Novel Cement Composition for Lost Circulation Application

• US 20160160109A1
• Filed: 11/25/2013
• Published: 06/09/2016
• Est. Priority Date: 11/25/2013
• Status: Active Grant

• Current Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Original Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Inventors: Patil, Sandip Prabhakar, Patil, Rahul Chandrakant, RAVI, Krishan M., SINGH, Sheetal, JOSEPH, TRISSA, Duffy, Marcus
• Granted Patent: US 10,479,923 B2
• Time in Patent Office: Days
• CPC Class Codes: C04B 12/04 Alkali metal or ammonium silicate cements ; Alkyl silicate cements; Silica sol cements; Soluble silicate cements alkali metal silicates per se, their preparation C01B33/32; ammonium silicates per se, their preparation C01C1/00
• CPC Class Codes: C04B 14/06 Quartz; Sand
• CPC Class Codes: C04B 14/10 Clay sepiolite C04B14/042; grog C04B18/025
• CPC Class Codes: C04B 14/28 of calcium
• CPC Class Codes: C04B 14/302 Aerogels
• CPC Class Codes: C04B 20/008 Micro- or nanosized fillers, e.g. micronised fillers with particle size smaller than that of the hydraulic binder colloidal silica C04B14/062 ; silica fume C04B18/146
• CPC Class Codes: C04B 2111/00008 Obtaining or using nanotechnology related materials
• CPC Class Codes: C04B 28/02 containing hydraulic cements other than calcium sulfates
• CPC Class Codes: C04B 28/04 Portland cements
• CPC Class Codes: C09K 8/467 containing additives for specific purposes
• CPC Class Codes: C09K 8/487 Fluid loss control additives; Additives for reducing or preventing circulation loss
• CPC Class Codes: E21B 33/14 for cementing casings into boreholes

Abstract

A method of cementing a subterranean formation includes providing a cement composition comprising cementitious material, aqueous base fluid, nanoparticles, synthetic clay, and a thixotropic modifier, where the solid materials are about 0 wt % to about 40 wt % of the total weight of the cement composition; introducing the cement composition into a subterranean formation; and allowing the cement composition to set in the subterranean formation. Cement compositions include cementitious material, aqueous base fluid, nanoparticles, synthetic clay, and a thixotropic modifier.

Claims

1. A method of cementing a subterranean formation comprising:

providing a cement composition comprising cementitious material, aqueous base fluid, nanoparticles, synthetic clay, and a thixotropic modifier, wherein the solid materials are about 0 wt % to about 40 wt % of the total weight of the cement composition;

introducing the cement composition into a subterranean formation; and

allowing the cement composition to set in the subterranean formation.

2. The method of claim 1, wherein the solid materials are about 10 wt % to about 20 wt % of the total weight of the cement composition.

3. The method of claim 1, wherein the nanoparticles comprise at least one of nano-silica, nanocarbonate, nanoalumina, and any combination thereof.

4. The method of claim 1, wherein the nanoparticles are present in the amount of about 0.1 to about 5 gal/sack.

5. The method of claim 1, wherein the nanoparticles have a diameter of about 2 to about 100 microns.

6. The method of claim 1, wherein the synthetic clay is present in an amount of about 0.1% to about 3.0% by weight of water.

7. The method of claim 1, wherein substantially no natural clay is added to the cement composition.

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

brackish water;

saltwater; and

combinations thereof.

9. 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.

10. 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.

11. 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.

12. The method of claim 1, wherein the density of the cement before curing is less than about 12 pounds per gallon.

13. The method of claim 1, wherein the thixotropic modifier is selected from is fumed silica, sodium silicate, silicic acid, and combinations thereof.

14. The method of claim 1, wherein the thixotropic modifier is present in the amount of about 0.1% to about 150%bwc.

15. A well cement composition comprising:

cementitious material;

aqueous base fluid;

nanoparticles;

synthetic clay; and

a thixotropic modifier, wherein the solid materials are about 0 wt % to about 40 wt % of the total weight of the cement composition.

16. The cement composition of claim 15, wherein the solid materials are about 10 wt % to about 20 wt % of the total weight of the cement composition.

17. The cement composition of claim 15, wherein the wherein the nanoparticles comprise at least one of nano-silica, nanocarbonate, nanoalumina, and any combination thereof.

18. The cement composition of claim 15, wherein the nanoparticles are present in the amount of about 0.1 to about 5 gal/sack.

19. The cement composition of claim 15, wherein the nanoparticles have a diameter of about 2 to about 100 microns.

20. The cement composition of claim 15, wherein the synthetic clay is present in an amount of 0.1% to about 3.0% by weight of water.

21. The cement composition of claim 15, wherein substantially no natural clay is added to the cement composition.

22. The cement composition of claim 15, wherein the aqueous base fluid comprises at least one of fresh water;

brackish water;

saltwater; and

combinations thereof.

23. The cement composition of claim 15, 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.

24. The cement composition of claim 15, 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.

25. The cement composition of claim 15, 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.

26. The cement composition of claim 15, wherein the density of the cement before curing is less than about 12 pounds per gallon.

27. The cement composition of claim 15, wherein the thixotropic modifier is selected from fumed silica, sodium silicate, silicic acid, and combinations thereof.

28. The cement composition of claim 15, wherein the thixotropic modifier is present in the amount of about 0.1% to about 150% bwc.

29. A wellbore cementing system comprising:

an apparatus configured to;

provide a cement composition comprising cementitious material, aqueous base fluid, nanoparticles, synthetic clay, and a thixotropic modifier, wherein the solid materials are about 0 wt % to about 40 wt % of the total weight of the cement composition;

introduce the cement composition into a subterranean formation; and

allow the cement composition to set in the subterranean formation.