# US 10,479,926 B2 · Polyamino-functionalized nanoparticles as hardeners for particulate consolidation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,479,926 B2 - Document ID: US10479926B2 - Status: Granted - Kind: B2 - Application number: 15/543,764 - Filed: 2016-01-19 - Published: 2018-10-11 - Granted: 2019-11-19 - Earliest claimed: 2015-02-17 - Assignees: Halliburton Energy Services, Inc. - Applicants: Halliburton Energy Services, Inc. - Inventors: Rajender Salla; Vikesh Singh Baghel; Philip D. Nguyen - Web page: https://patentgrep.com/patent/US10479926B2 ## CPC - C09K 8/5755: {obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds} - C09K 8/035: Organic additives - C09K 8/5751: {Macromolecular compounds (C09K8/5756 takes precedence)} - E21B 43/04: Gravelling of wells - E21B 43/267: reinforcing fractures by propping - C09K 2208/10: Nanoparticle-containing well treatment fluids - C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS ## Abstract Systems and methods for stabilizing portions of a subterranean formation, including portions of a subterranean formation having unconsolidated particulates, using a consolidating agent comprising polyamino-functionalized nanoparticles are provided. Certain of the methods include the steps of providing a treatment fluid comprising a base liquid and polyamino-functionalized nanoparticles; and introducing the treatment fluid into a portion of a subterranean formation. Treatment fluids comprising polyamino-functionalized nanoparticles include gravel packing fluids, consolidation fluids, and hydraulic fracturing fluids are also provided. ## Claims ### Claim 1 A method comprising: providing a treatment fluid comprising a base liquid and polyamino-functionalized nanoparticles; introducing the treatment fluid into a portion of a subterranean formation that comprises unconsolidated particulates; contacting the portion of the subterranean formation with a hardenable resin composition; and allowing the polyamino-functionalized nanoparticles to at least partially cure the hardenable resin composition, whereby the cured hardenable resin composition consolidates at least a portion of the unconsolidated particulates in the subterranean formation. ### Claim 2 (depends on 1) The method of claim 1, wherein the polyamino-functionalized nanoparticles comprise a nanoparticle core comprises at least one material selected from the group consisting of: silica, alumina, iron II oxide, iron III oxide, nickel oxide, zinc oxide, magnesium oxide, boron nitride, aluminum nitride, elemental carbon, and any combination thereof. ### Claim 3 (depends on 1) The method of claim 1, wherein the polyamino-functionalized nanoparticles comprise one or more amino-terminated polymers, at least one of the amino-terminated polymers selected from the group consisting of: polyethyleneimine, polypropyleneimine, polyamidoamine, polylysine, poly(dimethylaminoethyl methacrylate), and any combination thereof. ### Claim 4 (depends on 1) The method of claim 1, wherein the polyamino-functionalized nanoparticles are coated on particulates suspended in the treatment fluid. ### Claim 5 (depends on 1) The method of claim 1, wherein the treatment fluid further comprises a hardenable resin composition. ### Claim 6 A treatment fluid composition for treating a subterranean formation, the treatment fluid composition comprising a base liquid and particulates, wherein the particulates are at least partially coated with polyamino-functionalized nanoparticles and a hardenable resin composition, and the polyamino-functionalized nanoparticles comprise a nanoparticle core that comprises at least one material selected from the group consisting of silica, alumina, iron II oxide, iron III oxide, nickel oxide, zinc oxide, magnesium oxide, boron nitride, aluminum nitride, elemental carbon, and any combination thereof. ### Claim 7 (depends on 6) The treatment fluid composition of claim 6, wherein the polyamino-functionalized nanoparticles comprise one or more polyamino-terminated polymers, at least one of the amino-terminated polymers selected from the group consisting of polyethyleneimine, polypropyleneimine, polyamidoamine, polylysine, poly(dimethylaminoethyl methacrylate, and any combination thereof. ### Claim 8 (depends on 6) The treatment fluid composition of claim 6, wherein the polyamino-terminated polymers comprise 200 terminal amino functionalities or more per polymer. ### Claim 9 (depends on 8) The treatment fluid composition of claim 8, wherein at least a portion of the polyamino-terminated polymers is modified to include terminal boron trifluoride functionalities. ### Claim 10 A method comprising: providing a sand control screen assembly disposed within a wellbore penetrating a subterranean formation; providing a treatment fluid comprising a base fluid, a plurality of gravel particulates, and a hardening agent comprising polyamino-functionalized nanoparticles; and forming a gravel pack proximal to the sand control screen assembly with the gravel packing treatment fluid. ### Claim 11 (depends on 10) The method of claim 10, wherein the treatment fluid further comprises a hardenable resin composition. ### Claim 12 (depends on 11) The method of claim 11, wherein forming a gravel pack comprises allowing the hardening agent comprising polyamino-functionalized nanoparticles to at least partially consolidate the gravel pack. ### Claim 13 (depends on 12) The method of claim 12, allowing the hardening agent comprising polyamino-functionalized nanoparticles to at least partially consolidate the gravel pack comprises allowing the hardening agent comprising polyamino-functionalized nanoparticles and hardenable resin composition to cure. ### Claim 14 (depends on 13) The method of claim 13, wherein the treatment fluid does not comprise a catalyst to promote curing of the hardening agent comprising polyamino-functionalized nanoparticles and hardenable resin composition. ### Claim 15 (depends on 10) The method of claim 10, wherein the polyamino-functionalized nanoparticles comprise a nanoparticle core composed of silica and a plurality of branched polyamidoamine polymers. ### Claim 16 (depends on 10) The method of claim 10, wherein at least a portion of the hardening agent comprising polyamino-functionalized nanoparticles is provided in a coating on the surface of the gravel particulates.