Nanocellulose materials for oilfield applications

Patent metadata

Field	Value
Publication number	US-2016168443-A1
Application number	US-201414572433-A
Country	US
Kind code	A1
Filing date	Dec 16, 2014
Priority date	Dec 16, 2014
Publication date	Jun 16, 2016
Grant date	—

Abstract

Treatment fluids and methods for treating a subterranean formation are disclosed that include introducing a treatment fluid into a subterranean formation, the treatment fluid containing temporarily inactive cellulose nanoparticles.

First claim

What is claimed is:

1 . A fluid for treating a subterranean formation comprising:
a solvent; and a composition comprising temporarily inactive cellulose nanoparticles.

2 . The fluid for treating the subterranean formation of claim 1 , wherein at least a portion of the temporarily inactive cellulose nanoparticles are sterically stabilized inactive cellulose nanoparticles.

3 . The fluid for treating the subterranean formation of claim 1 , wherein at least a portion of the temporarily inactive cellulose nanoparticles are electrostatically stabilized inactive cellulose nanoparticles.

4 . The fluid for treating the subterranean formation of claim 1 , wherein the fluid contains the temporarily inactive cellulose nanoparticles in an amount of from about 0.001 wt % to about 10 wt % of the total weight of the fluid.

5 . The fluid for treating the subterranean formation of claim 1 , 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.

6 . The fluid for treating the subterranean formation of claim 1 , wherein each of the temporarily inactive cellulose nanoparticles has an outer surface having a percent surface functionalization of from about 5 to about 90 percent.

7 . The fluid for treating the subterranean formation of claim 6 , wherein the outer surface of each of the temporarily inactive cellulose nanoparticles comprises one or more member selected from the group consisting of polymers, halides, ethers, aldehydes, ketones, esters, amines, amides, sulfate esters, phosphates, and carboxylates.

8 . The fluid for treating the subterranean formation of claim 1 , further comprising active cellulose nanoparticles.

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

10 . A method for treating a subterranean formation comprising:
mixing temporarily inactive cellulose nanoparticles with a solvent to form a homogenous treatment fluid; and introducing the homogeneous treatment fluid into a subterranean formation.

11 . The method for treating a subterranean formation of claim 10 , wherein at least a portion of the temporarily inactive cellulose nanoparticles comprise a rod-like nanocrystalline cellulose particle (NCC particle) having a crystalline structure.

12 . The method for treating a subterranean formation of claim 11 , wherein the NCC particle is a coated NCC particle.

13 . The method for treating a subterranean formation of claim 12 , further comprising forming aggregated NCC particles after the homogeneous treatment fluid is formed by initiating the degradation of at least a portion of the coating of the NCC particle.

14 . The method for treating a subterranean formation of claim 13 , wherein the degradation of the coating of the NCC particle is initiated at a time that is in the range of from about 2 minutes to about 7 hours after of the formation of the homogeneous treatment fluid.

15 . The method for treating a subterranean formation of claim 13 , wherein the temporarily inactive cellulose nanoparticles are non-agglomerated in the homogeneous treatment fluid prior to the initiation of the degradation of the coating of the NCC particle.

16 . The method for treating a subterranean formation of claim 11 , wherein the homogeneous treatment fluid is an aqueous fluid, and the NCC particle is encapsulated by a temporary electric double layer.

17 . The method for treating a subterranean formation of claim 12 , further comprising forming aggregated NCC particles after the homogeneous treatment fluid is formed by eliminating the electronic double layer, wherein the electronic double layer is eliminated by increasing a salt concentration of the homogeneous treatment fluid.

18 . The method for treating a subterranean formation of claim 17 , wherein prior to the elimination of the electronic double layer the temporarily inactive cellulose nanoparticles are non-agglomerated in the homogeneous treatment fluid.

19 . The method for treating a subterranean formation of claim 10 , wherein the homogeneous treatment fluid is a slurry.

20 . The method for treating a subterranean formation of claim 10 , wherein the homogeneous treatment fluid further comprises at least one functional additive selected from the group consisting of fly ash, a silica compound, a fluid loss control additive, an emulsion, latex, a dispersant, an accelerator, a retarder, a crosslinker, a salt, mica, sand, a fiber, a formation containing agent, fumed silica, bentonite, a microsphere, a carbonate, barite, hematite, an epoxy resin and a curing agent.

21 . The method for treating a subterranean formation of claim 10 , wherein the homogeneous treatment fluid further comprises a hydratable polymer.

22 . The method for treating a subterranean formation of claim 10 , wherein the homogeneous treatment fluid is an aqueous fluid.

23 . The method for treating a subterranean formation of claim 10 , wherein the homogeneous 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.

24 . The method for treating a subterranean formation of claim 10 , wherein a surface of temporarily inactive cellulose nanoparticles comprises one or more member selected from the group consisting of polymers, sulfate ester groups, phosphates, and carboxylate groups.

25 . The method for treating a subterranean formation of claim 10 , wherein the homogeneous treatment fluid is a stabilized foamed cement slurry.

Assignees

• Schlumberger Technology Corp

Inventors

• Lafitte Valerie Gisele Helene
• Panga Mohan K R
• Yakovlev Andrey Vladimirovich
• Horvath Szabo Geza
• Fernandez Del Valle Julia

Classifications

• C09K2208/10

  Nanoparticle-containing well treatment fluids · CPC title

• C09K8/56

  Compositions for consolidating loose sand or the like around wells without excessively decreasing the permeability thereof (compositions for plastering borehole walls C09K8/50; {Soil-conditioning materials or soil-stabilising materials in general C09K17/00}) · CPC title

• C09K8/40

  Spacer compositions, e.g. compositions used to separate well-drilling from cementing masses · CPC title

• C09K8/10 Primary

  Cellulose or derivatives thereof · CPC title

• C09K8/52

  Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning · CPC title