1 , wherein the chemical compound is a polysiloxane having the formula

wherein each of R 1 to R 6 and R 8 to R 10 represents an organic radical containing 1-6 carbon atoms, typically a methyl group, R 7 represents an organic cationic group and m and n are from 1 to 200.

7. The composition of claim 1 , wherein the chemical compound is a polysiloxane having the formula

where R 12 to R 17 each represents an organic radical containing 1-6 carbon atoms, typically a methyl group, one of R 11 and R 18 represents an organic amphoteric group and the other of R 11 and R 18 represents an organic amphoteric group or an organic radical and m is from 1 to 200.

8. The composition of claim 1 , wherein the chemical compound is a polysiloxane having the formula

where R 12 to R 17 each represents an organic radical containing 1-6 carbon atoms, typically a methyl group, one of R 11 and R 18 represents an organic cationic group and the other of R 11 and R 18 represents an organic cationic group or an organic radical and m is from 1 to 200.

9. The composition of any one of claims 1 to 4 and 5 to 8 , wherein the particulates are sand proppants.

10. The composition of any one of claims 1 to 4 and 5 to 8 , wherein the particulates are ceramic particulates.

11. The aqueous hydraulic fracturing slurry composition of claim 1 further comprising a gas.

12. The composition of claim 11 , wherein the chemical compound is a polysiloxane modified with one or more organic amphoteric groups.

13. The composition of claim 11 , wherein the chemical compound is a polysiloxane modified with one or more organic cationic groups.

14. The composition of claim 11 , wherein the chemical compound is a polysiloxane having the formula

wherein each of R 1 to R 6 and R 8 to R 10 represents an organic radical containing 1-6 carbon atoms, typically a methyl group, R 7 represents an organic amphoteric group and m and n are from 1 to 200.

15. The composition of claim 11 , wherein the chemical compound is a polysiloxane having the formula

wherein each of R 1 to R 6 and R 8 to R 10 represents an organic radical containing 1-6 carbon atoms, typically a methyl group, R 7 represents an organic cationic group and m and n are from 1 to 200.

16. The composition of claim 11 , wherein the chemical compound is a polysiloxane having the formula

where R 12 to R 17 each represents an organic radical containing 1-6 carbon atoms, typically a methyl group, one of R 11 and R 18 represents an organic amphoteric group and the other of R 11 and R 18 represents an organic amphoteric group or an organic radical and m is from 1 to 200.

17. The composition of claim 11 , wherein the chemical compound is a polysiloxane having the formula

where R 12 to R 17 each represents an organic radical containing 1-6 carbon atoms, typically a methyl group, one of R 11 and R 18 represents an organic cationic group and the other of R 11 and R 18 represents an organic cationic group or an organic radical and m is from 1 to 200.

18. The composition of claim 11 , wherein the gas is selected from a group consisting of air, nitrogen, carbon dioxide, methane and mixtures thereof.

19. The composition of claim 11 , wherein the particulates are sand proppants and wherein the gas is nitrogen or carbon dioxide.

20. The composition of claim 1 , wherein the water is re-used water after flow back from a well.

21. The composition of claim 11 , wherein the water is re-used water after flow back from a well.

22. The composition of claim 6 , wherein the water is re-used water after flow back from a well.

23. The composition of claim 6 , wherein each of R 1 to R 6 and R 8 to R 10 is a methyl group.

24. The composition of claim 6 , further comprising a gas.

25. The composition of claim 23 , wherein the water is re-used water after flow back from the well.

26. The composition of claim 24 , wherein the water is re-used water after flow back from the well.

27. A method of transporting proppants into a subterranean formation, comprising pumping the composition of claim 1 into the subterranean formation.

28. A method of transporting proppants into a subterranean formation, comprising pumping the composition of claim 6 into the subterranean formation.

29. A method of transporting proppants into a subterranean formation, comprising pumping the composition of claim 11 into the subterranean formation.

30. A method of transporting proppants into a subterranean formation, comprising pumping the composition of claim 3 into the subterranean formation.

31. A method of transporting proppants into a subterranean formation, comprising pumping the composition of claim 24 into the subterranean formation.

32. The composition of claim 3 , wherein the water is re-used water after flow back from a well.

33. The composition of claim 11 , wherein the particulates are sand proppants and wherein the gas is nitrogen or carbon dioxide.

34. The composition of claim 24 , wherein the particulates are sand proppants and wherein the gas is nitrogen or carbon dioxide.

Assignments (2)
SECURITY INTEREST Recorded Jun 2, 2022
From: FEDORA, BRADLEY P.D.
To: OLYMPIA TRUST COMPANY
Reel/Frame 060087/0101 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 22, 2016
From: ZHANG, KEWEI
To: TRICAN WELL SERVICE LTD.
Reel/Frame 040747/0481 →