High-Alumina Refractory Aluminosilicate Pozzolan in Well Cementing

Patent metadata

Field	Value
Publication number	US-2017001908-A1
Application number	US-201415113182-A
Country	US
Kind code	A1
Filing date	Feb 26, 2014
Priority date	Feb 26, 2014
Publication date	Jan 5, 2017
Grant date	—

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, Portland cement, and any combination thereof; a high-alumina refractory aluminosilicate pozzolan; and water; and allowing the cement composition to set.

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

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

4 . 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.

5 . 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.

6 . The method according to claim 1 , 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 Corrundum in an amount of about 10 weight % or greater, and wherein high-alumina refractory aluminosilicate pozzolan is substantially devoid of amorphous material.

7 . 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.

8 . 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 a larger conduit disposed in the subterranean formation.

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

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

11 . 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.

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

13 . A cement composition comprising:
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.

14 . The composition according to claim 13 , wherein the component comprises the Portland cement.

15 . The composition according to claim 13 , wherein the component comprises the cement kiln dust.

16 . The composition according to claim 13 , 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.

17 . The composition according to claim 13 , wherein the high-alumina refractory aluminosilicate pozzolan is present in an amount of about 50% to about 150% by weight of the component.

18 . The composition according to claim 13 , 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 Corrundum in an amount of about 10 weight % or greater, and wherein high-alumina refractory aluminosilicate pozzolan is substantially devoid of amorphous material.

19 . The composition according to claim 13 , 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.

20 . A system for well cementing comprising:
a cement composition comprising: 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; mixing equipment for mixing the cement composition; and pumping equipment for delivering the cement composition to a wellbore.

21 . (canceled)

Assignees

• Halliburton Energy Services Inc

Inventors

• Agapiou Kyriacos

Classifications

• C09K8/46 Primary

  containing inorganic binders, e.g. Portland cement · CPC title

• E21B33/14

  for cementing casings into boreholes · CPC title

• C09K8/487

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

• C09K8/473

  Density reducing additives, e.g. for obtaining foamed cement compositions · CPC title

• C04B28/06 Primary

  Aluminous cements (monolithic refractories or refractory mortars C04B35/66) · CPC title