Biodegradable retarder for cementing applications

• US 20060091572A1
• Filed: 11/02/2004
• Published: 05/04/2006
• Est. Priority Date: 11/02/2004
• Status: Active Grant

• Current Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Original Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Inventors: Reddy, B. Raghava, Brenneis, D. Chad, Santra, Ashok K.
• Granted Patent: US 8,858,860 B2
• Time in Patent Office: Days
• US Class Current: 264/31
• CPC Class Codes: C04B 14/062 Microsilica, e.g. colloïdal silica preparing microsilica slurries or suspensions C04B18/148
• CPC Class Codes: C04B 14/24 porous, e.g. foamed glass
• CPC Class Codes: C04B 18/082 Cenospheres
• CPC Class Codes: C04B 18/146 Silica fume
• CPC Class Codes: C04B 2103/0072 Biodegradable materials
• CPC Class Codes: C04B 2103/0074 Anti-static agents
• CPC Class Codes: C04B 2103/20 Retarders
• CPC Class Codes: C04B 2103/50 Defoamers, air detrainers
• CPC Class Codes: C04B 2111/10 Compositions or ingredients thereof characterised by the absence or the very low content of a specific material
• CPC Class Codes: C04B 22/0013 Boron compounds
• CPC Class Codes: C04B 24/06 containing hydroxy groups
• CPC Class Codes: C04B 24/10 Carbohydrates or derivatives thereof
• CPC Class Codes: C04B 24/2641 Polyacrylates; Polymethacrylates
• CPC Class Codes: C04B 24/38 Polysaccharides or derivatives thereof C04B24/243 takes precedence
• CPC Class Codes: C04B 28/02 containing hydraulic cements other than calcium sulfates
• CPC Class Codes: C09K 8/467 containing additives for specific purposes
• CPC Class Codes: Y02W 30/91 Use of waste materials as fillers for mortars or concrete

Abstract

Cement compositions comprising carboxylated inulin and methods of using the same to cement a workspace. In one embodiment, a method of cementing includes providing a cement composition comprising a carboxylated inulin, for example, in a subterranean formation. The method further includes allowing the cement composition to set. In some embodiments, the cement composition has a thickening time of from about 2 hours to about 11 hours. In other embodiments, the cement composition has a viscosity that is about constant for a period of time after the cement composition is placed.

Claims

1. A method of cementing comprising:

providing a cement composition comprising a carboxylated inulin; and

allowing the cement composition to set.

2. The method of claim 1 wherein the cement composition has a thickening time of from about 2 hours to about 11 hours at temperatures up to about 280°

F.

3. The method of claim 1 wherein a viscosity of the cement composition is about constant for a period of time after the cement composition is placed.

4. The method of claim 1 wherein a suspension aid is not added to the cement composition.

5. The method of claim 1 wherein the cement composition has a free water separation of from about 0.0 to about 2 wt. % of the cement composition.

6. The method of claim 1 wherein the carboxylated inulin is derived from an inulin having an average molecular weight of about 500 or higher.

7. The method of claim 1 wherein the carboxylated inulin comprises carboxymethylated inulin.

8. The method of claim 7 wherein the carboxymethylated inulin has a degree of substitution by carboxymethylated of from about 0.1 to about 0.3.

9. The method of claim 1 wherein the cement composition comprises from about 0.1 to about 5 wt. % of carboxylated inulin.

10. The method of claim 1 wherein the cement composition further comprises borate salts, an organic acid comprising an alpha-hydroxycarboxylic acid, a synthetic polymer comprising a carboxylate group, or any combination thereof.

11. The method of claim 1 wherein the cement composition is placed in a subterranean formation.

12. The method of claim 1 wherein the cement composition is placed in a wellbore.

13. A method of cementing in a subterranean formation comprising:

providing a cement composition comprising a carboxylated inulin;

placing the cement composition in the subterranean formation; and

allowing the cement composition to set therein.

14. The method of claim 13 wherein the cement composition has a thickening time of from about 2 hours to about 11 hours at temperatures up to about 280°

F.

15. The method of claim 13 wherein a viscosity of the cement composition is about constant for a period of time after the cement composition is placed.

16. The method of claim 13 wherein a suspension aid is not added to the cement composition.

17. The method of claim 13 wherein the cement composition has a free water separation of from about 0.0 to about 2 wt. % of the cement composition.

18. The method of claim 13 wherein the carboxylated inulin is derived from an inulin having an average molecular weight of about 500 or higher.

19. The method of claim 13 wherein the carboxylated inulin comprises carboxymethylated inulin.

20. The method of claim 19 wherein the carboxymethylated inulin has a degree of substitution by carboxymethylated of from about 0.1 to about 0.3.

21. The method of claim 13 wherein the cement composition comprises from about 0.1 to about 5 wt. % of carboxylated inulin.

22. The method of claim 13 wherein the cement composition further comprises borate salts, an organic acid comprising an alpha-hydroxycarboxylic acid, a synthetic polymer comprising a carboxylate group, or any combination thereof.

23. The method of claim 13 wherein the cement composition is placed in a wellbore.

24. A cement composition comprising cement and a carboxylated inulin.

25. The cement composition of claim 24 wherein the cement composition has a thickening time of from about 2 hours to about 11 hours at temperatures up to about 280°

F.

26. The cement composition of claim 24 wherein the cement composition has about a constant viscosity for a period of time under wellbore conditions.

27. The cement composition of claim 24 wherein the cement composition does not comprise a suspension aid.

28. The cement composition of claim 24 wherein the cement composition has a free water separation of from about 0.0 to about 2 wt. % of the cement composition.

29. The cement composition of claim 24 wherein the carboxylated inulin is derived from an inulin having an average molecular weight of about 500 or higher.

30. The cement composition of claim 24 wherein the carboxylated inulin is derived from an inulin processed from chicory.

31. The cement composition of claim 24 wherein the carboxylated inulin comprises carboxymethylated inulin.

32. The cement composition of claim 31 wherein the carboxymethylated inulin has a degree of substitution by carboxymethylated of from about 0.1 to about 0.3.

33. The cement composition of claim 24 wherein the cement composition comprises from about 0.1 to about 5 wt. % of carboxylated inulin.

34. The cement composition of claim 24 wherein the cement composition further comprises borate salts, an organic acid comprising an alpha-hydroxycarboxylic acid, a synthetic polymer comprising a carboxylate group, or any combination thereof.

35. A cement composition comprising a cement and a carboxylated inulin and having a free water separation of from about 0.0 to about 2 wt. % of the cement composition at temperatures up to about 280°

F.

36. The cement composition of claim 35 wherein the cement composition has a thickening time of from about 2 hours to about 11 hours at temperatures up to about 280°

F.

37. The cement composition of claim 35 wherein the cement composition has a thickening time of from about 3 hours to about 8 hours at temperatures up to about 280°

F.

38. The cement composition of claim 35 wherein the cement composition has about a constant viscosity for a period of time under wellbore conditions.

39. The cement composition of claim 35 wherein the carboxylated inulin comprises carboxymethylated inulin.

40. The cement composition of claim 39 wherein the carboxymethylated inulin has a degree of substitution by carboxymethylated of from about 0.1 to about 0.3.

41. The cement composition of claim 35 wherein the cement composition comprises from about 0.1 to about 5 wt. % of carboxylated inulin.

42. The cement composition of claim 35 wherein the cement composition further comprises borate salts, an organic acid comprising an alpha-hydroxycarboxylic acid, a synthetic polymer comprising a carboxylate group, or any combination thereof.