Cement Admixture Including Polymers

• US 20160186036A1
• Filed: 09/04/2013
• Published: 06/30/2016
• Est. Priority Date: 09/04/2013
• Status: Active Grant

• Current Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Original Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Inventors: Lewis, Sam J., Kyriacos, Agapiou, Pisklak, Thomas J., Boul, Peter James, Otieno, Pauline Akinyi
• Granted Patent: US 10,717,916 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: C04B 2103/0079 Rheology influencing agents
• CPC Class Codes: C04B 24/163 obtained by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: C04B 24/2647 containing polyether side chains
• CPC Class Codes: C04B 24/2652 Nitrogen containing polymers, e.g. polyacrylamides, polyacrylonitriles
• CPC Class Codes: C04B 24/283 Polyesters
• CPC Class Codes: C04B 24/38 Polysaccharides or derivatives thereof C04B24/243 takes precedence
• CPC Class Codes: C04B 24/383 Cellulose or derivatives thereof
• CPC Class Codes: C04B 28/02 containing hydraulic cements other than calcium sulfates
• CPC Class Codes: C09K 8/467 containing additives for specific purposes
• CPC Class Codes: E21B 33/14 for cementing casings into boreholes

Abstract

Systems and methods for modifying rheology of a cement slurry are described. Systems and methods may include a composition including at least one of: one or more polycarboxylate ethers (PCEs); one or more functionalized polyacrylamide co-polymers; and one or more polysaccharide biopolymers (BP).

Claims

1. A composition for modifying rheology of a cement slurry, the composition comprising:

one or more polycarboxylate ethers (PCEs); and

one or more functionalized acrylamide co-polymers.

2. The composition of claim 1, further comprising an extended life cement slurry.

3. The composition of claim 1, wherein the one or more functionalized acrylamide co-polymers is an acrylamido-methyl-propane sulfonate polymer-N-functionalized acrylamide co-polymer.

4. The composition of claim 1, wherein the one or more functionalized acrylamide co-polymers is a co-polymer of acrylamide-methyl-propane and dimethylacrylamide.

5. The composition of claim 1, wherein the ratio of the one or more polycarboxylate ethers to the one or more functionalized acrylamide co-polymers is greater than or equal to 1.

6. The composition of claim 5, wherein the ratio of the one or more polycarboxylate ethers to the one or more functionalized acrylamide co-polymers is between approximately 1:

1 and approximately 10;

1.

7. A composition for modifying rheology of a cement slurry, the composition comprising:

one or more polycarboxylate ethers (PCEs);

one or more functionalized acrylamide co-polymers; and

one or more polysaccharide biopolymers (BP).

8. The composition of claim 7, further comprising an extended life cement slurry.

9. The composition of claim 7, wherein the one or more functionalized acrylamide co-polymers is an acrylamido-methyl-propane sulfonate polymer-N-functionalized acrylamide co-polymer.

10. The composition of claim 7, wherein the one or more functionalized acrylamide co-polymers is a co-polymer of acrylamide-methyl-propane and dimethylacrylamide.

11. The composition of claim 7, wherein the one or more polysaccharide biopolymers are selected from the group consisting of:

scleroglucan, carragenans, xanthan, welan, diutan gums, celluloses, hydroxyl ethyl celluloses, and combinations thereof.

12. The composition of claim 7, wherein the amount of the one or more polycarboxylate ethers is greater than the amount of the one or more functionalized acrylamide co-polymers, which is in turn greater than the amount of the one or more polysaccharide biopolymers.

13. The composition of claim 7, wherein the ratio of the one or more polycarboxylate ethers to the one or more functionalized acrylamide co-polymers to the one or more polysaccharide biopolymers is between approximately 9:

3;

1 and approximately 20;

2;

1.

14. A method of servicing a wellbore comprising:

providing an admixture composition comprising one or more polycarboxylate ethers (PCEs) and one or more functionalized acrylamide co-polymers to an extended life cement slurry; and

placing the cement composition in the subterranean formation.

15. The method of claim 14, further comprising allowing the cement composition to set in the subterranean formation.

16. The method of claim 14, wherein the one or more functionalized acrylamide co-polymers is an acrylamido-methyl-propane sulfonate polymer-N-functionalized acrylamide co-polymer.

17. The method of claim 14, wherein the one or more functionalized acrylamide co-polymers is a co-polymer of acrylamide-methyl-propane and dimethylacrylamide.

18. The method of claim 14, wherein the ratio of the one or more polycarboxylate ethers to the one or more functionalized acrylamide co-polymers is greater than or equal to 1.

19. The method of claim 14, wherein the admixture composition further comprises one or more polysaccharide biopolymers selected from the group consisting of:

scleroglucan, carragenans, xanthan, welan, diutan gums, celluloses, hydroxyl ethyl celluloses, and combinations thereof.

20. The method of claim 19, wherein the ratio of the one or more polycarboxylate ethers to the one or more functionalized acrylamide co-polymers to the one or more polysaccharide biopolymers is between approximately 9:

3;

1 and approximately 20;

2;

1.