Expansive cement

• US 9,902,892 B2
• Filed: 09/30/2014
• Issued: 02/27/2018
• Est. Priority Date: 09/30/2014
• Status: Active Grant

• Current Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Original Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Inventors: Agapiou, Kyriacos, Harris, Cody Glenn, Karcher, Jeffery Dwane
• Primary Examiner(s): Green, Anthony J
• Application Number:
  US15/319,309
• Publication Number:
  US 20170145288A1
• Time in Patent Office: 1,246 Days
• CPC Class Codes: C04B 2103/0008 Li
• CPC Class Codes: C04B 2103/008 Flocking or deflocking agents
• CPC Class Codes: C04B 2103/10 Accelerators; Activators
• CPC Class Codes: C04B 22/008 Cement and like inorganic materials added as expanding or shrinkage compensating ingredients in mortar or concrete compositions, the expansion being the result of a recrystallisation mixtures of cements C04B7/00, C04B28/00
• CPC Class Codes: C04B 22/0093 Aluminates
• CPC Class Codes: C04B 22/062 of the alkali or alkaline-earth metals
• CPC Class Codes: C04B 22/064 of the alkaline-earth metals
• CPC Class Codes: C04B 22/085 containing nitrogen in the anion, e.g. nitrites
• CPC Class Codes: C04B 22/10 containing carbon in the anion
• CPC Class Codes: C04B 22/106 Bicarbonates
• CPC Class Codes: C04B 22/12 containing halogen in the anion
• CPC Class Codes: C04B 22/124 Chlorides of ammonium or of the alkali or alkaline earth metals, e.g. calcium chloride
• CPC Class Codes: C04B 22/142 Sulfates
• CPC Class Codes: C04B 28/04 Portland cements
• CPC Class Codes: C04B 28/14 containing calcium sulfate cements gypsum-paper plates E04C
• CPC Class Codes: C04B 40/0039 Premixtures of ingredients
• CPC Class Codes: C04B 40/0042 Powdery mixtures
• CPC Class Codes: C04B 7/02 Portland cement
• CPC Class Codes: C04B 7/32 Aluminous cements
• CPC Class Codes: C09K 8/467 containing additives for specific purposes
• CPC Class Codes: C09K 8/493 : Additives for reducing or preventing gas migration
• CPC Class Codes: E21B 33/14 : for cementing casings into boreholes

Abstract

An expansive cement composition including a Portland cement having a calcium aluminate cement additive and a lithium compound additive is provided. The lithium compound additive 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.

Claims

1. An expansive cement composition comprising:

a Portland cement,

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.

2. The composition of claim 1, wherein said composition, during and after setting, results in at least a 10% increase in volume when setting occurs at a temperature of below 100°

F.

3. The composition of claim 2, 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.

4. The composition of claim 3, wherein said calcium aluminate cement is in an amount from about 1.0% to about 5.0% by weight of said Portland cement and said lithium compound is in an amount from about 0.005% to about 0.150% by weight of said Portland cement.

5. The composition of claim 4, 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.

6. The composition of claim 5, wherein said composition, after setting, results in at least a 17% increase in volume when setting occurs at a temperature of below 60 °

F.

7. A method for cementing a casing in a bore of a well having a borehole wall, comprising:

placing a cement slurry composition between the casing and the borehole wall, which composition comprises a Portland cement;

a calcium aluminate cement in an amount from about 0.5% to about 8.0% by weight of said Portland cement; and

a lithium compound in an amount from about 0.001% to about 0.500% 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;

wherein said borehole wall and said casing are at a temperature below about 100°

F.

8. The method of claim 7, 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.

9. The method of claim 8, wherein said borehole wall and said casing are at a temperature below about 73°

F. (23°

C.).

10. The method of claim 9 further comprising mixing the components of the cement composition using mixing equipment.

11. The method of claim 9 wherein the cement composition is introduced into the wellbore using one or more pumps.