Cement slurries, cured cement and methods of making and use thereof

Patent metadata

Field	Value
Publication number	US-11370706-B2
Application number	US-202016934637-A
Country	US
Kind code	B2
Filing date	Jul 21, 2020
Priority date	Jul 26, 2019
Publication date	Jun 28, 2022
Grant date	Jun 28, 2022

Abstract

Cured cements, cement slurries, and methods of making cured cement and methods of using cement slurries are provided. The method of making a cured cement comprising: synthesizing nanomaterials via chemical vapor deposition on at least one of cement particles or cement additive particles to form nanomaterial particles, adding the nanomaterial particles to a cement slurry to form a modified cement slurry, and curing the modified cement slurry to form a cured cement, in which the nanomaterials are interconnected and form a conductive web within the cured cement.

First claim

What is claimed is:

1. A method of making a cured cement comprising:
synthesizing nanomaterials via chemical vapor deposition on at least one of cement particles or cement additive particles to form nanomaterial particles,
functionalizing the nanomaterials with at least one of magnetic or electric properties prior to adding the nanomaterial particles to a cement slurry,
adding the nanomaterial particles to the cement slurry to form a modified cement slurry, and
curing the modified cement slurry to form a cured cement, in which the nanomaterials are interconnected and form a conductive web within the cured cement.

2. The method of claim 1 , further comprising adding at least one of a dispersing agent or a surfactant to the cement slurry prior to adding the nanomaterial particles to the cement slurry.

3. The method of claim 2 , in which the dispersing agent comprises polycarboxylate ether.

4. The method of claim 2 , in which the surfactant comprises at least one of anionic surfactants, cationic surfactants, amphoteric surfactants, zwitterionic surfactants, nonionic surfactants, or combinations thereof.

5. The method of claim 1 , in which the nanomaterials comprise at least one of nanotubes, nanofibers, or nanosheets.

6. The method of claim 1 , in which the nanomaterials comprise at least one of nanosilica, nanoalumina, nanozinc oxide, nanocarbon, carbon nanotubes, nanocalcium carbonate, boron nitride nanotubes, or nanozirconium oxide.

7. The method of claim 6 , in which the carbon nanotubes comprise at least one of single-walled nanotubes, double-walled nanotubes, multi-walled carbon nanotubes, or narrow-walled nanotubes.

8. The method of claim 1 , in which the nanomaterials conduct electric energy.

9. The method of claim 1 , in which the cement additive particles comprise at least one of barite particles, hematite particles, hausmannite particles, bentonite particles, forsterite particles, diopside particles, montmorillonite particles, vermiculite particles, sand particles, or pumice particles.

10. The method of claim 1 , in which the cement slurry is hydraulic.

11. The method of claim 1 , in which the cement slurry is non-hydraulic.

12. The method of claim 1 , in which the cement particles comprise at least one of Portland cement particles, siliceous fly ash particles, calcareous fly ash particles, slag cement particles, silica fume particles, calcium hydroxide particles, silicates particles, belite (Ca 2 SiO 5 ) particles, alite (Ca 3 SiO 4 ) particles, tricalcium aluminate (Ca 3 Al 2 O 6 ) particles, tetracalcium aluminoferrite (Ca 4 Al 2 Fe 2 O 10 ) particles, brownmilleriate (4CaO.Al 2 O 3 .Fe 2 O 3 ) particles, gypsum (CaSO 4 .2H 2 O) particles, sodium oxide particles, potassium oxide particles, limestone particles, lime (calcium oxide) particles, hexavalent chromium particles, calcium aluminate particles, and combinations thereof.

13. The method of claim 1 , in which the cured cement conducts electric current.

14. The method of claim 1 , in which the cured cement is magnetic.

15. The method of claim 1 , in which the cured cement has an elastic modulus of from 0.1 to 10 Mpsi.

16. The method of claim 1 , wherein functionalizing the nanomaterials comprises functionalizing the nanomaterials with electrically conductive elements.

17. The method of claim 16 , wherein the electrically conductive elements comprises carbon, nickel, copper, gold, silver, titanium, or combinations thereof.

Assignees

• Saudi Arabian Oil Co

Inventors

• Boul Peter J
• Santra Ashok

Classifications

• C09K8/467

  containing additives for specific purposes · CPC title

• C04B2111/94

  Electrically conducting materials · CPC title

• C04B2111/00422

  Magnetic properties · CPC title

• C04B20/1066

  Oxides, Hydroxides · CPC title

• C04B24/2664

  of ethylenically unsaturated dicarboxylic acid polymers, e.g. maleic anhydride copolymers · CPC title