Nitrogen Is Attached Directly Or Indirectly To The Acrylic Acid Monomer Or Derivative By Nonionic Bonding (e.g., Acrylamide, Acrylonitrile, Etc.) Patents (Class 507/225)
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Patent number: 12215278Abstract: The present invention provides methods of increasing oil production, hydraulic fracturing, and carbon sequestration in subterranean formations. Surface treatment compositions used in these methods are also disclosed. The methods comprise: (1) injecting into the well the surface treatment composition with or without a pretreatment; (2) allowing one or more components of the surface treatment composition to chemically bond to a surface of the subterranean formation; and (3) removing oil from the well or from one or more production wells that are in fluid communication with the well. The surface treatment composition comprises (a) a fluid comprising a hydrocarbon liquid, a supercritical fluid, and/or a liquefied gas; and (b) a surface modifying component. The component (b) comprises (i) an organometallic compound and (ii) an organosilane having halogen substituents. In carbon sequestration, the fluid (a) contains carbon dioxide.Type: GrantFiled: June 2, 2023Date of Patent: February 4, 2025Assignee: ACULON INC.Inventors: Eric L. Hanson, Majid Monji, Elizabeth Cambre, Edward Hughes
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Patent number: 12129434Abstract: A hydraulic fracturing method is disclosed. A small proportion of a nonionic surfactant is used in combination with an acrylamide polymer emulsion friction reducer, the proppant, and the base water to boost the viscosity of the fracturing fluid. The nonionic surfactant has a calculated HLB within the range of 10 to 17. The nonionic surfactants include selected aralkylated phenol ethoxylates, amine or amidoamine ethoxylates, mixed EO/PO alcohol alkoxylates, ethoxylated alcohols, ethoxylated amides, and alkylphenol ethoxylates. The nonionic surfactant boosts the viscosity of the fracturing fluid, promotes proppant transfer, and enables more-efficient hydrocarbon production.Type: GrantFiled: June 24, 2021Date of Patent: October 29, 2024Assignee: STEPAN COMPANYInventors: Alhad Phatak, Yonglin Ren, Brian Seymour-Loya, Aaron Sanders
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Patent number: 12116531Abstract: This disclosure relates to an organic gel formulation composition for blocking fluids in naturally fractured carbonate reservoirs, for salinity conditions up to 31,870.50 ppm of total dissolved solids and temperatures up to 120° C., that is, for the purpose temporarily isolating areas of the reservoirs, that will be treated with chemical and radioactive products to quantify the oil remaining in them, the stability of the gel is controlled in a certain period of time, through the synergic effect of the supramolecular interaction between the components of the gel formulation. A disclosed composition may include 0.3 to 1% by weight of a copolymer of acrylamide butyl tertiary of sulfonic acid and acrylamide, and 0.12 to 0.4% by weight of phenol and from 0.18 to 0.6% by weight of hexamethylenetetramine.Type: GrantFiled: October 7, 2021Date of Patent: October 15, 2024Assignee: INSTITUTO MEXICANO DEL PETROLEOInventors: Jetzabeth Ramírez Sabag, Alejandro Ortega Rodriguez, Norma Araceli García Muñoz, Maribel Amador Ramírez, Ana Patricia Medina Montiel
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Patent number: 12049529Abstract: Provided is a quaternary ammonium surfmer and copolymers thereof. The surfmer may have the following general formula (I): N+—R1R2R3R4 (X?), where: R1 and R2 may independently be H or a C1-C3 alkyl, R3 may be a C19+ amidoalkyl group, R4 may be a C3-C6 alkyl having a terminal olefin double bond group, and X may be a halogen. Further provided is a method for synthesizing the quaternary ammonium surfmer, copolymers thereof, and a method for recovering hydrocarbons from a subterranean formation that may include injecting a treatment fluid comprising the quaternary ammonium surfmer or copolymers thereof into the subterranean formation.Type: GrantFiled: May 30, 2023Date of Patent: July 30, 2024Assignee: SAUDI ARABIAN OIL COMPANYInventors: Xuan Zhang, Ming Han, Limin Xu
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Patent number: 11898085Abstract: The present disclosure relates to downhole fluid additives including a clay, a hydroxylated polymer, a cation, and water. The disclosure further relates to downhole fluids, including drilling fluids, spaces, cements, and proppant delivery fluids containing such as downhole fluid additive and methods of using such fluids. The downhole fluid additive may have any of a variety of functions in the downhole fluid and may confer any of a variety of properties upon it, such as salt tolerance or desired viscosities even at high downhole temperatures.Type: GrantFiled: October 5, 2021Date of Patent: February 13, 2024Assignee: Halliburton Energy Services, Inc.Inventors: Vivek S. Goel, Peter James Boul, Xueyu Pang, Lee J. Hall, Jay P. Deville, Samuel J. Lewis, B. Raghava Reddy, Trissa Joseph, Xiangnan Ye
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Patent number: 11844349Abstract: A method for removing or preventing a microbial growth, biofilm, biomass and/or mineral deposit on a hard surface inside an SO2 scrubber is disclosed. In particular, biocide compositions may be dosed in pulse or continuously for the reduction and prevention of biofilms on the hard surfaces inside an SO2 scrubber. A biocide composition disclosed here uses one or more non-oxidizing biocides, especially a mixture of one or more quaternary ammonium compounds and one or more other biocides.Type: GrantFiled: June 22, 2021Date of Patent: December 19, 2023Assignee: Ecolab USA Inc.Inventors: Junzhong Li, Chris Nagel, Laura Rice
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Patent number: 11802235Abstract: A fracturing fluid may comprise an aqueous based fluid and halloysite nanotubes, wherein the halloysite nanotubes comprise a cargo.Type: GrantFiled: August 2, 2021Date of Patent: October 31, 2023Assignee: Halliburton Energy Services, Inc.Inventors: Liang Xin Xu, Philip Nguyen, Kai He
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Patent number: 11781059Abstract: The present invention relates to a composition for an enhanced oil recovery process, said composition comprising (a) one or more anionic cocogem surfactants; b) one or more surfactants based on nonionic vegetable fatty acids (or their synthetic analogues); c) optionally one or more, preferably commercially available, co-surfactants; d) optionally one or more agents with phase transfer property, preferably an alcohol; and e) polyacrylamide as a flow modifier.Type: GrantFiled: March 28, 2019Date of Patent: October 10, 2023Assignee: MOL Magyar Olaj és Gázipari Nyilvánosan MüködöRészvénytársaágInventors: László Bartha, Sándor Puskás, József Dudás, Roland Nagy, Árpád Vágó, István János Lakatos, Mária Törö
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Patent number: 11725102Abstract: Process of providing polyacrylamides to a site-of-use comprising at least the steps of mixing a polyacrylamide powder at a manufacturing site with an aqueous liquid, thereby obtaining a homogeneous aqueous polyacrylamide concentrate, transporting said concentrate in a transport unit from the manufacturing site to the site-of-use, and removing the homogeneous aqueous concentrate from the transport unit at the site-of-use. Process of treating subterranean, oil and/or gas bearing formations by injecting an aqueous treatment fluid into at least one wellbore, wherein the aqueous treatment fluid is manufactured by mixing at least an aqueous base fluid with said homogeneous aqueous polyacrylamide concentrate at the site-of-use.Type: GrantFiled: October 17, 2019Date of Patent: August 15, 2023Assignee: BASF SEInventors: Faissal-Ali El-Toufaili, Dennis Loesch, Anna-Corina Schmidt, Tobias Joachim Zimmermann, Markus Ostermayr, Jack F. Tinsley, Brent Busby, Daniel Barrera-Medrano
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Patent number: 11718781Abstract: A method for the preparation of a scale inhibitor and a method of inhibiting the formation of scale uses a water soluble polymeric gelling agent, in particular synthetic polymer, which has been degraded and reduced in its molecular weight.Type: GrantFiled: June 5, 2018Date of Patent: August 8, 2023Assignee: TouGas Oilfield Solutions GmbHInventors: Fatima Dugonjic-Bilic, Benjamin Gerlach, Jasmin Meurer, Marita Neuber
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Patent number: 11649709Abstract: Compositions and methods for fracturing a subterranean formation are presented. Also provided are compositions and methods for reducing friction-related losses in a well treatment fluid. In general, the compositions include a copolymer that includes one or more vinylphosphonic acid (“VPA”) monomers.Type: GrantFiled: March 18, 2021Date of Patent: May 16, 2023Assignee: ENERGY SOLUTIONS (US) LLCInventors: Subramanian Kesavan, Genyao Lin, Jian Zhou, Hoang Van Le, Changmin Jung, Qi Qu
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Patent number: 11612549Abstract: The present invention relates to a primer composition that may be applied to tissue in order to increase bond strength between the tissue and a patch, filler or a supporting material. The primer comprises a dithiol component and an allyl containing component together with a photo initiator.Type: GrantFiled: October 25, 2017Date of Patent: March 28, 2023Assignee: Biomedical Bonding ABInventors: Michael Malkoch, Viktor Granskog, Sandra Garcia Gallego, Mathieu Arseneault
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Patent number: 11598207Abstract: According to embodiments disclosed herein, a method of monitoring a gel fluid composite may include directing the gel fluid composite into a wellbore extending into a subsurface where the wellbore has one or more downhole fractures so that the gel fluid composite enters the one or more downhole fractures, transforming the gel fluid composite from an aqueous phase to a gel phase, irradiating light onto the gel fluid composite so that the fluorescent compounds emit one or more photons, and detecting the one or more photons using a detection device. The gel fluid composite may include a nanosilica gel that includes silica nanoparticles and an activator, wherein the silica nanoparticles have a maximum cross-sectional dimension of from 3 nm to 100 nm, and one or more fluorescent compounds, wherein the one or more fluorescent compounds are dispersed in the nanosilica gel, bonded to the silica nanoparticles, or both.Type: GrantFiled: December 22, 2021Date of Patent: March 7, 2023Assignee: Saudi Arabian Oil CompanyInventor: Wengang Li
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Patent number: 11118101Abstract: The present invention relates to an aqueous multiphase particulate suspension comprising a water-soluble polymer and to an enhanced oil recovery method using said suspension. The invention further relates to the use of the multiphase suspension in a drilling, hydraulic fracturing and mining effluent treatment operation.Type: GrantFiled: February 15, 2018Date of Patent: September 14, 2021Assignee: S.P.C.M. SAInventors: Cédrick Favero, Alexandre Omont
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Patent number: 11118100Abstract: The present disclosure provides polymeric systems that are able to undergo fast hydration and are useful for maintaining particle dispersions for extended periods of time.Type: GrantFiled: December 19, 2018Date of Patent: September 14, 2021Assignee: RHODIA OPERATIONSInventors: Changmin Jung, Lingjuan Shen, Christopher Smith, Hoang Van Le, Jian Zhou, Genyao Lin
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Patent number: 11091687Abstract: A method of treating a reservoir penetrated by at least one well involves placing a consolidated solids pack into a permeable zone of rock in the reservoir. The consolidated solids pack has a reduced permeability to water and a reduced mobility in the permeable zone. For example, when placed in the permeable zone in connection with a water flooding operation, the consolidated solids pack diverts the injectant from the permeable zone to other less permeable zones of the reservoir that contain oil.Type: GrantFiled: September 13, 2017Date of Patent: August 17, 2021Assignee: Halliburton Energy Services, Inc.Inventors: Philip D. Nguyen, John Davis, Julio E. Vasquez, Larry S. Eoff
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Patent number: 11060374Abstract: Methods for producing a swellable packer in a downhole environment are provided. A method includes introducing a treatment fluid containing a polymeric composition into a wellbore within the downhole environment and exposing the polymeric composition to an acid to produce a swollen polymeric material within the downhole environment. The polymeric composition contains a reaction product of at least one or more monomers, one or more comonomers, and one or more crosslinkers. The acid can be in situ formed from an acid precursor introduced into the downhole environment.Type: GrantFiled: February 20, 2018Date of Patent: July 13, 2021Assignee: Halliburton Energy Services, Inc.Inventors: Sunita Sameer Kadam, Vaishali Mishra, Rahul Chandrakant Patil, Mohamed A. Salam, Ravikant S. Belakshe, Siddharth Roy, Vilas Ramtenki
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Patent number: 10703962Abstract: Methods, compositions, and systems that use hydrogels of graft polymers for diversion of acidic treatment fluids in subterranean formations. A method for acid diversion may comprise: applying a first acidizing treatment to a first treatment zone of a subterranean formation; introducing a hydrogel to the first treatment zone, wherein the hydrogel comprises a graft polymer that is crosslinked; and applying a second acidizing treatment to the subterranean formation, wherein the hydrogel diverts the second acidizing treatment to a second treatment zone.Type: GrantFiled: December 21, 2015Date of Patent: July 7, 2020Assignee: Halliburton Energy Services, Inc.Inventors: Pratiksha Shivaji Meher, Ravikant S. Belakshe, Larry Steven Eoff
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Patent number: 10655041Abstract: Methods of treating a subterranean formation penetrated by a well bore, by providing a treatment fluid comprising non-homogeneous particulates including a degradable material and a stabilizer; by introducing the treatment fluid into the well bore; and by creating a plug with the treatment fluid.Type: GrantFiled: November 10, 2015Date of Patent: May 19, 2020Assignee: Schlumberger Technology CorporationInventors: Zinaida Yurievna Usova, Shitong S. Zhu, Bruno Lecerf
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Patent number: 10647908Abstract: Provided is a composition for preparing injection fluid in oil and gas recovery comprising an inverse emulsion of a water-soluble polymer A comprising acrylamide monomer units, and solid particles of a water-soluble polymer, wherein water-soluble polymer B is obtained by a polymerization step of at least acrylamide and 1 and 15 mol % of acrylamido tertiary butyl sulfonic acid (ATBS), and/or salts thereof, and a subsequent post treatment step of the resulting polymer. Also provided is a method of treating a portion of subterranean formation comprising providing the composition, preparing an injection fluid with at least the composition, introducing the injection fluid into portion of the subterranean formation. The composition is particularly useful to prepare fracturing fluid in fracturing operations.Type: GrantFiled: July 26, 2019Date of Patent: May 12, 2020Assignee: S.P.C.M. SAInventor: Cédrick Favero
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Patent number: 10640700Abstract: A fracturing fluid including a mixture of an aqueous copolymer composition including a copolymer, the copolymer having 2-acrylamido-2-methylpropanesulfonic acid, acrylamide, and acrylic acid monomer units, or a salt thereof, and a crosslinker. The crosslinker includes a metal, and the weight ratio of the metal to the copolymer is in a range of 0.01 to 0.08. Treating a subterranean formation includes introducing the fracturing fluid into a subterranean formation, and crosslinking the fracturing fluid in the subterranean formation to yield a crosslinked fracturing fluid. The crosslinked fracturing fluid has a viscosity of at least 500 cP for at least 80 minutes when the gel is subjected to a shear rate of 40 s?1 at a temperature in a range of 300° F. to 400° F.Type: GrantFiled: September 18, 2018Date of Patent: May 5, 2020Assignee: Saudi Arabian Oil CompanyInventors: Feng Liang, B. Raghava Reddy, Leiming Li, Ghaithan A. Al-Muntasheri
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Patent number: 10138418Abstract: A hydraulic fracturing composition includes: a superabsorbent polymer in an expanded state and configured to break in response to a breaking condition; a plurality of proppant particles disposed in the superabsorbent polymer prior to release of the plurality of proppant particles from the superabsorbent polymer in response to breaking the superabsorbent polymer; and a fluid to expand the superabsorbent polymer into the expanded state. The hydraulic fracturing composition can be made by contacting a superabsorbent polymer with a fluid to expand the superabsorbent polymer into an expanded state; and disposing a plurality of proppant particles in the superabsorbent polymer to make the hydraulic fracturing composition.Type: GrantFiled: October 5, 2017Date of Patent: November 27, 2018Assignee: BAKER HUGHES, A GE COMPANY, LLCInventors: Jia Zhou, Hong Sun, Qi Qu, Michael Guerin
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Patent number: 10131731Abstract: The subject invention discloses curable polymeric N-halamine precursors which are useful for forming an antimicrobial surface coating on an object or article of manufacture. The present invention more specifically reveals a cross-linkable, water soluble polymer which is particularly useful for coating substrates and which can be activated to provide such substrates with antimicrobial and/or odor reducing characteristics, said cross-linkable polymer being comprised of amine, amide, or imide group containing repeat units and epoxide or methylol group containing repeat units, wherein the ratio of amine, amide or imide group containing repeat units to epoxide or methylol group containing repeat units is at least 2:1.Type: GrantFiled: May 5, 2015Date of Patent: November 20, 2018Assignee: OxiScience LLCInventors: Zhengbing Cao, Xinbo Sun, Simon Johnston
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Patent number: 9969923Abstract: Embodiments herein include methods comprising providing a sealant composition comprising an aqueous base fluid, a crosslinkable polymer composition, and a density segregation prevention agent, wherein the crosslinkable polymer composition comprises a crosslinkable organic polymer and a crosslinker; introducing a particulate density reducing agent into the sealant composition, wherein the particulate density reducing agent causes the sealant composition to adopt a reduced density as compared to the sealant composition without the particulate density reducing agent, thereby creating a reduced density sealant composition; introducing the reduced density sealant composition into a subterranean formation; and crosslinking the reduced density sealant composition into a gel to form a seal in the subterranean formation.Type: GrantFiled: October 30, 2013Date of Patent: May 15, 2018Assignee: Halliburton Energy Services, Inc.Inventors: B. Raghava Reddy, Larry S. Eoff, Christopher A. Lewis, Robert Maier
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Patent number: 9469805Abstract: Composition based on anionic polymers or water-soluble amphoteric (co)polymers suitable for viscosifying the injection fluids for oil recovery, characterized in that, before dilution with the injection fluid, it further contains at least 3 stabilizing agents selected from the group comprising oxygen reducing agents, precipitating agents, free radical scavengers, complexing agents and sacrificial agents, the said stabilizing agent being suitable for preventing the chemical degradation of the polymer once the polymer is introduced into the injection fluid.Type: GrantFiled: June 12, 2009Date of Patent: October 18, 2016Assignee: S.P.C.M. SAInventors: Cédrick Favero, Nicolas Gaillard, Bruno Giovannetti
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Patent number: 9175207Abstract: Compositions and methods for oil recovery using a surfactant-less alkaline-polymer system in hard water or hard brine is described in the instant invention. The formulation further includes a chelating agent, an alkaline agent (which can be the same as the chelating agent), and a co-solvent. The formulations as disclosed herein are capable of forming a surfactant in-situ resulting in Winsor Type III micro-emulsions of low interfacial tension.Type: GrantFiled: May 25, 2011Date of Patent: November 3, 2015Assignee: Board of Regents, The University of Texas SystemInventors: Upali P. Weerasooriya, Gary A. Pope
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Patent number: 9090856Abstract: The primary washing power of washing and cleaning agents was to be improved, in particular with respect to oil- and/or fat-containing stains. This was achieved substantially by the incorporation of polymers that derive from N,N-dimethylacrylamide.Type: GrantFiled: March 6, 2014Date of Patent: July 28, 2015Assignees: Henkel AG & Co. KGaA, Fraunhofer Gesellschaft zur Forderung der angewandten Forschung e.V.Inventors: Nicole Plath, Inga Kerstin Vockenroth, Eva-Maria Wikker, Benoit Luneau, Andre Laschewsky, Michael Pach, Erik Wischerhoff
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Publication number: 20150148269Abstract: Design and preparation of a smart system, including a hydrophilic polymer nanoparticle as a core material and a hydrophilic-hydrophobic block copolymer as a coating nanolayer for use in a smart core-shell nanostructure flooding during enhanced oil recovery (EOR) process. The hydrophilic polymers are prepared by an inverse emulsion method. The central core of this nanostructure includes hydrophilic polymer. The nanolayer can be a surfmer. The binary properties of the shell and hydrophilic polymers increase the water viscosity in the water-oil interface and enhance oil recovery.Type: ApplicationFiled: September 23, 2014Publication date: May 28, 2015Inventors: Yousef Tamsilian, Ahmad Ramazani S.A.
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Publication number: 20150141301Abstract: Aqueous well treatment fluid compositions with biocidal activity are disclosed comprising a polymer for modifying fluid viscosity in the aqueous fluid, an organic monocarboxylic peracid being present in an anti-microbial amount of about 1 ppm to about 1000 ppm, and a controlled amount of hydrogen peroxide also being present. Peracetic acid is the preferred peracid. The viscosity-modifying polymer in the aqueous well treatment fluid composition may serve to reduce friction in the fluid or increase fluid viscosity. A method of using such compositions is also disclosed.Type: ApplicationFiled: January 23, 2015Publication date: May 21, 2015Applicant: PEROXYCHEM LLCInventors: John M. ROVISON, JR., Shurong HUANG, Henry A. PFEFFER
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Patent number: 9034804Abstract: Fluid treatment systems and compositions are provided including (a) at least one material including (1) at least one carboxylic acid functional group and (2) at least one sulfur-containing group selected from the group consisting of sulfonyl functional groups, sulfonate functional groups and mixtures thereof; and (b) at least one friction reducing agent selected from the group consisting of guar gums, polyacrylamides, hydratable cellulosic materials, viscoelastic surfactants, and mixtures thereof. The fluid treatment systems and compositions can be used to treat aqueous systems, for example as fracturing fluids for use in fracturing subterranean formations. Methods for inhibiting formation and/or precipitation of metal oxides in an aqueous composition using the fluid treatment systems or compositions also are provided.Type: GrantFiled: June 4, 2010Date of Patent: May 19, 2015Assignees: KROFF CHEMICAL COMPANY, NABORS COMPLETION & PRODUCTION SERVICES CO.Inventors: Paul Rey, Susan Rey, Michael John Seyman, Matthew E. Blauch
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Patent number: 9034805Abstract: Fluid treatment systems and compositions are provided including (a) at least one material including (1) at least one carboxylic acid functional group and (2) at least one sulfur-containing group selected from the group consisting of sulfonyl functional groups, sulfonate functional groups and mixtures thereof; and (b) at least one scale control agent. The fluid treatment systems and compositions can be used to treat aqueous systems, for example as fracturing fluids for treating aqueous compositions found in subterranean formations. Methods for inhibiting formation and/or precipitation of calcium salts in an aqueous composition using the fluid treatment systems or compositions also are provided.Type: GrantFiled: June 4, 2010Date of Patent: May 19, 2015Assignees: KROFF CHEMICAL COMPANY, NABORS COMPLETION & PRODUCTION SERVICES CO.Inventors: Paul Rey, Susan Rey, Michael John Seyman, David Grottenthaler, Matthew E. Blauch
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Patent number: 9034802Abstract: The invention provides an oilfield suspending friction reducer treatment composition fluid comprising from about 0.001 weight percent to about 0.5 weight percent of a drag reducing surfactant; at least one drag reducing enhancer selected from the group consisting of polymeric drag reduction enhancers, monomeric drag reduction enhancers, and mixtures thereof.Type: GrantFiled: August 3, 2007Date of Patent: May 19, 2015Assignee: Schlumberger Technology CorporationInventors: Alex Ahrenst, Bernhard Lungwitz, Christopher N. Fredd, Carlos Abad, Nihat Gurmen, Yiyan Chen, John Lassek, Paul Howard, William Troy Huey, Zakir Azmi, Donald Hodgson, III, Oscar Bustos
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Publication number: 20150129216Abstract: A method of plugging an opening in a subterranean formation such as a fracture system is provided. A gel composition can be provided which includes an aqueous fluid, a cross-linkable polymer soluble in the aqueous fluid and a cross-linking agent. Inorganic fibers can be added to the gel composition. The gel composition can be injected into the opening in the subterranean formation. The gel composition can be cross-linked, and the opening can be plugged with the gel composition. In certain illustrative embodiments, the inorganic fibers can be mineral wool fibers.Type: ApplicationFiled: November 7, 2014Publication date: May 14, 2015Applicant: BAKER HUGHES INCORPORATEDInventors: SUMIT BHADURI, TERRY MONROE, QI QU, FREEMAN HILL
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Publication number: 20150114649Abstract: Methods comprising providing a sealant composition comprising an aqueous base fluid and a crosslinkable polymer composition, wherein the crosslinkable polymer composition comprises a crosslinkable organic polymer and a crosslinker; introducing an elastic gellable composition into the sealant composition, wherein the elastic gellable composition is an aqueous emulsion comprising an aqueous continuous phase and a dispersed phase comprising elastomeric polymers; introducing the sealant composition into a subterranean formation; and crosslinking the sealant composition into a gel to form a seal in the subterranean formation, thereby forming an elastic gelled sealant composition, wherein the elastic gellable composition reduces the brittleness of the elastic gelled sealant composition as compared to the sealant composition without the elastic gellable composition.Type: ApplicationFiled: October 29, 2014Publication date: April 30, 2015Applicant: Halliburton Energy Sevices, Inc.Inventors: Jose del Carmen Jimenez Osorio, Omar Davila Escamilla, Jonnathan Ricardo Tellez Abaunza, Carmen Josefina Ramirez
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Patent number: 9018143Abstract: A method for breaking the viscosity of an aqueous fluid gelled with a water soluble polymer or a VES is disclosed. The method includes providing an aqueous fluid. The method also includes adding to the aqueous fluid, in any order: a water soluble polymer in an amount sufficient to form a gelled aqueous fluid having a viscosity, a water soluble oxidizing agent configured to generate free radicals and a plurality of metallic particles to produce a mixture comprising dispersed metallic particles dispersed within the gelled aqueous fluid, the metallic particles configured to dissolve in the gelled aqueous fluid and provide a reducing agent to accelerate the generation of free radicals. The method further includes dissolving the metallic particles in the gelled aqueous fluid to provide a source of at least one transition metal ion in an amount effective accelerate the generation of free radicals and reduce the viscosity.Type: GrantFiled: November 18, 2011Date of Patent: April 28, 2015Assignee: Baker Hughes IncorporatedInventor: James B. Crews
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Publication number: 20150096751Abstract: A hydraulic fracturing composition includes: a superabsorbent polymer in an expanded state; a plurality of proppant particles disposed in the superabsorbent polymer; a well treatment agent, and a fluid to expand the superabsorbent polymer into the expanded state. A process for treating a well with well treatment agent includes disposing a hydraulic fracturing composition comprising the well treatment agent in a well. The well treatment agent can be a scale inhibitor, tracer, pH buffering agent, or a combination thereof.Type: ApplicationFiled: December 15, 2014Publication date: April 9, 2015Applicant: BAKER HUGHES INCORPORATEDInventors: Dong Shen, Leiming Li, Jia Zhou, Hong Sun
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Patent number: 8993491Abstract: Compositions that swell on contact with water contain a non-swellable thermoplastic or thermoset polymer and a swellable inorganic compound. In particular, the compositions are suitable for use in subterranean wells such as those used in the oil and gas industry. The polymer may be polypropylene and the inorganic compound may be magnesium oxide.Type: GrantFiled: April 23, 2009Date of Patent: March 31, 2015Assignee: Schlumberger Technology CorporationInventors: Simon James, Bruno Drochon
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Publication number: 20150075795Abstract: A well treatment fluid uses ingredients that include an aqueous base, a non-associative, ionic, synthetic polymer, and optionally, at least one metal crosslinker. The polymer contains a backbone and a functional group that hinders hydrolysis of the backbone. The functional group is distributed at intervals on the backbone. A well treatment method includes forming a well treatment fluid by combining ingredients including a non-associative, ionic, synthetic polymer and a first aqueous base. The first fluid exhibits a first viscosity greater than a viscosity of the first aqueous base. The method includes treating a well during a stage using the first fluid exhibiting the first viscosity. A second well treatment fluid is formed by combining ingredients including the polymer, a second aqueous base, and at least one crosslinker and by crosslinking the synthetic polymer. The method includes treating the well during another stage using the second fluid exhibiting the second viscosity.Type: ApplicationFiled: September 17, 2013Publication date: March 19, 2015Applicant: BAKER HUGHES INCORPORATEDInventor: Richard S. Wheeler
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Publication number: 20150075798Abstract: Compositions and dispersions comprising hydrophobically modified polyacrylamide (HMPAM) or associative polymers and small particles useful in hydrocarbon recovery and enhanced oil recovery processes using the same. Non-limiting embodiments include those using metal oxide small particles, including fumed silica having primary particles in the nanoparticle size range.Type: ApplicationFiled: September 16, 2014Publication date: March 19, 2015Inventors: Yongchun TANG, Hongxin TANG, Panqing HE
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Patent number: 8975217Abstract: Methods are provided for treating a portion of a well. The method according to this aspect comprises the steps of: (A) forming a treatment fluid, the treatment fluid comprising: (i) water; (ii) a water-soluble polymer; (iii) a complexed metal cation that: (a) has a valence state of at least three; and (b) is capable of cross-linking the water-soluble polymer; and (iv) an aromatic compound that is capable of dissolving, melting, or chemically decomposing, dissociating, or reacting, to form a chelating agent, wherein the chelating agent comprising vicinal substituents containing donor heteroatoms, and wherein the chelating agent is capable of chelating the metal cation; and (B) introducing the treatment fluid into the well.Type: GrantFiled: June 23, 2009Date of Patent: March 10, 2015Assignee: Halliburton Energy Services, Inc.Inventors: B. Raghava Reddy, Rajesh K. Saini, Sherry G. Gaskins
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Publication number: 20150065672Abstract: Amphiphilic macromolecules having repeating structural units: structural units to adjust molecular weight and molecular weight distribution and charging property effects, high stereo-hindrance structural units, and amphiphilic structural units, and are suitable for fields such as oil field well drilling, well cementation, fracturing, oil gathering and transfer, sewage treatment, sludge treatment and papermaking, etc., and can be used as an oil-displacing agent for enhanced oil production, a heavy oil viscosity reducer, a fracturing fluid, a clay stabilizing agent, a sewage treatment agent, a papermaking retention and drainage aid or a reinforcing agent, etc.Type: ApplicationFiled: September 16, 2011Publication date: March 5, 2015Applicant: BEIJING JUNLUN RUNZHONG SCIENCE & TECHNOLOGY CO., LIMITEDInventors: Jinben Wang, Xuefeng Shi, Xiaohui Xu, Hui Yang, Yilin Wang, Haike Yan
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Patent number: 8969261Abstract: A composition for enhancing fluid viscosity including a mixture of at least one cationic or cationizable polymer and at least one anionic or anionizable (hydrolysable) polymer. The composition has a zeta potential at 25° C. in the range of 0.5 to 100 mV or ?0.5 to ?100 mV, typically 1 to 60 mV or ?1 to ?60 mV, or is a precursor convertible at a temperature of 100 to 250° C. to the composition having a zeta potential at 25° C. of 0.5 to 100 mV or ?0.5 to ?100 mV, typically 1 to 60 mV or ?1 to ?60 mV. Typically the compositions exhibit salt tolerance and interaction of both polymers at very high temperatures (>300° F.) such that the system exhibits an increase of viscosity at extreme temperatures. The compositions are useful for hydraulic fracturing, enhanced oil recovery, subterranean acidization, personal care as well as home and industrial cleaners.Type: GrantFiled: February 14, 2011Date of Patent: March 3, 2015Assignee: Rhodia OperationsInventors: Ruela Talingting Pabalan, Nemesio Martinez-Castro, Subramanian Kesavan, Marie Pierre Labeau, Bruno Langlois
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Publication number: 20150057196Abstract: Charged nanoparticles may be added to an aqueous downhole fluid having polymers therein where the charged nanoparticles may crosslink at least a portion of the polymers. The polymers may be or include, but are not limited to polyacrylamide, xanthan, guar, polyacrylic acid, poly 2-acrylamido-2-methyl-1-propane sulfonic acid (AMPS), polyethylene oxide, polypropylene oxide, or combinations thereof. The polymers may be homopolymers, copolymers, terpolymers, or combinations thereof. The charged nanoparticles may be or include, but are not limited to clay nanoparticles, modified nanoparticles, or combinations thereof. The aqueous downhole fluid may be or include, but is not limited to fracturing fluids, injection fluids, and combinations thereof for performing a fracturing operation, an injection operation, another enhanced oil recovery operation, and the like.Type: ApplicationFiled: August 20, 2014Publication date: February 26, 2015Applicant: BAKER HUGHES INCORPORATEDInventors: Saet B. Debord, Christabel Tanifum
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Publication number: 20150057195Abstract: Improved hydraulic fracturing compositions are disclosed which help reduce potential negative environmental impact by hydraulic fracturing. The disclosed compositions have flammability and toxicity and are relatively safe for the environment. The compositions may also contain biodegradable components.Type: ApplicationFiled: November 4, 2014Publication date: February 26, 2015Inventor: Courtney Gene Rogers
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Patent number: 8962536Abstract: The instant invention pertains to a composition which may be useful for enhancing oil recovery. The composition typically comprises the reaction mixture of at least (a) two or more compounds capable of generating at least about 20 kcal to about 150 kcal per mole when contacted; (b) one or more suitable surfactants or one or more suitable polymers or a mixture thereof; and (c) oil. The invention also pertains to a method for enhancing oil recovery wherein a suitable system is injected through a wellbore into a reservoir to enhance mobility of oil.Type: GrantFiled: December 17, 2010Date of Patent: February 24, 2015Assignee: Chevron U.S.A. Inc.Inventors: Gregory Winslow, Gabriel Prukop, Varadarajan Dwarakanath
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Publication number: 20150034315Abstract: A method includes providing an oilfield treatment fluid including an aqueous HCl solution having greater than 15% HCl by weight, and a fixing agent (FA) in a molar ratio of FA:HCl of between 0.5 and 2.5 inclusive. The FA is urea and/or a urea derivative. The oilfield treatment fluid further includes a viscosifying agent that is not a plant-based polysaccharide gum. The method further includes providing the oilfield treatment fluid to a high pressure pump, and operating the high pressure pump to treat a formation fluidly coupled to a wellbore.Type: ApplicationFiled: July 31, 2013Publication date: February 5, 2015Applicant: Schlumberger Technology CorporationInventors: Li Jiang, Bruno Lecerf, Murtaza Ziauddin, Jian He, Boingoc Dang
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Patent number: 8946132Abstract: A controlled release composition comprising an aqueous sulfonate solution; an anionic surfactant; and a salt selected from aluminum nitrate nanohydrate, calcium chloride dehydrate, magnesium chloride hexahydrate, cobalt chloride hexahydrate, and other metal salts. Methods of delivering a controlled release of surfactants composition, the method comprising the steps of: delivering a solution into a reservoir, the solution comprising an aqueous sulfonate solution; an anionic surfactant; and a salt selected from aluminum nitrate nanohydrate, calcium chloride dehydrate, magnesium chloride hexahydrate, cobalt chloride hexahydrate, and other metal salts; and delivering water to the reservoir.Type: GrantFiled: July 18, 2011Date of Patent: February 3, 2015Assignee: Saudi Arabian Oil CompanyInventors: Yun Chea Chang, Mazen Kanj
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Patent number: 8940667Abstract: Fluid treatment systems and compositions are provided including (a) at least one material including (1) at least one carboxylic acid functional group and (2) at least one sulfur-containing group selected from the group consisting of sulfonyl functional groups, sulfonate functional groups and mixtures thereof; (b) at least one friction reducing agent selected from the group consisting of guar gums, polyacrylamides, hydratable cellulosic materials, viscoelastic surfactants, and mixtures thereof; and (c) at least one scale control agent. The fluid treatment systems and compositions can be used to treat aqueous systems, for example as fracturing fluids for treating aqueous compositions found in subterranean formations. Methods for inhibiting formation and/or precipitation of metal oxides in an aqueous composition using the fluid treatment systems or compositions also are provided.Type: GrantFiled: June 4, 2010Date of Patent: January 27, 2015Assignees: Kroff Chemical Company, Nabors Completion & Production Services Co.Inventors: Paul Rey, Susan Rey, Michael John Seyman, Matthew E. Blauch
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Patent number: 8940670Abstract: Methods and compositions that comprise sub-micron alumina for accelerating setting of a cement composition. An embodiment includes a method of cementing in a subterranean formation. The method may comprise introducing a cement composition into the subterranean formation, wherein the cement composition comprises hydraulic cement, sub-micron alumina, and water. The method further may comprise allowing the cement composition to set in the subterranean formation. Another embodiment includes a cement composition that may comprise hydraulic cement, sub-micron alumina, and water.Type: GrantFiled: March 30, 2012Date of Patent: January 27, 2015Assignee: Halliburton Energy Services, Inc.Inventors: Rahul Chandrakant Patil, B. Raghava Reddy, Abhimanyu Deshpande, Christopher L. Gordon, Craig W. Roddy, Jiten Chatterji, Roger S. Cromwell
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Publication number: 20150007989Abstract: Viscoselastic surfactant systems including at least one viscoelastic surfactant and at least one divalent metal compound, where the systems are useable for enhancing oil production in oil wells that coproduce high volumes of gas and/or water and for enhancing gas injection uniformity into injection formations and methods including treating producing or injecting formations with the systems to enhance oil production in treated producing zones or enhance injection efficiency in injection zones.Type: ApplicationFiled: July 2, 2014Publication date: January 8, 2015Inventors: Hyok Chong Tan, Billy J. Gray