Cement set activators for cement compositions and associated methods

Patent metadata

Field	Value
Publication number	US-10544649-B2
Application number	US-201816058369-A
Country	US
Kind code	B2
Filing date	Aug 8, 2018
Priority date	Mar 9, 2012
Publication date	Jan 28, 2020
Grant date	Jan 28, 2020

Abstract

Disclosed herein are cement compositions and methods of using cement compositions in subterranean formations. An embodiment comprises a method of cementing in a subterranean formation comprising: providing a cement composition comprising water, a pozzolan, hydrated lime, and a zeolite activator; introducing the cement composition into a subterranean formation; and allowing the cement composition to set in the subterranean formation, wherein the zeolite activator accelerates compressive strength development of the cement composition.

First claim

What is claimed is:

1. An activated set-delayed cement composition comprising:
water,
a pozzolan, wherein the pozzolan is selected from the group consisting of: fly ash, silica fume, metakaolin, pumice, and any combination thereof;
hydrated lime,
a set retarder, and
a zeolite activator comprising zeolitized pumice.

2. The composition of claim 1 wherein the zeolite activator is present in an amount in the range of about 0.1% to about 20% by weight of the pozzolan.

3. The composition of claim 1 wherein the set retarder comprises a phosphonic acid derivative, and wherein the activated set-delayed cement composition further comprises a polycarboxylated ether dispersant.

4. The composition of claim 1 , wherein the zeolitized pumice is present in an amount that is 5 times an amount of the hydrated lime.

5. A method of making a cement comprising:
storing a set-delayed cement composition comprising water, a pozzolan, hydrated lime, and a set retarder for at least about one day; and
adding a zeolite activator to the set-delayed cement composition after the step of storing to activate the set-delayed cement composition, the zeolite activator comprising zeolitized pumice;
wherein the pozzolan is selected from the group consisting of: fly ash, silica fume, metakaolin, pumice, and any combination thereof.

6. The method of claim 5 further comprising storing the set-delayed cement composition for at least about 7 days prior to adding the zeolite activator.

7. The method of claim 5 wherein the zeolite activator comprises a zeolite in combination with a cation.

8. The method of claim 5 wherein the zeolite activator comprises a zeolite present on a surface of the pozzolan.

9. The method of claim 5 wherein the zeolite activator is present in an amount in the range of about 0.1% to about 20% by weight of the pozzolan.

10. The method of claim 5 wherein the set retarder comprises at least one retarder selected from the group consisting of a phosphonic acid, a phosphonic acid derivative, a lignosulfonate, a salt, an organic acid, a cellulose derivate, a synthetic co- or ter-polymer comprising sulfonate and carboxylic acid groups, a borate compound, and any combination thereof.

11. The method of claim 5 wherein the set-delayed cement composition further comprises a dispersant.

12. The method of claim 11 wherein the dispersant comprises at least one dispersant selected from the group consisting of a sulfonated-formaldehyde-based dispersant, a polycarboxylated ether dispersant, and a combination thereof.

13. The method of claim 5 wherein the set-delayed cement composition further comprises a phosphonic acid derivative cement set retarder and a polycarboxylated ether dispersant.

14. The method of claim 5 , wherein the zeolitized pumice is present in an amount that is 5 times an amount of the hydrated lime.

15. The method of claim 5 , wherein the set-delayed cement composition is introduced into a subterranean formation by a process comprising pumping the set-delayed cement composition through a conduit, through a casing shoe, and into a wellbore annulus.

Assignees

• Halliburton Energy Services Inc

Inventors

• Pisklak Thomas Jason
• Brothers Lance Everett

Classifications

• C04B28/18 Primary

  containing mixtures of the silica-lime type · CPC title

• C04B7/34

  Hydraulic lime cements; Roman cements {; natural cements} · CPC title

• C09K8/467

  containing additives for specific purposes · CPC title

• C04B40/0658

  Retarder inhibited mortars activated by the addition of accelerators or retarder-neutralising agents · CPC title

• E21B33/138 Primary

  Plastering the borehole wall; Injecting into the formation · CPC title