Cement Set Activators For Set-Delayed Cement Compositions and Associated Methods

• US 20160075933A1
• Filed: 11/24/2015
• Published: 03/17/2016
• Est. Priority Date: 03/09/2012
• Status: Active Grant

• Current Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Original Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Inventors: Brothers, Lance E., Boul, Peter J., Morgan, Ronnie G., Otieno, Pauline A., Agapiou, Kyriacos, Pisklak, Thomas J.
• Granted Patent: US 9,909,051 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: C04B 14/06 Quartz; Sand
• CPC Class Codes: C04B 14/062 Microsilica, e.g. colloïdal silica preparing microsilica slurries or suspensions C04B18/148
• CPC Class Codes: C04B 14/16 porous, e.g. pumice
• CPC Class Codes: C04B 20/023 Chemical treatment
• CPC Class Codes: C04B 2103/12 Set accelerators
• CPC Class Codes: C04B 2103/22 Set retarders
• CPC Class Codes: C04B 2103/408 Dispersants
• CPC Class Codes: C04B 2111/1037 Cement free compositions, e.g. hydraulically hardening mixtures based on waste materials, not containing cement as such
• CPC Class Codes: C04B 22/147 Alkali-metal sulfates; Ammonium sulfate
• CPC Class Codes: C04B 22/16 containing phosphorus in the anion, e.g. phosphates
• CPC Class Codes: C04B 24/003 Phosphorus-containing compounds
• CPC Class Codes: C04B 24/006 Boron-containing compounds
• CPC Class Codes: C04B 24/163 obtained by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: C04B 24/18 Lignin sulfonic acid or derivatives thereof, e.g. sulfite lye
• CPC Class Codes: C04B 24/22 Condensation or polymerisation products thereof
• CPC Class Codes: C04B 24/2641 Polyacrylates; Polymethacrylates
• CPC Class Codes: C04B 24/383 Cellulose or derivatives thereof
• CPC Class Codes: C04B 28/10 Lime cements or magnesium oxide cements
• CPC Class Codes: C04B 28/18 containing mixtures of the silica-lime type
• CPC Class Codes: C04B 40/0658 Retarder inhibited mortars activated by the addition of accelerators or retarder-neutralising agents
• CPC Class Codes: C04B 7/34 : Hydraulic lime cements; Roman cements ; natural cements
• CPC Class Codes: C09K 2208/10 : Nanoparticle-containing well treatment fluids
• CPC Class Codes: C09K 8/428 : for squeeze cementing, e.g. for repairing
• CPC Class Codes: C09K 8/467 : containing additives for specific purposes
• CPC Class Codes: E21B 33/13 : Methods or devices for cementing, for plugging holes, crevices or the like

Abstract

Disclosed herein are cement compositions and methods of using set-delayed cement compositions in subterranean formations. A method of cementing in a subterranean formation, may comprise providing a set-delayed cement composition comprising water, pumice, hydrated lime, and a set retarder, activating the set-delayed cement composition with a cement set activator, wherein the cement set activator comprises at least one activator selected from the group consisting of nanosilica, a polyphosphate, and combinations thereof, introducing the set-delayed cement composition into a subterranean formation, and allowing the set-delayed cement composition to set in the subterranean formation.

Claims

1. An activated set-delayed cement composition comprising:

water;

pumice;

hydrated lime;

a set retarder; and

a cement set activator, wherein the cement set activator comprises at least one activator selected from the group consisting of nanosilica, a polyphosphate, and combinations thereof.

2. The composition of claim 1 wherein the cement set activator is present in the activated set-delayed cement composition in an amount of about 0.1% to about 20% by weight of the activated set-delayed cement composition.

3. The composition of claim 1 wherein the cement set activator comprises the combination of a monovalent salt and the polyphosphate.

4. The composition of claim 3 wherein the polyphosphate comprises sodium hexametaphosphate.

5. The composition of claim 3 wherein the monovalent salt comprises sodium sulfate.

6. The composition of claim 3 wherein the ratio of the monovalent salt to the polyphosphate is from about 2:

1 to about 1;

25.

7. The composition of claim 1 wherein the set retarder comprises at least one retarder selected from the group consisting of a phosphate, a phosphonate, a phosphonic acid, a phosphonic acid derivative, a lignosulfonate, a salt, an organic acid, a carboxymethylated hydroxyethylated cellulose, a synthetic co- or ter-polymer comprising sulfonate and carboxylic acid groups, a borate compound, and any mixture thereof.

8. The composition of claim 1 wherein the activated set-delayed cement composition further comprises a dispersant.

9. The composition of claim 1 wherein the cement set activator comprises nanosilica and wherein the nanosilica has been stabilized by at least one nanosilica stabilizer selected from the group consisting of:

sodium oxide, potassium oxide, lithium oxide, an amine, and any combination thereof.

10. The composition of claim 1 wherein the set retarder comprises at least one retarder selected from the group consisting of a methylene phosphonic acid derivative and a methylene phosphonate, and wherein the activated set-delayed cement composition further comprises a polycarboxylated ether dispersant.

11. The composition of claim 1 wherein the activated set-delayed cement composition is free of Portland cement.

12. The composition of claim 1 wherein the hydrated lime is present from about 10% to about 50% by weight of the pumice.

13. An activated set-delayed cement composition comprising:

water;

pumice;

hydrated lime;

a phosphonic acid derivative set retarder;

a polycarboxylated ether dispersant; and

a cement set activator, wherein the cement set activator comprises at least one activator selected from the group consisting of nanosilica, a polyphosphate, and combinations thereof.

14. The composition of claim 13 wherein the cement set activator is present in the activated set-delayed cement composition in an amount of about 0.1% to about 20% by weight of the activated set-delayed cement composition.

15. The composition of claim 13 wherein the cement set activator comprises the combination of a monovalent salt and the polyphosphate.

16. The composition of claim 15 wherein the polyphosphate comprises sodium hexametaphosphate, and wherein the monovalent salt comprises sodium sulfate.

17. The composition of claim 15 wherein the ratio of the monovalent salt to the polyphosphate is from about 2:

1 to about 1;

25.

18. The composition of claim 13 wherein the cement set activator comprises nanosilica and wherein the nanosilica has been stabilized by at least one nanosilica stabilizer selected from the group consisting of:

sodium oxide, potassium oxide, lithium oxide, an amine, and any combination thereof.

19. The composition of claim 13 wherein the phosphonic acid derivative set retarder comprises at least one retarder selected from the group consisting of a methylene phosphonic acid derivative and a methylene phosphonate.

20. The composition of claim 13 wherein the activated set-delayed cement composition is free of Portland cement.