FLUIDS CONTAINING CELLULOSE FIBERS AND CELLULOSE NANOPARTICLES FOR OILFIELD APPLICATIONS

• US 20170145285A1
• Filed: 11/22/2016
• Published: 05/25/2017
• Est. Priority Date: 11/23/2015
• Status: Active Grant

• Current Assignee: Schlumberger Technology Corporation (SLB)
• Original Assignee: Schlumberger Technology Corporation (SLB)
• Inventors: Panga, Mohan Kanaka Raju, Lafitte, Valerie Gisele Helene, Berry, Richard
• Granted Patent: US 10,689,564 B2
• Time in Patent Office: Days
• CPC Class Codes: C09K 2208/08 Fiber-containing well treatment fluids
• CPC Class Codes: C09K 2208/30 Viscoelastic surfactants [VES]
• CPC Class Codes: C09K 8/035 Organic additives
• CPC Class Codes: C09K 8/487 Fluid loss control additives; Additives for reducing or preventing circulation loss
• CPC Class Codes: C09K 8/514 of natural origin, e.g. polysaccharides, cellulose C09K8/512 takes precedence
• CPC Class Codes: C09K 8/5758 of natural origin, e.g. polysaccharides, cellulose C09K8/5756 takes precedence
• CPC Class Codes: C09K 8/602 containing surfactants
• CPC Class Codes: C09K 8/62 Compositions for forming crevices or fractures
• CPC Class Codes: C09K 8/90 of natural origin, e.g. polysaccharides, cellulose

Abstract

Treatment fluids containing a mixture of cellulose fibers and cellulose nanoparticles and methods for treating a subterranean formation are disclosed. The methods include introducing a treatment fluid into a subterranean formation, the treatment fluid containing a mixture of cellulose fibers and cellulose nanoparticles.

Claims

1. A method for treating a subterranean formation comprising:

combining a rheology modifier, a mixture of cellulose nanoparticles and cellulose fibers, and a solvent to form a treatment fluid, wherein

the cellulose nanoparticles have a negative zeta potential or a positive zeta potential, and a length in the range of from about 50 nm to about 500 nm, and

the cellulose fibers have a length of from about 10 microns to about 500 microns; and

introducing the treatment fluid into a subterranean formation.

2. The method for treating a subterranean formation of claim 1, wherein about 0.05 to about 5% by weight based on the total weight of the treatment fluid is the mixture of cellulose nanoparticles and cellulose fibers.

3. The method for treating a subterranean formation of claim 1, wherein the cellulose fibers are present in an amount of from about 25% to about 75% by weight based on the total weight of the mixture of cellulose nanoparticles and cellulose fibers.

4. The method for treating a subterranean formation of claim 1, wherein the cellulose nanoparticles are present in an amount of from about 25% to about 75% by weight based on the total weight of the mixture of cellulose nanoparticles and cellulose fibers.

5. The method for treating a subterranean formation of claim 1, wherein the rheology modifier is a polymer.

6. The method for treating a subterranean formation of claim 1, wherein the rheology modifier is a viscoelastic surfactant.

7. The method for treating a subterranean formation of claim 1, wherein at least a portion of the cellulose nanoparticles comprise a rod-like nanocrystalline cellulose particle (NCC particle) having a crystalline structure.

8. The method for treating a subterranean formation of claim 7, wherein the NCC particle has a surface that is functionalized with one or more member selected from the group consisting sulfates, phosphates, ammonium, amine, and carboxylate groups.

9. The method for treating a subterranean formation of claim 1, wherein the treatment fluid is selected from the group consisting of a fracturing fluid, well control fluid, well kill fluid, well cementing fluid, acid fracturing fluid, acid diverting fluid, a stimulation fluid, a sand control fluid, a completion fluid, a wellbore consolidation fluid, a remediation treatment fluid, a spacer fluid, a drilling fluid, a frac-packing fluid, water conformance fluid and gravel packing fluid.

10. A fluid for treating a subterranean formation comprising:

a solvent;

a rheology modifier; and

a composition comprising a mixture of cellulose fibers and cellulose nanoparticles;

wherein

the cellulose nanoparticles have a negative zeta potential or a positive zeta potential, and a length in the range of from about 50 nm to about 500 nm, and

the cellulose fibers have a length of from about 50 microns to about 500 microns.

11. The fluid for treating the subterranean formation of claim 10, wherein about 0.1 to about 2% by weight based on the total weight of the treatment fluid is the mixture of cellulose nanoparticles and cellulose fibers.

12. The fluid for treating the subterranean formation of claim 10, wherein the cellulose fibers are present in an amount of from about 25% to about 50% by weight based on the total weight of the mixture of cellulose nanoparticles and cellulose fibers.

13. The fluid for treating the subterranean formation of claim 10, wherein the cellulose nanoparticles are present in an amount of from about 50% to about 75% by weight based on the total weight of the mixture of cellulose nanoparticles and cellulose fibers.

14. The fluid for treating the subterranean formation of claim 10, wherein at least a portion of the cellulose nanoparticles have a negative zeta potential.

15. The fluid for treating the subterranean formation of claim 14, wherein the negative zeta potential is imparted by an anionic functional group that is present on the surface of the cellulose nanoparticles.

16. The fluid for treating the subterranean formation of claim 10, wherein each of the cellulose nanoparticles have an outer surface having a percent surface functionalization of from about 5 to about 90 percent.

17. The fluid for treating the subterranean formation of claim 16, wherein the outer surface of each of cellulose nanoparticles comprises one or more member selected from the group consisting of sulfates, phosphates, amines, and carboxylates.

18. The fluid for treating the subterranean formation of claim 10, wherein at least a portion of cellulose nanoparticles are a rod-like nanocrystalline cellulose particle (NCC particle) having a crystalline structure.

19. The fluid for treating the subterranean formation of claim 10, wherein the solvent is water or brine.

20. The fluid for treating the subterranean formation of claim 10, wherein the rheology modifier is a polymer.

21. The fluid for treating the subterranean formation of claim 10, wherein the rheology modifier is a viscoelastic surfactant.

22. The fluid for treating the subterranean formation of claim 10, wherein the fluid is selected from the group consisting of a fracturing fluid, well control fluid, well kill fluid, well cementing fluid, acid fracturing fluid, acid diverting fluid, a stimulation fluid, a sand control fluid, a completion fluid, a wellbore consolidation fluid, a remediation treatment fluid, a drilling fluid, a spacer fluid, a frac-packing fluid, water conformance fluid and gravel packing fluid.