Hydration performance of microcellulose in cement

Patent metadata

Field	Value
Publication number	US-10781357-B2
Application number	US-201616070673-A
Country	US
Kind code	B2
Filing date	Mar 4, 2016
Priority date	Mar 4, 2016
Publication date	Sep 22, 2020
Grant date	Sep 22, 2020

Abstract

A variety of systems, methods and compositions are disclosed, including, in one method, a method of cementing may comprise providing a cement composition comprising a hydraulic cement, water, and a microcellulose additive, wherein the microcellose additive may comprise microcellulose with a metal deposited on a surface of the microcellose, wherein the metal may be selected from the group consisting of an alkali metal, an alkaline earth metal, and combinations thereof; placing the cement composition in a selected location; and allowing the cement composition to set.

First claim

What is claimed is:

1. A method of cementing comprising:
providing a cement composition comprising;
a hydraulic cement,
water, and
a microcellulose additive, wherein the microcellulose additive comprises microcellulose treated with a metal hydroxide to deposit a metal on a surface of the microcellulose, wherein a weight ratio of the microcellulose to the metal hydroxide is about 4:1 to about 1:4, and wherein the metal is selected from the group consisting of an alkali metal, an alkaline earth metal, and combinations thereof;

placing the cement composition in a selected location; and
allowing the cement composition to set.

2. The method of claim 1 , wherein the cement composition has a density in a range of from about 4 pounds per gallon to about 20 pounds per gallon, and wherein the water is present in an amount sufficient to form a pumpable slurry.

3. The method of claim 1 , wherein the hydraulic cement comprises at least one hydraulic cement selected from the group consisting of Portland cement, pozzolan cement, gypsum cement, high-alumina-content cement, slag cement, silica cement, and any combination thereof.

4. The method of claim 1 , wherein the microcellulose comprises at least one microcellulose fiber derived from at least one cellulosic source selected from the group consisting of bacteria, wood, bleached kraft pulp, bleached sulfite pulp, sugar beet pulp, wheat straw, soy hulls, sisal, bagasse, palm trees, ramie, carrots, luffa cylindrica and any combination thereof.

5. The method of claim 1 , wherein the microcellulose additive is present in the cement composition in an amount of about 0.1% to about 10% by weight of the cement composition.

6. The method of claim 1 , wherein the microcellulose has a diameter ranging from about 0.15 microns to about 10.0 microns.

7. The method of claim 1 , wherein the microcellulose has a length from about 10 microns to about 200 microns.

8. The method of claim 1 , wherein the metal hydroxide is selected from the group consisting of alkali metal hydroxides, alkaline earth metal hydroxides, and combinations thereof.

9. The method of claim 1 , further comprising contacting the microcellulose with a water solution of the metal hydroxide to deposit the metal on the surface of the microcellulose.

10. The method of claim 1 , wherein the selected location is a wellbore annulus in a primary cementing operation.

11. The method of claim 1 , wherein the selected location is in a well bore in a subterranean formation.

12. A cement composition comprising:
a hydraulic cement,
water, and
a microcellulose additive, wherein the microcellulose additive comprises microcellulose treated with a metal hydroxide to deposit a metal on a surface of the microcellulose, wherein a weight ratio of the microcellulose to the metal hydroxide is about 4:1 to about 1:4, wherein the metal is selected from the group consisting of an alkali metal, an alkaline earth metal, and combinations thereof.

13. The cement composition of claim 12 , wherein the cement composition has a density in a range of from about 4 pounds per gallon to about 20 pounds per gallon, and wherein the water is present in an amount sufficient to form a pumpable slurry, wherein the hydraulic cement comprises at least one hydraulic cement selected from the group consisting of Portland cement, pozzolan cement, gypsum cement, high-alumina-content cement, slag cement, silica cement, and any combination thereof.

14. The cement composition of claim 12 , wherein the microcellulose comprises at least one microcellulose fiber derived from at least one cellulosic source selected from the group consisting of bacteria, wood, bleached kraft pulp, bleached sulfite pulp, sugar beet pulp, wheat straw, soy hulls, sisal, bagasse, palm trees, ramie, carrots, luffa cylindrica and any combination thereof.

15. The cement composition of claim 12 , wherein the microcellulose is present in the cement composition in an amount of about 0.1% to about 10% by weight of the cement composition.

16. The cement composition of claim 12 , wherein the microcellulose has a length from about 10 microns to about 200 microns.

17. The cement composition of claim 12 , wherein the metal hydroxide is selected from the group consisting of alkali metal hydroxides, alkaline earth metal hydroxides, and combinations thereof.

18. A cementing system comprising:
a cement composition comprising;
a hydraulic cement,
water, and
a microcellulose additive, wherein the microcellulose additive comprises microcellulose treated with a metal hydroxide to deposit a metal on a surface of the microcellulose, wherein a weight ratio of the microcellulose to the metal hydroxide is about 4:1 to about 1:4, wherein the metal is selected from the group consisting of an alkali metal, an alkaline earth metal, and combinations thereof;
mixing equipment capable of mixing the cement composition; and
pumping equipment capable of delivering the cement composition into a wellbore.

19. The cementing system of claim 18 , wherein the microcellulose comprises at least one microcellulose fiber derived from at least one cellulosic source selected from the group consisting of bacteria, wood, bleached kraft pulp, bleached sulfite pulp, sugar beet pulp, wheat straw, soy hulls, sisal, bagasse, palm trees, ramie, carrots, luffa cylindrica and any combination thereof.

Assignees

• Halliburton Energy Services Inc

Inventors

• Pearl Jr William Cecil
• Ravi Krishna M
• Filho Romildo Dias Toledo
• Ferreira Saulo Rocha
• Scheibe De Siqueira Iolanda

Classifications

• C04B28/02 Primary

  containing hydraulic cements other than calcium sulfates · CPC title

• C04B20/1066

  Oxides, Hydroxides · CPC title

• C09K8/467 Primary

  containing additives for specific purposes · CPC title

• C04B20/008

  Micro- or nanosized fillers, e.g. micronised fillers with particle size smaller than that of the hydraulic binder (colloidal silica C04B14/062 ; silica fume C04B18/146) · CPC title

• C04B28/08

  Slag cements · CPC title