Pozzolanic By-Product For Slurry Yield Enhancement

Patent metadata

Field	Value
Publication number	US-2021198551-A1
Application number	US-202117198472-A
Country	US
Kind code	A1
Filing date	Mar 11, 2021
Priority date	Aug 26, 2019
Publication date	Jul 1, 2021
Grant date	—

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.

2 . The cement composition of claim 1 wherein the ground vitrified clay is a product of vitrification of clay, slate, and shale.

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

4 . 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.

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

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

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

8 . The composition of claim 6 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.

9 . The composition of claim 6 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.

10 . The composition of claim 6 wherein the composition does not contain additional cementitious components that hydraulically set in the presence of water.

11 . The composition of claim 6 wherein the composition further comprises a hydraulic cement.

12 . The composition of claim 6 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.

13 . The composition of claim 6 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 ).

14 . 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.

15 . The composition of claim 14 , 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.

16 . The composition of claim 14 , 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.

17 . The composition of claim 14 , wherein the cement composition does not contain additional cementitious components that hydraulically set in the presence of water.

18 . The composition of claim 14 , 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.

19 . The composition of claim 14 , wherein the cement composition further comprises Portland cement in an amount of less than 50% by weight of dry components of the cement composition.

20 . The composition of claim 14 , 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

• Y02W30/91

  Use of waste materials as fillers for mortars or concrete · CPC title

• C09K8/473

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

• C04B41/009

  characterised by the material treated · CPC title

• C09K8/145 Primary

  characterised by the composition of the clay · CPC title

• C04B28/04

  Portland cements · CPC title