Cement Composition Comprising Nano-Platelets

• US 20150152314A1
• Filed: 12/02/2013
• Published: 06/04/2015
• Est. Priority Date: 12/02/2013
• Status: Abandoned Application

• Current Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Original Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Inventors: Muthusamy, Ramesh, Deshpande, Abhimanyu Pramod, Senapati, Dibyadarshani, Patil, Rahul Chandrakant
• Application Number:
  US14/094,029
• Publication Number:
  US 20150152314A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: C04B 14/024 Graphite
• CPC Class Codes: C04B 14/026 of particular shape, e.g. nanotubes
• CPC Class Codes: C04B 2103/408 Dispersants
• CPC Class Codes: C04B 24/163 obtained by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: C04B 24/22 Condensation or polymerisation products thereof
• CPC Class Codes: C04B 24/2647 containing polyether side chains
• 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 21/062 by mixing components
• CPC Class Codes: E21B 33/13 Methods or devices for cementing, for plugging holes, crevices or the like

Abstract

A method of cementing a subterranean formation includes providing a cement composition comprising cementitious material, aqueous base fluid, graphene nano-platelets, and a dispersant; introducing the cement composition into a subterranean formation; and allowing the cement composition to set in the subterranean formation. Upon setting, the cement has at least one of enhanced compressive and tensile strength; reduced permeability; restricted penetration of carbon dioxide; and combinations thereof relative to an equivalent cement without graphene nano-platelets. Cement compositions include cementitious material, an aqueous base fluid, graphene nano-platelets, and a dispersant.

Claims

1. A method of cementing a subterranean formation comprising:

providing a cement composition comprising cementitious material, aqueous base fluid, graphene nano-platelets, and a dispersant;

introducing the cement composition into a subterranean formation; and

allowing the cement composition to set in the subterranean formation, wherein upon setting, said cement has at least one of enhanced compressive and tensile strength;

reduced permeability;

restricted penetration of carbon dioxide;

and combinations thereof relative to an equivalent cement without graphene nano-platelets.

2. The method of claim 1, wherein the dispersant comprises at least one dispersant selected from the group consisting of a sulfonated-formaldehyde-based dispersant, polystyrene sulfonate dispersant, a polycarboxylated ether dispersant, and any combination thereof.

3. The method of claim 1, wherein the dispersant is present in the amount of about 0.01 to about 0.2 gal/sack.

4. The method of claim 1, wherein the graphene nano-platelets are present in an amount of about 0.05% to about 3.0% by weight of cement.

5. The method of claim 1, wherein the graphene nano-platelets are aggregates of sub-micron platelets with diameter of about 2 to about 25 microns.

6. The method of claim 5, wherein thickness of the aggregates of sub-micron platelets is about 2 to about 10 nanometers.

7. The method of claim 1, wherein the aqueous base fluid comprises at least one of fresh water;

brackish water;

saltwater; and

combinations thereof.

8. The method of claim 1, wherein the aqueous base fluid is present in the cement composition in an amount of from about 20% to about 80% by weight of cement.

9. The method of claim 1, wherein the cementitious material comprises at least one of Portland cements;

gypsum cements;

high alumina content cements;

slag cements;

high magnesia content cements;

shale cements;

acid/base cements;

fly ash cements;

zeolite cement systems;

kiln dust cement systems;

microfine cements;

metakaolin;

pumice; and

combinations thereof.

10. The method of claim 1, further comprising at least one of resins;

latex;

stabilizers;

silica;

pozzolans;

microspheres;

aqueous superabsorbers;

viscosifying agents;

suspending agents;

dispersing agents;

salts;

accelerants;

surfactants;

retardants;

defoamers;

settling-prevention agents;

weighting materials;

fluid loss control agents;

elastomers;

vitrified shale;

gas migration control additives;

formation conditioning agents; and

combinations thereof.

11. The method of claim 1, wherein the density of the cement before curing is from about 7 pounds per gallon to about 20 pounds per gallon.

12. The method of claim 1, wherein the dispersant is not a nanoscale material.

13. A well cement composition comprising:

cementitious material;

aqueous base fluid;

graphene nano-platelets; and

a dispersant, wherein upon curing, said cement has at least one of enhanced compressive and tensile strength;

reduced permeability;

restricted penetration of carbon dioxide; and

combinations thereof relative to an equivalent cement without graphene nano-platelets.

14. The cement composition of claim 13, wherein the dispersant comprises at least one dispersant selected from the group consisting of a sulfonated-formaldehyde-based dispersant, polystyrene sulfonate dispersant, a polycarboxylated ether dispersant, and any combination thereof.

15. The cement composition of claim 13, wherein the graphene nano-platelets are present in an amount of about 0.05% to about 3.0% by weight of cement.

16. The cement composition of claim 13, wherein the graphene nano-platelets are aggregates of sub-micron platelets with diameter of about 2 to about 25 microns.

17. The cement composition of claim 13, wherein thickness of the aggregates of sub-micron platelets is about 2 to about 10 nanometers.

18. The cement composition of claim 13, wherein the aqueous base fluid comprises at least one of fresh water;

brackish water;

saltwater; and

combinations thereof.

19. The cement composition of claim 13, wherein the aqueous base fluid is present in the cement composition in an amount of from about 20% to about 80% by weight of cement.

20. The cement composition of claim 13, wherein the cementitious material comprises at least one of Portland cements;

gypsum cements;

high alumina content cements;

slag cements;

high magnesia content cements;

shale cements;

acid/base cements;

fly ash cements;

zeolite cement systems;

kiln dust cement systems;

microfine cements;

metakaolin;

pumice; and

combinations thereof.

21. The cement composition of claim 13, further comprising at least one of resins;

latex;

stabilizers;

silica;

pozzolans;

microspheres;

aqueous superabsorbers;

viscosifying agents;

suspending agents;

dispersing agents;

salts;

accelerants;

surfactants;

retardants;

defoamers;

settling-prevention agents;

weighting materials;

fluid loss control agents;

elastomers;

vitrified shale;

gas migration control additives;

formation conditioning agents; and

combinations thereof.

22. The cement composition of claim 13, wherein the density of the cement before curing is from about 7 pounds per gallon to about 20 pounds per gallon.

23. The cement composition of claim 13, wherein the dispersant is not a nanoscale material.

24. A wellbore cementing system comprising:

an apparatus configured to;

provide a cement composition comprising cementitious material, aqueous base fluid, graphene nano-platelets, and a dispersant;

introduce the cement composition into a subterranean formation; and

allow the cement composition to set in the subterranean formation, wherein upon setting, said cement has at least one of enhanced compressive and tensile strength;

reduced permeability;

restricted penetration of carbon dioxide; and

combinations thereof relative to an equivalent cement without graphene nano-platelets.