Crack-resistant cement composition

Patent metadata

Field	Value
Publication number	US-10494897-B2
Application number	US-201816042762-A
Country	US
Kind code	B2
Filing date	Jul 23, 2018
Priority date	Sep 9, 2014
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

A cement composition for use in a well that penetrates a subterranean formation comprising: cement; water; and an additive comprising zirconium dioxide, wherein at least a portion of the zirconium dioxide is in a metastable tetragonal phase, and wherein some or all of the zirconium dioxide that is in the metastable tetragonal phase transforms to a stable monoclinic phase after a stress is applied to the cement composition. The additive also reduces the dimensions of a crack located within the set cement composition. A method of cementing in a subterranean formation comprising: introducing a cement composition into the subterranean formation.

First claim

What is claimed is:

1. A cement composition comprising:
cement;
water; and
an additive comprising zirconium dioxide, wherein at least a portion of the zirconium dioxide is in a metastable tetragonal phase, and wherein some or all of the zirconium dioxide that is in the metastable tetragonal phase transforms to a stable monoclinic phase after a stress is applied to the cement composition.

2. The cement composition according to claim 1 , wherein the cement is selected from the group consisting of Portland cements, gypsum cements, high alumina content cements, slag cements, high magnesia content cements, and any combination thereof.

3. The cement composition according to claim 1 , wherein the water is selected from the group consisting of freshwater, brackish water, saltwater, and any combination thereof in any proportion.

4. The cement composition according to claim 1 , wherein the cement composition further comprises a water-soluble salt.

5. The cement composition according to claim 4 , wherein the salt is selected from sodium chloride, calcium chloride, calcium bromide, potassium chloride, potassium bromide, magnesium chloride, and any combination thereof in any proportion.

6. The cement composition according to claim 1 , wherein all of the zirconium dioxide is in the metastable tetragonal phase.

7. The cement composition according to claim 1 , wherein the additive further comprises an additional metal oxide.

8. The cement composition according to claim 7 , wherein the additional metal oxide is selected from the group consisting of aluminum oxide and transition metal oxides.

9. The cement composition according to claim 7 , wherein the ratio of zirconium dioxide to additional metal oxide is in the range of about 9:1 to about 1:1.

10. The cement composition according to claim 1 , wherein the additive is in a concentration in the range of about 1% to about 10% by weight of the cement.

11. The cement composition according to claim 1 , wherein the zirconium dioxide is in a concentration in the range of about 10% to about 50% by weight of the additive.

12. The cement composition according to claim 1 , wherein the zirconium dioxide is in a concentration in the range of about 0.1% to about 25% by weight of the cement.

13. The cement composition according to claim 1 , wherein the cement composition is a set cement composition.

14. The cement composition according to claim 13 , wherein the set cement composition comprises one crack formed within the set cement composition during or after the application of the stress to the cement composition.

15. The cement composition according to claim 13 , wherein the transformation of the zirconium dioxide from the metastable tetragonal phase to the stable monoclinic phase occurs after the cement composition has set.

16. The cement composition according to claim 14 , wherein the transformation of the zirconium dioxide from the metastable tetragonal phase to the stable monoclinic phase occurs after the crack has formed within the set cement composition.

17. The cement composition according to claim 16 , wherein the additive has reduced the size of at least one dimension of the crack within the set cement composition.

18. The cement composition according to claim 16 , wherein the additive has completely filled the crack within the set cement composition.

19. The cement composition according to claim 1 , wherein the cement composition is placed in a subterranean formation penetrated by a well.

20. The cement composition according to claim 19 , wherein the well is an oil well, a gas well, a water production well, an injection well, a geothermal well, or a high-temperature and high-pressure well.

Assignees

• Halliburton Energy Services Inc

Inventors

• Pandey Vandana Neeraj
• Senapati Dibyadarshani
• Deshpande Abhimanyu P
• Patil Rahul Chandrakant

Classifications

• C04B14/306

  Zirconium oxide (zircon C04B14/046) · CPC title

• C09K8/493

  Additives for reducing or preventing gas migration · CPC title

• E21B33/14 Primary

  for cementing casings into boreholes · CPC title

• C09K8/46

  containing inorganic binders, e.g. Portland cement · CPC title

• E21B33/13 Primary

  Methods or devices for cementing, for plugging holes, crevices or the like · CPC title