High-alumina refractory aluminosilicate pozzolan in well cementing

Patent metadata

Field	Value
Publication number	US-10112869-B2
Application number	US-201415113182-A
Country	US
Kind code	B2
Filing date	Feb 26, 2014
Priority date	Feb 26, 2014
Publication date	Oct 30, 2018
Grant date	Oct 30, 2018

Abstract

Methods and compositions are provided that utilize high-alumina refractory aluminosilicate pozzolans in well cementing. An embodiment discloses a method of cementing comprising: introducing a cement composition into a subterranean formation, wherein the cement composition comprises: a component selected from the group consisting of cement kiln dust, Portland cement, and any combination thereof; a high-alumina refractory aluminosilicate pozzolan; and water; and allowing the cement composition to set.

First claim

What is claimed is:

1. A method of cementing comprising:
introducing a cement composition into a subterranean formation, wherein the cement composition comprises: a component selected from the group consisting of cement kiln dust, and any combination thereof; a high-alumina refractory aluminosilicate pozzolan; and water, wherein the high-alumina refractory aluminosilicate pozzolan comprises Mullite in an amount of about 30 weight % or greater, wherein the high-alumina refractory aluminosilicate pozzolan comprises Corundum in an amount of about 10 weight % or greater, and wherein high-alumina refractory aluminosilicate pozzolan is substantially devoid of amorphous material; and allowing the cement composition to set.

2. The method according to claim 1 , wherein the component comprises the cement kiln dust.

3. The method according to claim 1 , wherein the high-alumina refractory aluminosilicate pozzolan comprises a compound selected from firebrick, firebrick grog, refractory mortar, fire clay, Mullite, fused Mullite, and any combination thereof.

4. The method according to claim 1 , wherein the high-alumina refractory aluminosilicate pozzolan is present in an amount of about 50% to about 150% by weight of the component.

5. The method according to claim 1 , wherein the cement composition further comprises at least one additive selected from the group consisting of a foaming additive, a strength-retrogression additive, a set accelerator, a set retarder, a lightweight additive, a gas-generating additive, a mechanical-property-enhancing additives, a lost-circulation material, a fluid loss control additive, a foaming additive, a defoaming additive, a thixotropic additive, and any combination thereof.

6. The method according to claim 1 , wherein the cement composition is introduced into a well bore annulus between a pipe string disposed in the subterranean formation and a wellbore wall or between the pipe string and a larger conduit disposed in the subterranean formation.

7. The method according to claim 1 , wherein the cement composition is used in a primary cementing operation.

8. The method according to claim 1 , wherein the cement composition is used in a remedial cementing operation.

9. The method according to claim 1 , wherein the cement composition is introduced through a casing and into a wellbore annulus using one or more pumps.

10. The method according claim 1 , wherein the cement composition is allowed to set at a temperature of about 250° F. or greater.

11. A system for well cementing in high temperature wells comprising:
a cement composition comprising: a component selected from the group consisting of cement kiln dust, and any combination thereof; a high-alumina refractory aluminosilicate pozzolan; and water, wherein the high-alumina refractory aluminosilicate pozzolan comprises Mullite in an amount of about 30 weight % or greater, wherein the high-alumina refractory aluminosilicate pozzolan comprises Corundum in an amount of about 10 weight % or greater, and
wherein high-alumina refractory aluminosilicate pozzolan is substantially devoid of amorphous material;
mixing equipment for mixing the cement composition; and
pumping equipment for delivering the cement composition to a wellbore, wherein the wellbore has a temperature of about 250° F. or greater.

12. The system according to claim 11 , wherein the component comprises the cement kiln dust.

13. The system according to claim 11 , wherein the high-alumina refractory aluminosilicate pozzolan comprises a compound selected from firebrick, firebrick grog, refractory mortar, fire clay, Mullite, fused Mullite, and any combination thereof, and wherein the high-alumina refractory aluminosilicate pozzolan is present in an amount of about 50% to about 150% by weight of the component.

14. A method of cementing comprising:
pumping a cement composition into a wellbore annulus formation, wherein the cement composition comprises cement kiln dust, a high-alumina refractory aluminosilicate pozzolan; and water, wherein the high-alumina refractory aluminosilicate pozzolan comprises a Mullite and is present in an amount of about 50% to about 150% by weight of the component, wherein the high-alumina refractory aluminosilicate pozzolan comprises the Mullite in an amount of about 30 weight or greater, wherein the high-alumina refractory aluminosilicate pozzolan comprises Corundum in an amount of about 10 weight % or greater, and wherein high-alumina refractory aluminosilicate pozzolan is substantially devoid of amorphous material; and
allowing the cement composition to set in the wellbore annulus, wherein the cement composition has a compressive strength ranging from about 500 psi to about 4,000 psi.

15. The method according to claim 14 , wherein the wellbore annulus is between a pipe string disposed in the subterranean formation and a wellbore wall and/or between the pipe string and a larger conduit disposed in the subterranean formation.

16. The method according claim 1 , wherein the wellbore annulus has a temperature of about 250° F. or greater.

Assignees

• Halliburton Energy Services Inc
• Halliburton Enegry Services Inc

Inventors

• Agapiou Kyriacos

Classifications

• C04B2103/50

  Defoamers, air detrainers · CPC title

• C04B14/041

  Aluminium silicates other than clay · CPC title

• C09K8/467 Primary

  containing additives for specific purposes · CPC title

• C04B18/162

  Cement kiln dust; Lime kiln dust · CPC title

• C09K8/487

  Fluid loss control additives; Additives for reducing or preventing circulation loss · CPC title