Carbon dioxide-resistant Portland based cement composition

Patent metadata

Field	Value
Publication number	US-9850167-B2
Application number	US-201113223081-A
Country	US
Kind code	B2
Filing date	Aug 31, 2011
Priority date	Aug 31, 2011
Publication date	Dec 26, 2017
Grant date	Dec 26, 2017

Abstract

The invention provides a carbon dioxide-resistant hydraulic cement composition. The inventive composition comprises a Portland cement, Class C fly ash and water. The Class C fly ash is present in the composition in an amount in the range of from about 5% to less than about 30% by weight based on the total weight of the cementitious components in the composition. In another aspect, the invention provides a method of cementing in a carbon dioxide environment. In yet another aspect, the invention provides a method of enhancing the recovery of a hydrocarbon fluid from a subterranean formation.

First claim

What is claimed is:

1. A method of cementing in a carbon dioxide environment, comprising:
preparing a carbon dioxide-resistant hydraulic cement composition, said carbon dioxide-resistant hydraulic cement composition including:
a Portland cement;
Class C fly ash present in an amount in a range of from 5% to less than 30% by weight based on the total weight the cementitious components in said composition; and
water present in an amount sufficient to form a slurry;

placing said carbon dioxide-resistant hydraulic cement composition in said carbon dioxide environment; and
allowing said carbon dioxide-resistant hydraulic cement composition to set.

2. The method of claim 1 , wherein said Portland cement of said carbon dioxide-resistant hydraulic cement composition is selected from API Class G type Portland cement and API Class H type Portland cement.

3. The method of claim 2 , wherein said Portland cement of said carbon dioxide-resistant hydraulic cement composition is API Class H type Portland cement.

4. The method of claim 1 , wherein said Class C fly ash is present in said composition in an amount in the range of from 15% to 28% by weight based on the total weight the cementitious components in said composition.

5. The method of claim 1 , wherein said Class C fly ash is present in said composition in an amount of from 5% to less than 30% by weight based on the total weight of said Portland cement and Class C fly ash in said composition.

6. A method of enhancing the recovery of a hydrocarbon from a subterranean formation, comprising:
placing one or more injection wells into said subterranean formation, said injection well including a casing cemented into place using a hydraulic cement composition;
placing one or more production wells into said subterranean formation, said production well(s) including a casing cemented into place using a hydraulic cement composition;
injecting a flooding composition including carbon dioxide and water through one or more of said injection wells into said subterranean formation in order to pressurize said subterranean formation and drive said hydrocarbon toward said production well(s), wherein said hydraulic cement composition utilized to cement the casing into place in at least one of said injection well(s) and said production well(s) is a carbon dioxide corrosion-resistant hydraulic cement composition that includes:
a Portland cement;
Class C fly ash present in an amount in a range of from 5% to less than 30% by weight based on the total weight the cementitious components in said composition; and
water present in an amount sufficient to form a slurry.

7. The method of claim 6 , wherein said Portland cement of said carbon dioxide-resistant hydraulic cement composition is selected from API Class G type Portland cement and API Class H type Portland cement.

8. The method of claim 7 , wherein said Portland cement of said carbon dioxide-resistant hydraulic cement composition is API Class H type Portland cement.

9. The method of claim 6 , wherein said carbon dioxide-resistant hydraulic cement composition further comprises a fluid loss additive.

10. The method of claim 6 , wherein said Class C fly ash is present in said composition in an amount in the range of from 15% to 28% by weight based on the total weight the cementitious components in said composition.

11. The method of claim 10 , wherein said Class C fly ash is present in said composition in an amount of from 5% to less than 30% by weight based on the total weight of said Portland cement and Class C fly ash in said composition.

Assignees

• Santra Ashok K
• Kulakofsky David
• Halliburton Energy Services Inc

Inventors

• Santra Ashok K
• Kulakofsky David

Classifications

• C04B2103/0036

  Type H · CPC title

• C04B28/04 Primary

  Portland cements · CPC title

• C09K8/467

  containing additives for specific purposes · CPC title

• C04B7/02

  Portland cement · CPC title

• C04B28/021

  Ash cements, e.g. fly ash cements (fly ash as filler C04B18/08); Cements based on incineration residues, e.g. alkali-activated slags from waste incineration (alkali-activated combustion residues as such C04B7/243; mixtures of the lime-pozzuolane type C04B28/18); Kiln dust cements · CPC title