Including Cross-linking Agent (epo) Patents (Class 166/308.5)
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Patent number: 12065920Abstract: A method of non-mechanically remediating damage to a wellbore comprising a plurality of fracture stages is disclosed. A total treatment volume is calculated based on the plurality of fracture stages, the wellbore space, and either the production tubing or the annulus of the wellbore. The fracture stages of the wellbore are then divided into a plurality of chemical stages. The wellbore is pre-flushed, and each chemical stage is treated and isolated in order of depth by a volume of remediation chemicals and a volume of diverter. A post-treatment flush completes the remediation process and after a shut-in period, the well's production is substantially improved.Type: GrantFiled: October 7, 2021Date of Patent: August 20, 2024Assignee: Kairos Energy Services Inc.Inventors: Deepak Patil, Ambrish Kamdar, Michael C. Lantz
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Patent number: 11866639Abstract: Well treatment fluids may include solid particles comprising one or more components selected from the group consisting of urea, ammonium nitrate, ammonium chloride, barium hydroxide, and ammonium thiocyanate. These well treatment fluids may also include a carrier fluid, which may be an aqueous polymeric fluid, an oil, or combinations thereof. The aqueous polymeric fluid may include a polymer selected from the group consisting of guar gum, hydroxypropyl guar, carboxymethyl hydroxypropyl guar, cellulose, or polyacrylamide. The oil may include a material selected from the group consisting of diesel, mineral oil, and wax. Methods for reducing an acid carbonate reaction in a carbonate formation may include pumping a composition of solid particles into a formation; releasing the solid particles from the capsules or emulsion within the formation; and injecting an acid following the releasing step or during pumping, wherein the acid carbonate reaction is carried out at a reduced reaction rate.Type: GrantFiled: April 26, 2022Date of Patent: January 9, 2024Assignee: SAUDI ARABIAN OIL COMPANYInventors: Fakuen Frank Chang, Wenwen Li
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Patent number: 11827846Abstract: Proppant embedment can sometimes be problematic during fracturing operations. A partially oxidized, amine-functionalized polysaccharide comprising a plurality of oxidatively opened monosaccharide units and bearing an amine moiety at one or more sites of oxidative opening may lessen the amount of proppant embedment that occurs. Fracturing methods may comprise providing a fracturing fluid comprising such a partially oxidized, amine-functionalized polysaccharide and a plurality of proppant particulates, introducing the fracturing fluid into a subterranean formation at a hydraulic pressure sufficient to create or extend one or more fractures therein, such that at least a portion of the plurality of proppant particulates become localized in the one or more fractures, and releasing the hydraulic pressure. Upon releasing the hydraulic pressure, embedment of the proppant particulates in a face of the one or more fractures is about 10% to about 40% of a grain size of the proppant particulates.Type: GrantFiled: June 9, 2020Date of Patent: November 28, 2023Assignee: INTEGRITY BIO-CHEMICALS, LLCInventors: Charles R. Landis, Stephen William Almond
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Patent number: 11795369Abstract: A wellbore fluid includes a base fluid; and a crosslinked and branched polymeric fluid loss control agent formed from at least an acrylamide monomer and a sulfonated anionic monomer; wherein the fluid loss control agent has an extent of crosslinking that is selected so that the fluid loss control agent has a viscosity that is within a peak viscosity response of the viscosity response curve.Type: GrantFiled: April 5, 2021Date of Patent: October 24, 2023Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventor: Balakrishnan Panamarathupalayam
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Patent number: 11746282Abstract: Friction reducers, fracturing fluid compositions and methods for treating subterranean formations, wherein friction reducer is a reacted, grafted or blend of natural gum and polyacrylamide having a molecular weight between 300,000 and 30,000,000.Type: GrantFiled: March 15, 2022Date of Patent: September 5, 2023Assignee: Sunita Hydrocolloids Inc.Inventors: Farhan Siddiqui, Mohit Hissaria, Danny Fred Wilson, P K Hissaria
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Patent number: 11365138Abstract: The present embodiments generally relate to the treatment of produced water comprising one or more water soluble polymers, wherein such treatment comprises: adding to the produced water at least one iron complex; and degrading at least a portion of the one or more water soluble polymers. This treatment may result in a reduction of the viscosity of said produced water and/or the degradation of the water soluble polymers which are contained therein.Type: GrantFiled: March 6, 2018Date of Patent: June 21, 2022Assignee: KEMIRA OYJInventors: Iris Porat, Miguel Pelaez, Mehrdad Hesampour, Yuping Luo, William Morris, Luciana Bava
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Patent number: 11292959Abstract: Disclosed herein are compositions and methods for delaying crosslinking of aqueous crosslinkable polymers such as polysaccharides in injectable compositions for hydraulic fracturing and related applications. The compositions and methods provide delayed crosslinking at high temperatures and pressures, such as those encountered by hydraulic fracturing compositions injected into subterranean environments. Compositions include injectable solutions comprising a competing agent that is a reaction product of a dialdehyde having 2 to 4 carbon atoms with a non-polymeric cis-hydroxyl compound. Provided are methods of making and using delayed-crosslinking compositions comprising crosslinker compositions containing zirconium complexes and the competing agents.Type: GrantFiled: January 10, 2020Date of Patent: April 5, 2022Assignee: ChampionX USA Inc.Inventors: Christopher Waller, Kirk E. Wells, Trinh Tran, Pablo Munoz
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Patent number: 11274243Abstract: Friction reducers, fracturing fluid compositions and methods for treating subterranean formations, wherein friction reducer is a reacted, grafted or blend of natural gum and polyacrylamide having a molecular weight between 300,000 and 30,000,000.Type: GrantFiled: March 13, 2020Date of Patent: March 15, 2022Assignee: Sunita Hydrocolloids Inc.Inventors: Farhan Siddiqui, Mohit Hissaria, Danny Fred Wilson, Pk Hissaria
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Patent number: 11268009Abstract: Described herein are compositions useful for controlling fluid flow, for example in a target zone of a subterranean environment, and methods of forming and using the same. The composition generally comprises a quantity of fibers and a quantity of swellable particles, which may be dispersed in a carrier fluid. The composition may be synthesized in the form of a bulk gel or may be gelatinated during use. The fibers in the compositions provide improved performance as compared to prior PPG and RPPG particle-containing compositions. Specifically, the compositions reinforce the re-cross-linked/re-associated hydrogel plug in underground features and support proper rehydration of RPPG particles with water or brine to better to provide structural support for the particles within the gel and to more completely fill underground void space conduits.Type: GrantFiled: September 8, 2020Date of Patent: March 8, 2022Assignee: THE CURATORS OF THE UNIVERSITY OF MISSOURIInventors: Baojun Bai, Ze Wang, Zhe Sun, Jingyang Pu, Thomas Schuman
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Patent number: 11220623Abstract: A flow constraint material consists essentially of degradable particles, where at least 50% by volume of the degradable particles have an average particle size of about 1 millimeters (mm) to about 6 mm.Type: GrantFiled: June 6, 2016Date of Patent: January 11, 2022Assignee: Halliburton Energy Services, Inc.Inventors: Geoffrey Wedell Gullickson, William Owen Alexander Ruhle, John Dean Stabenau
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Patent number: 11214729Abstract: The present invention generally relates to the composition of particle gels for CO2-EOR and CO2 storage. More particularly, CO2 resistant particle gels are provided that can re-crosslink at subterranean conditions. These particle gels can be deployed to improve the conformance of CO2 flooding, CO2 huff-puff, or Water-Alternative-Gas (WAG). The applications may also involve CO2 storage, such as the blocking of CO2 leakage and similar CO2 processing.Type: GrantFiled: August 27, 2019Date of Patent: January 4, 2022Assignee: The Curators of the University of MissouriInventors: Yifu Long, Baojun Bai, Thomas P. Schuman
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Patent number: 11111429Abstract: Disclosed herein are compositions and methods for delaying crosslinking in injectable compositions for hydraulic fracturing and related applications. The compositions and methods are effective in injectable compositions comprising or substantially excluding dissolved reactive species. The compositions and methods provide delayed crosslinking at high temperatures and pressures, such as those encountered by hydraulic fracturing compositions injected into subterranean environments. Compositions include injectable solutions comprising a competing agent that is the reaction product of a dialdehyde having 2 to 4 carbon atoms with a non-polymeric cis-hydroxyl compound. Also provided are methods of making and using delayed-crosslinking compositions comprising crosslinker compositions containing zirconium complexes and the competing agents.Type: GrantFiled: August 29, 2019Date of Patent: September 7, 2021Assignee: ChampionX USA Inc.Inventors: Christopher Waller, Kirk E. Wells, Brian Mueller, Trinh Tran, Pablo Munoz
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Patent number: 11041112Abstract: Compositions and methods of using such compositions to, for example, reduce the viscosity of treatment fluids are provided. In one embodiment, the methods include: providing a treatment fluid including a base fluid, a viscosifier, and a breaker system including a gel stabilizer; a delayed release oxidative breaker; and a delayed release enzyme breaker; and allowing the breaker system to reduce a viscosity of the treatment fluid.Type: GrantFiled: February 17, 2020Date of Patent: June 22, 2021Assignee: Halliburton Energy Services, Inc.Inventors: Robert Stewart Taylor, Glen C. Fyten, Michael Wayne Sanders
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Patent number: 10982132Abstract: Method of fracturing a subterranean formation by injecting an aqueous fracturing fluid comprising an aqueous base fluid, a polysaccharide and/or polysaccharide derivative, a crosslinker, which is a water-soluble, layered silicate and a proppant. Aqueous fracturing fluid comprising an aqueous base fluid, a polysaccharide and/or polysaccharide derivative, a crosslinker, which is a water-soluble, layered silicate and a proppant and to the use of water-soluble, layered silicates as crosslinker for aqueous fracturing fluids comprising polysaccharides and/or polysaccharide derivatives.Type: GrantFiled: June 14, 2017Date of Patent: April 20, 2021Assignee: BASF SEInventors: Edward Bohres, Radoslaw Kierat, Stephan Schunk, Carlos Lizandara Pueyo, Sven Titlbach, Robert Mueller, Michael Ludwig Lejkowski
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Patent number: 10975331Abstract: Alkaline or neutral viscoelastic cleaning compositions are disclosed which use non polymer thickening agents. According to the invention, cleaning compositions have been developed using viscoelastic surfactants in a neutral, acidic or alkaline cleaning formulations. These provide the dual benefit of thickening as well as an additional cleaning, thereby improving performance. Applicants have also identified several pseudo linking agents which when, used with viscoelastic surfactants provide viscoelasticity in alkaline cleaning compositions.Type: GrantFiled: February 11, 2019Date of Patent: April 13, 2021Assignee: Ecolab USA Inc.Inventors: Victor Fuk-Pong Man, Michael Charles Denoma, Yvonne Marie Killeen, Susan Maloney Viall
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Patent number: 10914134Abstract: Embodiments of the disclosure provide a system and method for treating a casing-casing annulus of a wellbore using a sealant material. The sealant material is heated to a first temperature, equal to or greater than the melting point of the sealant material such that the sealant material is in its molten state. The casing-casing annulus is heated to a second temperature, equal to or greater than the melting point of the sealant material. The sealant material in its molten state is pressurized and injected into the casing-casing annulus such that the sealant material in its molten state occupies pore or imperfections of a cemented zone located in the casing-casing annulus. The sealant material is allowed to solidify such that formation fluids are prevented from migrating to the surface of the wellbore.Type: GrantFiled: November 14, 2019Date of Patent: February 9, 2021Inventor: Atallah N. Harbi
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Patent number: 10883041Abstract: A method of making a proppant-gel matrix comprising: a) hydrating a gelling agent to form a hydrated gelling agent; b) adding a basic compound to the hydrated gelling agent to form a basic hydrated gelling agent having a pH in the range of 11.5 to 14.0; c) mixing the basic hydrated gelling agent and a proppant to form a basic hydrated gelling system; and d) adding a crosslinking agent to the basic hydrated gelling system to form the proppant-gel matrix, is disclosed. The proppant-gel matrix can then be used as a fracturing fluid in a hydraulic fracturing process.Type: GrantFiled: June 2, 2017Date of Patent: January 5, 2021Assignee: HEXION INC.Inventors: Charles Zha, Jan Beetge
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Patent number: 10844278Abstract: The present invention relates to a composition for dissolving an oil-based filter cake in a wellbore, and a single-step method of use. The composition comprises a chelating agent, a converting agent, a polymer removal agent, a mutual solvent, and a surfactant. The present invention also relates to a multi-step method of dissolving an oil-based filter cake using similar components. Both single-step and multistep methods may be used to dissolve oil-based filter cakes comprising barite as a weighting material.Type: GrantFiled: July 14, 2017Date of Patent: November 24, 2020Assignee: King Fahd University of Petroleum and MineralsInventors: Mohamed Mahmoud, Salah El-Din Elkatatny
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Patent number: 10550315Abstract: Disclosed herein are compositions and methods for delaying crosslinking of aqueous crosslinkable polymers such as polysaccharides in injectable compositions for hydraulic fracturing and related applications. The compositions and methods provide delayed crosslinking at high temperatures and pressures, such as those encountered by hydraulic fracturing compositions injected into subterranean environments. Compositions include injectable solutions comprising a competing agent that is a reaction product of a dialdehyde having 2 to 4 carbon atoms with a non-polymeric cis-hydroxyl compound. Provided are methods of making and using delayed-crosslinking compositions comprising crosslinker compositions containing zirconium complexes and the competing agents.Type: GrantFiled: July 13, 2017Date of Patent: February 4, 2020Assignee: Ecolab USA Inc.Inventors: Christopher Waller, Kirk E. Wells, Trinh Tran, Pablo Munoz
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Patent number: 10450501Abstract: The method for well-stimulation through a wellbore in a rock formation is hydraulic fracturing under high temperature conditions. The method includes injecting a fracturing fluid system to the rock formation; fracturing the rock formation at a temperature between 150-260 degrees Celsius; and recovering fluid components of the fracturing fluid system from the wellbore and setting the proppant in the fractures. The fracturing fluid system includes proppant and a plurality of fluid components. The fluid components can include water, a gelling agent, and a stabilizer made of ascorbic acid ranging from 50-100 ppt so as to adjust pH and delay said cross linking agent.Type: GrantFiled: August 23, 2018Date of Patent: October 22, 2019Assignee: CNPC USA CorporationInventors: Lulu Song, Zhenzhou Yang
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Patent number: 10450502Abstract: A method of acidizing a subterranean geological formation by injecting an emulsified acid into a wellbore, wherein the emulsified acid includes at least an aqueous phase comprising a hydrochloric acid solution, an oil phase comprising waste oil, and an emulsifier, and wherein the waste oil contains 45-75% by weight of aromatic compounds and preferably contains less than 0.5% by weight of non-hydrocarbon compounds. Various embodiments, and combinations of embodiments, of the emulsified acid and the method of acidizing are provided.Type: GrantFiled: March 1, 2018Date of Patent: October 22, 2019Assignee: King Fahd University of Petroleum and MineralsInventors: Abdullah S. Sultan, Ziad Sidaoui
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Patent number: 10266748Abstract: A subterranean formation sealant includes a mixture of an aqueous colloidal dispersion including silica nanoparticles and a C6-C12 fatty acid. Heating the sealant above 70° C. initiates gelation of the sealant. Sealing an opening in a water or gas producing zone in a subterranean formation includes providing a sealant including a mixture of a colloidal dispersion including silica nanoparticles and a C6-C12 fatty acid to the water or gas producing zone, initiating gelation of the sealant in situ, and solidifying the sealant in the water or gas producing zone to yield a set gel, thereby sealing the opening in the water or gas producing zone.Type: GrantFiled: July 19, 2018Date of Patent: April 23, 2019Assignee: Saudi Arabian Oil CompanyInventors: Rajendra Arunkumar Kalgaonkar, Vikrant Bhavanishankar Wagle, Jin Huang, Abdullah Saleh Hussain Al-Yami
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Patent number: 10253248Abstract: Treating fluid compositions for use in hydrocarbon recovery operations from subterranean formations are described, as well as methods for their preparation and use. In particular, treating fluid compositions are described which comprise a liquid, a crosslinkable organic polymer material that is at least partially soluble in the liquid, a crosslinking agent that is capable of increasing the viscosity of the treating fluid by crosslinking the organic polymer material in the liquid, and a crosslinking modifier additive which can delay or accelerate the crosslinking of the treating fluid composition. Such compositions may be used in a variety of hydrocarbon recovery operations including fracturing operations, drilling operations, gravel packing operations, water control operations, and the like.Type: GrantFiled: September 29, 2015Date of Patent: April 9, 2019Assignee: TUCC Technology, LLCInventors: James W. Dobson, Jr., Shauna L. Hayden, Kimberly A. Pierce Dobson
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Patent number: 10144866Abstract: 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: December 1, 2016Date of Patent: December 4, 2018Assignee: Saudi Arabian Oil CompanyInventors: Feng Liang, B. Raghava Reddy, Leiming Li, Ghaithan Al-Muntasheri
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Patent number: 10066151Abstract: The method for well-stimulation through a wellbore in a rock formation is hydraulic fracturing under high temperature conditions. The method includes injecting a fracturing fluid system to the rock formation; fracturing the rock formation at a temperature between 150-260 degrees Celsius; and recovering fluid components of the fracturing fluid system from the wellbore and setting the proppant in the fractures. The fracturing fluid system includes proppant and a plurality of fluid components. The fluid components can include water, a gelling agent, and a stabilizer made of ascorbic acid. The ascorbic acid stabilizes viscosity of the gelling agent, adjusts pH, and delays cross linking. Amount of components and additional components, such as a cross-linking agent, a breaker, another adjusting agent and an inverting surfactant adjust the fracturing fluid system for well conditions and a type of treatment to be completed.Type: GrantFiled: April 9, 2018Date of Patent: September 4, 2018Assignee: CNPC USA CorporationInventors: Lulu Song, Zhenzhou Yang
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Patent number: 10053613Abstract: A subterranean formation sealant includes a mixture of an aqueous colloidal dispersion including silica nanoparticles and a C6-C12 fatty acid. Heating the sealant above 70° C. initiates gelation of the sealant. Sealing an opening in a water or gas producing zone in a subterranean formation includes providing a sealant including a mixture of a colloidal dispersion including silica nanoparticles and a C6-C12 fatty acid to the water or gas producing zone, initiating gelation of the sealant in situ, and solidifying the sealant in the water or gas producing zone to yield a set gel, thereby sealing the opening in the water or gas producing zone.Type: GrantFiled: May 2, 2017Date of Patent: August 21, 2018Assignee: Saudi Arabian Oil CompanyInventors: Rajendra Arunkumar Kalgaonkar, Vikrant Bhavanishankar Wagle, Jin Huang, Abdullah Saleh Hussain Al-Yami
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Patent number: 9951262Abstract: A well servicing fluid formulated with ingredients comprising a viscosifying polymer that is a crosslinked copolymer of an ethylenically unsaturated dicarboxylic anhydride and an alkyl vinyl ether, or the di-acid thereof; a pH adjuster capable of maintaining a pH of 5.5 or greater; and a solvent. Methods of treating a well formation with the wellbore servicing fluid and methods of making the wellbore servicing fluid.Type: GrantFiled: November 18, 2015Date of Patent: April 24, 2018Assignee: BAKER HUGHES, A GE COMPANY, LLCInventors: D.V. Satyanarayana Gupta, Kay Elaine Cawiezel, Rupa Venugopal, Tanhee Ary Galindo
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Patent number: 9695353Abstract: Disclosed herein is a foamed fracturing fluid comprising a carrier fluid; a polymer that is soluble in the carrier fluid; the polymer being a synthetic polymer, wherein the synthetic polymer comprises a labile group that is operative to facilitate decomposition of the synthetic polymer upon activation of the labile group; a foaming agent; and a gas constituent, the synthetic polymer, foaming agent and gas constituent being operative to increase the viscosity of the carrier fluid to about 50 centipoise or greater at 100 s?1, the foamed fracturing fluid being operative to reduce friction during a downhole fracturing operation and to transport a proppant during the downhole fracturing operation. A method for treating a hydrocarbon-bearing formation is also disclosed herein.Type: GrantFiled: March 11, 2013Date of Patent: July 4, 2017Assignee: BAKER HUGHES INCORPORATEDInventors: Scott Gregory Nelson, Richard Wheeler
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Patent number: 9663707Abstract: A fracturing fluid containing a hydratable viscosifying polymer and a zirconium acetylacetonate crosslinker provides a green alternative to conventional systems. The zirconium aceylacetonate is dissolved in benzyl alcohol or in a mixture of benzyl alcohol and 2,2-dimethyl-1,3-dioxolan-4(yl)-methanol. The pH of the fracturing fluid may be between from about 3.5 to about 11.5. The fracturing fluid may contain an acidic buffering agent or a basic buffering agent. The fracturing fluid may be pumped into a well in order to initiate or enlarge a fracture within a subterranean formation penetrated by the well.Type: GrantFiled: October 23, 2013Date of Patent: May 30, 2017Assignee: Baker Hughes IncorporatedInventors: D. V. Satyanarayana Gupta, Paul S. Carman, Minh Vo
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Patent number: 9475981Abstract: A method of treating a subterranean formation penetrated by a wellbore includes introducing a treatment fluid comprised at least a crosslinkable component, and a metal crosslinker to the subterranean formation, forming a crosslinked treatment fluid, and de-crosslinking bonds of the crosslinked treatment fluid by manipulating a pH of the treatment fluid with a pH triggering agent, wherein the pH triggering agent is an amine-precursor compound or a derivative thereof.Type: GrantFiled: July 14, 2014Date of Patent: October 25, 2016Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Patrice Abivin, Wingki Lee, Sergey Makarychev-Mikhailov, Michael D. Parris, Andrey Mirakyan, Rasika Prabhu
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Patent number: 9394475Abstract: A multicomponent material can be used to treat subterranean formations. The multicomponent material can be a cocrystal that includes a breaker cocrystallized with another molecule for modifying a solubility profile of the breaker. Cocrystallazing the breaker with another molecule provides control over the rate at which the breaker dissolves in a treating fluid so the breaker will dissolve and become active at an optimum time or under optimum conditions.Type: GrantFiled: August 9, 2013Date of Patent: July 19, 2016Assignee: Halliburton Energy Services, Inc.Inventor: Nathan Carl Schultheiss
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Patent number: 9027644Abstract: Crosslinked gelling agents employed during subterranean operations use electronically-modified boronic acids to enable higher operating temperatures while allowing reduced gelling agent loadings; the boronic acids having Formula I: X1 and X2 are independently selected from O, CH2, CH2O, OCH2, bond, and null, Y1 and Y2 are independently N or C, Ar is a 5- or 6-membered ring aryl or heteroaryl group with a link L to monomer unit M1, m is 1 or 2, n is 0, 1, 2, or 3, and each Z is independently an electron withdrawing group selected from nitro, ester, carboxylic acids, carboxylates, halogen, cyano, amide, acyl, alkylsulfonyl, arylsulfonyl, heteroarylsulfonyl, CF3, a quaternary ammonium salt, polyhaloalkyl, and carbamate, with the proviso that when n is 0, the link L between M1 and Ar includes an electron withdrawing group attached to Ar, and introducing the treatment fluids into subterranean formations.Type: GrantFiled: February 25, 2014Date of Patent: May 12, 2015Assignee: Halliburton Energy Services, Inc.Inventors: James William Ogle, Jeremy Holtsclaw, David Loveless
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Publication number: 20150114638Abstract: The disclosed compositions and methods provide a system that is effective for hydraulic fracturing, which can be used to extract natural gas and oil from subterranean formations, such as deep shale and coal bed type rack formations. In a first aspect, the invention features a composition for hydraulic fracturing, which includes a low pH product, a surfactant, and a thickening agent, all in an aqueous composition. The composition includes i) from about 0.01 wt % to about 20.0 wt % of a low pH product that includes an ammonium salt (e.g., ammonium bicarbonate, ammonium carbonate, or ammonium hydroxide) and hydrogen chloride (and optionally a carborane).Type: ApplicationFiled: May 13, 2013Publication date: April 30, 2015Inventor: Glenn Louis TAYLOR
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Publication number: 20150101818Abstract: Crosslinking of a crosslinkable viscosifying agent and a crosslinking agent may be delayed in a well treatment fluid by incorporated within the fluid a glutamic-N,N-diacetic acid salt, such as a glutamic-N,N-diacetic acid sodium salt like tetrasodium glutamate diacetate. The crosslinking agent may be a zirconium containing crosslinking agent like zirconium (IV) acetyl acetonate. The viscosifying agent may be guar or a guar derivative such as carboxyalkyl guars and hydroxyalkylated guars like carboxymethyl guar, hydroxypropyl guar, hydroxyethyl guar, hydroxybutyl guar and carboxymethylhydroxypropyl guar.Type: ApplicationFiled: December 19, 2014Publication date: April 16, 2015Inventors: D.V. Satyanarayana Gupta, Kay Elaine Cawiezel
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Patent number: 8985213Abstract: A subterranean zone surrounding a well bore is fractured with a fracturing fluid. Micro proppant of 200 mesh or smaller is pumped into far field fractures of the subterranean zone and props the far field fractures open.Type: GrantFiled: August 2, 2012Date of Patent: March 24, 2015Assignee: Halliburton Energy Services, Inc.Inventors: Rajesh Kumar Saini, Bradley L. Todd, Jimmie D. Weaver, James W. Ogle, David Michael Loveless, Philip Nguyen
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Publication number: 20150060067Abstract: A well fracturing fluid is shown which includes an aqueous base fluid, a hydratable polymer, such as a guar gum, and a suitable crosslinking agent for crosslinking the hydratable polymer to form a polymer gel. The hydratable polymer has a higher molecular weight which is achieved by improvements in the processing of the guar split. The higher molecular weight polymer provides improved performance in well fracturing operations.Type: ApplicationFiled: October 23, 2014Publication date: March 5, 2015Inventors: Jeffrey C. Dawson, Hoang Van Le
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Patent number: 8967263Abstract: Methods of treating a subterranean formation including introducing a fracturing fluid into the subterranean formation at a pressure sufficient to create or enhance at least one fracture therein; a treatment fluid comprising a base fluid, proppant particulates, a crosslinking agent, and a stress-activated resin comprising a stress-activated moiety, wherein the stress-activated resin does not substantially react with the crosslinking agent until placed under stress; introducing the treatment fluid into the at least one fracture of the subterranean formation; removing the pressure in the subterranean formation such that the fracture closes on the treatment fluid and applies a stress to the stress-activated resin; and crosslinking the resin with the crosslinking agent, thereby forming a resinous proppant pack therein.Type: GrantFiled: September 18, 2012Date of Patent: March 3, 2015Assignee: Halliburton Energy Services, Inc.Inventors: James William Ogle, Philip D. Nguyen
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Publication number: 20150053409Abstract: A well treatment method includes forming a well treatment fluid by combining ingredients including a polymer, a crosslinker, an acidifying substance, and a base fluid. Crosslinking increases viscosity of the fluid during a development time. A pH decrease is controlled during the development time using the acidifying substance. The method also includes delaying the development time of the viscosity increase by controlling the pH decrease. A well treatment method includes forming a well treatment fluid by combining ingredients including a hydratable polymer, a crosslinker, an acidifying substance, and a base fluid. The method includes delaying development time of a viscosity increase by controlling a pH decrease without adding further acidifying substance after combining the polymer, crosslinker, acidifying substance, and base fluid. A well treatment fluid formulated with ingredients include a base fluid, a polymer, a crosslinker, and an acidifying substance.Type: ApplicationFiled: August 22, 2013Publication date: February 26, 2015Applicant: BAKER HUGHES INCORPORATEDInventors: MAGNUS U. LEGEMAH, PAUL S. CARMAN, RUPA VENUGOPAL, HONG SUN
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Patent number: 8960290Abstract: The present invention relates to environmentally friendly delayed crosslinking complexes that are useful in subterranean treatment fluids. One embodiment of the present invention provides a method of providing a treatment fluid having a first viscosity and includes: an aqueous base fluid, a viscosifying agent, a delayed crosslinking complex having: a metal and a ligand, the ligand having at least one hydroxyl group and at least one carboxylic acid group; and placing the treatment fluid in a subterranean formation. In some embodiments, the delayed crosslinking complex is compliant and/or the viscosifying agent is compliant.Type: GrantFiled: December 19, 2011Date of Patent: February 24, 2015Assignee: Halliburton Energy Services, Inc.Inventors: Melissa Weston, Jeremy Holtsclaw, David Loveless
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Publication number: 20150041139Abstract: A well treatment fluid includes an aqueous-based fluid, a crosslinked CMHEC polymer, and a crosslinker. The CMHEC polymer exhibits a DS of 0.2 to 0.6 and a MS of 2.0 to 2.5. The well treatment fluid exhibits a viscosity of at least about 100 cP. A well treatment method includes crosslinking a CMHEC polymer in an aqueous-based fluid at a pH of at least about 6. The crosslinking increases a viscosity of the well treatment fluid to at least about 100 cP. A well is treated with the well treatment fluid at a temperature of at least about 200° F. Another well treatment method includes forming a well treatment fluid from produced water that has a TDS content of at least about 150,000 ppm. The crosslinking increases a viscosity of the well treatment fluid to at least about 100 cP.Type: ApplicationFiled: August 7, 2013Publication date: February 12, 2015Applicant: BAKER HUGHES INCORPORATEDInventors: JIA ZHOU, MAGNUS U. LEGEMAH, HONG SUN, BRIAN B. BEALL, QI QU
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Publication number: 20150021033Abstract: A thixotropic agent comprised of a gel which is comprised of a polymeric organic material cross-linked with certain boehmite aluminas having a crystallite size of less than about 100 ? as measured on the 120 plane.Type: ApplicationFiled: August 22, 2012Publication date: January 22, 2015Inventor: David A. Barclay
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Patent number: 8936083Abstract: Methods of forming channels within propped fractures that are essentially free of proppants and more spacious than the interstitial spaces within traditional proppant packs. Specifically, various proppant-laden fluids may be placed within a fracture in a subterranean formation, the proppants in the proppant-laden fluids having at least two distinct ranges of density. Once placed inside the fracture, the proppants can settle, separate, and consolidate into at least two distinct permeable masses according to their densities. Consequently, the high-density and low-density proppants can separate and form separate proppant masses when the fracture closes on the proppants. Through this process, a highly conductive channel can form inside the fracture through which production fluids can flow.Type: GrantFiled: August 28, 2012Date of Patent: January 20, 2015Assignee: Halliburton Energy Services, Inc.Inventor: Philip D. Nguyen
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Publication number: 20140367111Abstract: Gellable treatment fluids containing an acrylamide copolymer and a suitable surfactant can be used in various subterranean operations where it is necessary for the treatment fluid to remain in a gelled state for extended periods of time at high formation temperatures. The surfactants are chosen to increase the relative permeability of the hydrocarbons in the subterranean formation by wettability alteration.Type: ApplicationFiled: June 12, 2013Publication date: December 18, 2014Inventors: Pubudu H. Gamage, William Walter Shumway, Jay Paul Deville
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Patent number: 8899332Abstract: A method for building a plug in a horizontal wellbore using a fluid pill containing a suspended well treatment agent. The well treatment agent contains an ultra lightweight (ULW) deformable core and a viscosifying polymer and crosslinking agent coated onto the core. The fluid pill is pumped into the wellbore at the end of a fracturing treatment. The fluid pill is displaced by a displacement fluid and the fluid pill transforms to a thickened gel. The thickened gel is formed by the in-situ reaction of the viscosifying polymer and crosslinking which become disassociated from the ULW deformable core. The gelled fluid containing the ULW deformable core assists in the bridging of the ULW deformable core and forming the bridge plug.Type: GrantFiled: November 22, 2011Date of Patent: December 2, 2014Assignee: Baker Hughes IncorporatedInventors: Harold Dean Brannon, Harold Gene Hudson
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Patent number: 8893790Abstract: Biomimetic adhesive compositions can be used in various aspects of subterranean treatment operations. Methods for treating a subterranean formation can comprise: providing an adhesive composition that comprises a first polymer comprising a plurality of monomers that comprise a phenolic moiety, a biopolymer that is crosslinkable with the first polymer, a crosslinking agent, and an oxidizing agent; introducing the adhesive composition into a subterranean formation; and forming a coacervate-bound surface in the subterranean formation by crosslinking the first polymer.Type: GrantFiled: May 23, 2012Date of Patent: November 25, 2014Assignee: Halliburton Energy Services, Inc.Inventors: Enrique A. Reyes, Pinmanee Boontheung, Narongsak Tonmukayakul
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Publication number: 20140318775Abstract: The present invention relates to methods for hydraulically fracturing a subterranean formation to improve the production rates and ultimate recovery by contacting unconsolidated resin-coated proppant particulates residing in a propped fracture with a reactive crosslinker in order to form a consolidated proppant pack. The present invention also relates to methods for use in water injection wells to consolidate the resin-coated proppant particulates in a gravel packed or frac packed region of a wellbore.Type: ApplicationFiled: April 23, 2014Publication date: October 30, 2014Applicant: CARBO CERAMICS INC.Inventors: Chad Cannan, Thu Lieng, Daryl Erwin Johnson, Mark Conner
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Publication number: 20140318795Abstract: Breaking compositions are disclosed for controlled breaking of borate cross-linked fracturing fluids, and to method for making and using same, where the composition includes an oxidative component and an ester component.Type: ApplicationFiled: July 11, 2014Publication date: October 30, 2014Applicant: CLEARWATER INTERNATIONAL, LLCInventors: Joseph E. Thompson, Sr., Sarkis R. Kakadjian, Jose L. Garza, Frank Zamora
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Publication number: 20140299317Abstract: An improvement over known hydraulic fracturing fluids. Boundary layer kinetic mixing material is added to components of fracturing fluid wherein kinetic mixing material is a plurality of particles wherein at least 25% of particles are several types, i.e., having surface characteristics of thin walls, three dimensional wedge-like sharp blades, points, jagged bladelike surfaces, thin blade surfaces, three-dimensional blade shapes that may have shapes similar to a “Y”, “V” or “X” shape or other geometric shape, slightly curved thin walls having a shape similar to an egg shell shape, crushed hollow spheres, sharp bladelike features, 90° corners that are well defined, conglomerated protruding arms in various shapes, such as cylinders, rectangles, Y-shaped particles, X-shaped particles, octagons, pentagon, triangles, and diamonds.Type: ApplicationFiled: January 6, 2014Publication date: October 9, 2014Applicant: Ecopuro, LLCInventor: WILLIAM L. JOHNSON, SR.
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Publication number: 20140299318Abstract: A complex fracture network within a hydrocarbon-bearing subterranean formation is created by first pumping a first fluid into the formation to create or enlarge a primary fracture and then pumping a second fluid into the formation wherein the second fluid contains a viscous material and the first fluid. By diverting the flow of the second flow, a secondary fracture is created having a directional orientation distinct from the directional orientation of the primary fracture.Type: ApplicationFiled: March 26, 2014Publication date: October 9, 2014Inventors: James B. Crews, Chunlou Li
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Patent number: 8851179Abstract: A process and process line is provided for preparing a friction-reduced hydraulic fracturing fluid at a central location which can be readily transported to an oil or gas well in a formation at a well site, comprising: preparing a mixture of polymer and water at the central location by shearing the polymer in the water in a high shear environment to create the friction-reduced hydraulic fracturing fluid; pumping the friction-reduced hydraulic fracturing fluid through a series of pumps and pipelines to the well site; and injecting the hydraulic fracturing fluid into the oil or gas well at a pressure sufficient to cause fracturing of the formation.Type: GrantFiled: December 21, 2012Date of Patent: October 7, 2014Assignee: Encana CorporationInventors: Grant Todd DeFosse, Lois Louise McCorriston