Pozzolanic by-product for slurry yield enhancement

Patent metadata

Field	Value
Publication number	US-11680197-B2
Application number	US-202117198472-A
Country	US
Kind code	B2
Filing date	Mar 11, 2021
Priority date	Aug 26, 2019
Publication date	Jun 20, 2023
Grant date	Jun 20, 2023

Abstract

A method may include providing a cement composition comprising ground vitrified clay, hydrated lime, and water; and introducing the cement composition into a subterranean formation.

First claim

What is claimed is:

1. A cement composition comprising:
ground vitrified clay;
hydrated lime; and
water; wherein the ground vitrified clay is ground vitrified pipe.

2. The cement composition of claim 1 wherein the ground vitrified clay is ground vitrified pipe.

3. The cement composition of claim 1 wherein the ground vitrified clay and the hydrated lime are present in a weight ratio of ground vitrified clay to hydrated lime of about 10:1 to about 1:1.

4. The cement composition of claim 1 wherein the cement composition further comprises a hydraulic cement.

5. A composition comprising:
ground vitrified clay;
hydrated lime; and
water;
wherein the ground vitrified clay comprises ground vitrified pipe.

6. The composition of claim 5 wherein the ground vitrified pipe is a product of vitrification of clay and minerals.

7. The composition of claim 5 wherein ground vitrified pipe is a product of heating a mixture of the clay, slate, and shale, above a glass transition temperature of the mixture and cooling the mixture to below the glass transition temperature, thereby producing a solid ceramic structure characterized by a glassy phase comprised of vitrification products of the clay, the slate, and the shale.

8. The composition of claim 5 wherein the ground vitrified clay and the hydrated lime are present in a weight ratio of ground vitrified clay to hydrated lime of about 10:1 to about 1:1.

9. The composition of claim 5 wherein the composition does not contain additional cementitious components that hydraulically set in the presence of water.

10. The composition of claim 5 wherein the composition further comprises a hydraulic cement.

11. The composition of claim 5 wherein the cement composition further comprises at least one additional component selected form the group consisting of fly ash, cement kiln dust, slag, perlite, natural glass, and combinations thereof.

12. The composition of claim 5 wherein the cement composition has a density of about 11 lb/gal (1318 kg/m 3 ) to about 16 lb/gal (1917 kg/m 3 ).

13. A composition comprising:
ground vitrified clay, wherein the ground vitrified clay is a product of vitrification of clay, slate, and shale;
Portland cement in an amount of less than 50% by weight of dry components of the cement composition;
hydrated lime; and
water.

14. The composition of claim 13 , wherein the ground vitrified clay and the hydrated lime are present in a weight ratio of ground vitrified clay to hydrated lime of about 10:1 to about 1:1.

15. The composition of claim 13 , wherein the cement composition further comprises at least one additional component selected form the group consisting of fly ash, cement kiln dust, slag, perlite, natural glass, and combinations thereof.

16. The composition of claim 13 , wherein the cement composition does not contain additional cementitious components that hydraulically set in the presence of water.

17. The composition of claim 13 , wherein the vitrification comprises heating a mixture of the clay, slate, and shale, above a glass transition temperature of the mixture and cooling the mixture to below the glass transition temperature, thereby producing a solid ceramic structure characterized by a glassy phase comprised of vitrification products of the clay, the slate, and the shale.

18. The composition of claim 13 , wherein the cement composition further comprises Portland cement in an amount of less than 50% by weight of dry components of the cement composition.

19. The composition of claim 13 , further comprising a foaming agent and a gas, wherein the composition has a density in the range of from about 4 lb/gal (479 kg/m 3 ) to about 13 lb/gal (1558 kg/m 3 ).

Assignees

• Halliburton Energy Services Inc

Inventors

• Pisklak Thomas Jason
• Pineda Claudia Carmen

Classifications

• C09K8/5045

  containing inorganic compounds · CPC title

• C04B41/009

  characterised by the material treated · CPC title

• C04B18/067

  Slags · CPC title

• C09K8/145 Primary

  characterised by the composition of the clay · CPC title

• C04B28/04

  Portland cements · CPC title