Carbon dioxide enhanced cement

Patent metadata

Field	Value
Publication number	US-11981859-B2
Application number	US-202318209916-A
Country	US
Kind code	B2
Filing date	Jun 14, 2023
Priority date	Oct 19, 2021
Publication date	May 14, 2024
Grant date	May 14, 2024

Abstract

A cement composition including a hydraulic cement material, a latent-hydraulic cement material, and a non-hydraulic cement material. Also provided is a method including combining, at a jobsite, the cement composition comprising the hydraulic cement material, the latent-hydraulic cement material, and the non-hydraulic cement material with water to provide a cement slurry, and allowing the cement slurry to harden in the presence of carbon dioxide (CO2) to provide a hardened cement.

First claim

What is claimed is:

1. A method of sequestering carbon dioxide (CO 2 ), the method comprising:
producing a gas comprising CO 2 ;
separating CO 2 gas from the gas comprising CO 2 ;
preparing a cement slurry comprising water, at least a portion of the CO 2 gas, and a cement composition comprising a hydraulic cement material, a latent-hydraulic cement material, and a non-hydraulic cement material, wherein the cement composition from about 20 to about 80 weight percent (wt %) of the hydraulic cement material, from about 10 to about 60 wt % of the latent-hydraulic cement material, and from about 10 to about 60 wt % of the non-hydraulic cement material, based on a total weight of the hydraulic cement material, the latent-hydraulic cement material, and the non-hydraulic cement material;
placing the cement slurry downhole via a wellbore; and
allowing the cement slurry to harden to provide a hardened cement.

2. The method of claim 1 , wherein preparing the cement slurry further comprises: combining the water and at least some of the at least the portion of the CO 2 gas to provide a carbonated water and combining the carbonated water with the cement composition to provide the cement slurry.

3. The method of claim 2 , wherein the gas comprising CO 2 comprises an exhaust gas produced at a wellsite.

4. The method of claim 3 , wherein the hydraulic cement material comprises Portland cement and the latent-hydraulic cement material comprises a pozzolanic material.

5. The method of claim 4 , wherein the pozzolanic material comprises a natural pozzolanic material chosen from volcanic materials, clays, zeolites, or diatomaceous earth, an artificial pozzolan produced by: calcining of natural clay, shale, and/or siliceous rocks, burning of coal, silicon metal production, or steel production, or a combination thereof.

6. The method of claim 5 , wherein the non-hydraulic cement material comprises a mineral carbonation cement material.

7. The method of claim 6 , wherein the mineral carbonation cement material comprises a calcium metasilicate.

8. The method of claim 7 , wherein the calcium metasilicate comprises wollastonite (CaSiO 3 ), parawollastonite (CaSiO 3 ), pseudowollastonite (Ca 3 Si 3 O 9 ), rankinite (Ca 3 Si 2 O 7 ), or a combination thereof.

9. The method of claim 1 , wherein the gas comprising CO 2 comprises an exhaust gas produced at a wellsite.

10. The method of claim 9 , wherein the hydraulic cement material comprises Portland cement and the latent-hydraulic cement material comprises a pozzolanic material.

11. The method of claim 10 , wherein the pozzolanic material comprises a natural pozzolanic material chosen from volcanic materials, clays, zeolites, or diatomaceous earth, an artificial pozzolan produced by: calcining of natural clay, shale, and/or siliceous rocks, burning of coal, silicon metal production, or steel production, or a combination thereof.

12. The method of claim 11 , wherein the non-hydraulic cement material comprises a mineral carbonation cement material.

13. The method of claim 12 , wherein the mineral carbonation cement material comprises a calcium metasilicate.

14. The method of claim 13 , wherein the calcium metasilicate comprises wollastonite (CaSiO 3 ), parawollastonite (CaSiO 3 ), pseudowollastonite (Ca 3 Si 3 O 9 ), rankinite (Ca 3 Si 2 O 7 ), or a combination thereof.

15. The method of claim 14 , wherein the cement slurry shrinks by less than or equal to about 5 volume percent (vol %) on hardening to provide the hardened cement.

16. The method of claim 1 , wherein the hydraulic cement material comprises Portland cement and the latent-hydraulic cement material comprises a pozzolanic material.

17. The method of claim 16 , wherein the pozzolanic material comprises a natural pozzolanic material chosen from volcanic materials, clays, zeolites, or diatomaceous earth, an artificial pozzolan produced by: calcining of natural clay, shale, and/or siliceous rocks, burning of coal, silicon metal production, or steel production, or a combination thereof.

18. The method of claim 17 , wherein the non-hydraulic cement material comprises a mineral carbonation cement material.

19. The method of claim 18 , wherein the mineral carbonation cement material comprises a calcium metasilicate.

20. The method of claim 19 , wherein the calcium metasilicate comprises wollastonite (CaSiO 3 ), parawollastonite (CaSiO 3 ), pseudowollastonite (Ca 3 Si 3 O 9 ), rankinite (Ca 3 Si 2 O 7 ), or a combination thereof.

Assignees

• Halliburton Energy Services Inc

Inventors

• Pisklak Thomas Jason

Classifications

• C04B40/0091

  Processes of mixing characterised by carbon dioxide treatment · CPC title

• C04B40/0231

  Carbon dioxide hardening · CPC title

• C04B2111/00019

  Carbon dioxide sequestration · CPC title

• C04B22/103

  Acids; Carbonic acids, e.g. from carbon dioxide · CPC title

• C09K8/467 Primary

  containing additives for specific purposes · CPC title