Expansive cement

Patent metadata

Field	Value
Publication number	US-10208562-B2
Application number	US-201815872641-A
Country	US
Kind code	B2
Filing date	Jan 16, 2018
Priority date	Sep 30, 2014
Publication date	Feb 19, 2019
Grant date	Feb 19, 2019

Abstract

An expansive additive composition for use in Portland cements and a method of using such an additive composition is provided. The additive composition can include a calcium aluminate cement additive and a lithium compound. The additive composition is capable of producing expansion in set cements when the temperature is at or below room temperature and minimizes the amount of calcium aluminate cement additive needed.

First claim

What is claimed is:

1. A method of using an expansion additive composition, the method comprising:
mixing the expansion additive composition, a Portland cement and water so as to form a slurry, wherein the expansion additive composition comprises:
a calcium aluminate cement in an amount from about 0.5% to about 8.0% by weight of said Portland cement;
a lithium compound in an amount from about 0.001% to about 0.50% by weight of said Portland cement;
calcium sulfate present in an amount from about 1% to about 15% by weight of said Portland cement;
calcium hydroxide present in an amount from about 0.1% to about 3.0% by weight of said Portland cement; and
sodium bicarbonate present in an amount from about 0.01% to about 1.00% by weight of said Portland cement; and

introducing the slurry into a subterranean formation.

2. The method of claim 1 , wherein said subterranean formation is at a temperature below about 100° F.

3. The method of claim 2 , wherein said composition results in a 10% increase in volume of the slurry when setting occurs at a temperature of below 100° F.

4. The method of claim 3 , wherein said subterranean formation is at a temperature below about 73° F.

5. The method of claim 1 , wherein a bore of a well extends through said subterranean formation and the method further comprises allowing the slurry to form a plug in the bore.

6. The composition of claim 1 , wherein the lithium compound is a lithium salt selected from the group consisting of lithium carbonate, lithium halides, lithium sulfate, hydrates of lithium sulfate, lithium nitrate, lithium hydroxide, and mixtures thereof.

7. The method of claim 6 , wherein said calcium aluminate cement is in an amount from about 1.0% to about 5.0% by weight of said Portland Cement, and wherein said lithium compound is in an amount from about 0.005% to about 0.150% by weight of said Portland cement.

8. The method of claim 7 , wherein said calcium aluminate cement is in an amount from 1.5% to 3.5% by weight of said Portland cement and said lithium compound is in an amount from 0.010% to 0.100% by weight of said Portland cement.

9. The method of claim 8 , wherein said expansion additive composition results in at least a 17% increase in volume of the slurry when setting occurs at a temperature of below 60° F.

10. The method of claim 9 , wherein a bore of a well extends through said subterranean formation with said bore defined by a borehole wall, wherein a casing is in said bore, and wherein the method further comprises:
placing the slurry between the casing and the borehole wall.

11. The method of claim 10 , further comprising allowing the slurry to form a plug in the bore.

12. The method of claim 1 , wherein said expansion additive composition, said Portland cement and water are mixed using mixing equipment.

13. The method of claim 1 , wherein the slurry is introduced into the subterranean formation using one or more pumps.

14. A method of using an expansion additive composition, the method comprising:
mixing the expansion additive composition, a Portland cement and water so as to form a slurry, wherein the expansion additive composition comprises:
a calcium aluminate cement in an amount from about 1.0% to about 5.0% by weight of said Portland cement;
a lithium salt in an amount from about 0.005% to about 0.150% by weight of said Portland cement, wherein the lithium salt is selected from the group consisting of lithium carbonate, lithium halides, lithium sulfate, hydrates of lithium sulfate, lithium nitrate, lithium hydroxide, and mixtures thereof;
calcium sulfate present in an amount from about 1% to about 15% by weight of said Portland cement;
calcium hydroxide present in an amount from about 0.1% to about 3.0% by weight of said Portland cement; and
sodium bicarbonate present in an amount from about 0.01% to about 1.00% by weight of said Portland cement; and

introducing the slurry into an annulus between a casing and a borehole wall, wherein said borehole wall and said casing are at a temperature below about 100° F., and wherein said expansion additive composition results in a 10% increase in volume of the slurry when setting occurs at a temperature of below 100° F.

Assignees

• Halliburton Energy Services Inc

Inventors

• Agapiou Kyriacos
• Harris Cody Glenn
• Karcher Jeffery Dwane

Classifications

• E21B33/14 Primary

  for cementing casings into boreholes · CPC title

• C09K8/493

  Additives for reducing or preventing gas migration · CPC title

• C09K8/467

  containing additives for specific purposes · CPC title

• C09K8/42

  Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells (compositions for plastering C09K8/50) · CPC title

• C04B40/0042

  Powdery mixtures · CPC title