# US 2009/0260544 A1 · Well Treatment Compositions and Methods Utilizing Nano-Particles > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2009/0260544 A1 - Document ID: US20090260544A1 - Status: Published application - Kind: A1 - Application number: 12/426,393 - Filed: 2009-04-20 - Published: 2009-10-22 - Earliest claimed: 2007-05-10 - Assignees: Halliburton Energy Services, Inc. - Inventors: Craig W. Roddy; Jiten Chatterji; Roger Cromwell - Web page: https://patentgrep.com/patent/US20090260544A1 ## CPC - C09K 8/467: containing additives for specific purposes - 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)} - C04B 28/02: containing hydraulic cements other than calcium sulfates - C09K 8/032: {Inorganic additives} - C09K 8/665: {containing inorganic compounds (proppants C09K8/80)} - C09K 2208/10: Nanoparticle-containing well treatment fluids - Y02W 30/91: Use of waste materials as fillers for mortars or concrete - Y10S 507/906: Solid inorganic additive in defined physical form - Y10S 507/924: with specified propping feature - Y10S 977/963: Miscellaneous - C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE - C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE - Y02W: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ## Abstract Disclosed embodiments relate to well treatment fluids and methods that utilize nano-particles. Exemplary nano-particles are selected from the group consisting of particulate nano-silica, nano-alumina, nano-zinc oxide, nano-boron, nano-iron oxide, and combinations thereof. Embodiments also relate to methods of cementing that include the use of nano-particles. An exemplary method of cementing comprises introducing a cement composition into a subterranean formation, wherein the cement composition comprises cement, water and a particulate nano-silica. Embodiments also relate to use of nano-particles in drilling fluids, completion fluids, simulation fluids, and well clean-up fluids. ## Claims ### Claim 1 A cement composition comprising: hydraulic cement consisting essentially of at least one cement selected from the group consisting of API Class A Portland cement, API Class C Portland cement, API Class G Portland cement, APT Portland Class H cement, a pozzolana cement, a gypsum cement, a high alumina content cement, a slag cement, a silica cement, and a combination thereof; water; and particulate nano-silica having a particle size in the range of from about 1 nanometer to about 100 nanometers; and ### Claim 2 (depends on 1) The cement composition of claim 1 wherein at least a portion of the particulate nano-silica is encapsulated in a degradable material. ### Claim 3 (depends on 1) The cement composition of claim 1 wherein the particulate nano-silica has a particle size of from about 5 nanometers to about 50 nanometers. ### Claim 4 (depends on 1) The cement composition of claim 1 wherein the particulate nano-silica is present in the cement composition in a range of from about 1% to about 25% by weight of the hydraulic cement on a dry basis. ### Claim 5 (depends on 1) The cement composition of claim 1 wherein the cement composition further comprises at least one additive selected from the group consisting of a strength-retrogression additive, a set accelerator, a set retarder, a weighting agent, a weight-reducing additive, a lost-circulation material, a filtration-control additive, a dispersant, a defoaming agent, a foaming agent, and a combination thereof. ### Claim 6 (depends on 1) The cement composition of claim 1 wherein the cement composition further comprises at least one additive selected from the group consisting of crystalline silica, amorphous silica, a salt, a fiber, a hydratable clay, vitrified shale, a microsphere, fly ash, lime, latex, a thixotropic additive, and a combination thereof. ### Claim 7 (depends on 1) The cement composition of claim 1 wherein the cement composition further comprises at least one nano-particle selected from the group consisting of nano-alumina, nano-zinc oxide, nano-boron, nano-iron oxide, and a combination thereof. ### Claim 8 (depends on 1) The cement composition of claim 1 wherein a solids volume total in the cement composition comprises a maximized packing volume fraction. ### Claim 9 (depends on 1) The cement composition of claim 1 wherein the cement composition is foamed. ### Claim 10 A cement composition comprising; hydraulic cement consisting essentially of at least one cement selected from the group consisting of API Class A Portland cement, API Class C Portland cement, API Class G Portland cement, API Class H Portland cement, a pozzolana cement, a gypsum cement, a high-alumina-content cement, a silica cement, a slag cement, and a combination thereof, water; particulate nano-silica in an amount of about 1% to about 25% by weight of the hydraulic cement on a dry basis; and at least one additive selected from the group consisting of a strength-retrogression additive, a set accelerator, a set retarder, a weighting agent, a weight-reducing additive, a lost-circulation material, a filtration-control additive, a dispersant, a defoaming agent, a foaming agent, and a combination thereof. ### Claim 11 (depends on 10) The cement composition of claim 10 wherein at least a portion of the particulate nano-silica is encapsulated in a degradable material. ### Claim 12 (depends on 10) The cement composition of claim 10 wherein the particulate nano-silica has a particle size of from about 5 nanometers to about 50 nanometers. ### Claim 13 (depends on 10) The cement composition of claim 10 wherein the particulate nano-silica is present in the cement composition in a range of from about 5% to about 15% by weight of the hydraulic cement on a dry basis. ### Claim 14 (depends on 10) The cement composition of claim 10 wherein the cement composition further comprises at least one additive selected from the group consisting of crystalline silica, amorphous silica, a salt, a fiber, a hydratable clay, vitrified shale, a microsphere, fly ash, lime, latex, a thixotropic additive, and a combination thereof. ### Claim 15 (depends on 10) The cement composition of claim 10 wherein the cement composition further comprises at least one nano-particle selected from the group consisting of nano-alumina, nano-zinc oxide, nano-boron, nano-iron oxide, and a combination thereof. ### Claim 16 (depends on 10) The cement composition of claim 10 wherein a solids volume total in the cement composition comprises a maximized packing volume fraction. ### Claim 17 (depends on 10) The cement composition of claim 10 wherein the cement composition is foamed. ### Claim 18 A cement composition comprising: cement; water; and a contained nano-particle. ### Claim 19 (depends on 18) The cement composition of claim 18 wherein the cement comprises at least one hydraulic cement selected from the group consisting of API Class A Portland cement, API Class C Portland cement, API Class G Portland cement, API Portland Class H cement, a pozzolana cement, a gypsum cement, a high alumina content cement, a slag cement, a silica cement, and a combination thereof. ### Claim 20 (depends on 18) The cement composition of claim 18 wherein the at least one contained nano-particle comprises at least one nano-particle selected from the group consisting of particulate nano-silica, nano-alumina, nano-zinc oxide, nano-boron, nano-iron oxide, and combinations thereof. ### Claim 21 (depends on 18) The cement composition of claim 18 wherein the at least one contained nano-particle comprises contained particulate nano-silica. ### Claim 22 (depends on 18) The cement composition of claim 18 wherein the at least one contained nano-particle is enclosed within an outer coating or container. ### Claim 23 (depends on 18) The cement composition of claim 18 wherein the at least one contained nano-particle comprises a nano-particle having a particle size of about 5 nanometers to about 50 nanometers. ### Claim 24 (depends on 18) The cement composition of claim 18 wherein the at least one contained nano-particle is present in the cement composition in a range of from about 1% to about 25% by weight of the cement on a dry basis. ### Claim 25 (depends on 18) The cement composition of claim 18 wherein the cement composition further comprises at least one additive selected from the group consisting of a strength-retrogression additive, a set accelerator, a set retarder, a weighting agent, a weight-reducing additive, a lost-circulation material, a filtration-control additive, a dispersant, a defoaming agent, a foaming agent, and a combination thereof. ### Claim 26 (depends on 18) The cement composition of claim 18 wherein a solids volume total in the cement composition comprises a maximized packing volume fraction. ### Claim 27 (depends on 18) The cement composition of claim 18 wherein the cement composition is foamed.