Patents Assigned to Multi-Chem Group, LLC
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Patent number: 10442986Abstract: Systems and methods for treating subterranean formations including quantifying additive concentrations. Certain of those methods include; introducing a fluid including an aqueous base fluid and a friction reducer into a wellbore penetrating of a subterranean formation at a pressure sufficient to create or enhance one or more fractures within the subterranean formation; recovering a portion of the fluid from the wellbore; adding a reactive agent to a sample of the portion of the fluid that has been recovered from the wellbore, where the reactive agent reacts with the friction reducer to form a photo-detectable compound in the sample; measuring a light absorbance of the sample at a selected wavelength of light; and using the measured absorbance and a calibration curve for the selected wavelength of light to determine the concentration of the friction reducer in the fluid that has been recovered from the wellbore.Type: GrantFiled: May 31, 2016Date of Patent: October 15, 2019Assignee: Multi-Chem Group, LLCInventors: Kai He, Liang Xu, Paul Lord
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Patent number: 10435620Abstract: Provided are acidic treatment fluids comprising a weakly emulsifying surfactant, an aqueous base fluid, and an acid. In some embodiments, the treatment fluids are capable of forming short-lived oil-in-acid emulsions due, at least in part, to the interaction of at least a portion of the weakly emulsifying surfactant with one or more oil or gas molecules within a subterranean formation.Type: GrantFiled: February 5, 2018Date of Patent: October 8, 2019Assignee: Multi-Chem Group, LLCInventor: Liang Xu
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Patent number: 10435989Abstract: Multi-stage treatment methods for the treatment or removal of iron sulfide scales in subterranean operations and operations involving the production and/or transportation of oil and gas. In one embodiment, the methods include identifying one or more types of iron sulfide scale present in a portion of a subterranean formation; introducing a first treatment composition comprising an acid into at least a portion of the subterranean formation to partially dissolve the iron sulfide scale therein; and introducing a second treatment composition into the portion of the subterranean formation after the first treatment composition, the second treatment composition comprising an iron sulfide treating additive selected based at least in part on a type of iron sulfide scale identified in the subterranean formation.Type: GrantFiled: December 23, 2014Date of Patent: October 8, 2019Assignee: Multi-Chem Group, LLCInventors: Yang Peng, Zhiwei Yue, Chunfang Fan
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Patent number: 10364385Abstract: Low-dosage hydrate inhibitor (“LDHI”) compounds comprising multiple lipophilic tails and a hydrophilic head may be employed into fluids to inhibit agglomeration of hydrates, among other things. Suitable hydrophilic heads may include quaternary or tertiary ammonium cation moieties, and combinations thereof. Such LDHI compounds in some embodiments may include reaction products of DETA and/or other amines, fatty acid(s), and, optionally, alkyl halide(s). Compounds according to some embodiments may be employed in fluids in various environments, such as a conduit penetrating a subterranean formation, or a conduit carrying fluid in an industrial setting.Type: GrantFiled: July 31, 2018Date of Patent: July 30, 2019Assignee: Multi-Chem Group, LLCInventors: Funian Zhao, Yanqiu Sun, Liangwei Qu, Erick J. Acosta
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Publication number: 20190153302Abstract: A method may comprise: determining a total dissolved solids (TDS) concentration of a water source; correlating the TDS concentration to an ion concentration; and selecting at least one friction reducing polymer for a hydraulic fracturing operation based at least in part on the ion concentration.Type: ApplicationFiled: July 3, 2018Publication date: May 23, 2019Applicant: Multi-Chem Group, LLCInventors: Ian Wood Straffin, Howard Thomas Riley, Teddy Joel Dubois, James William Ogle
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Publication number: 20190153303Abstract: A method may include: determining a total dissolved solids (TDS) concentration of a water source; correlating the TDS concentration to an ion concentration; and selecting at least one friction reducing polymer for a hydraulic fracturing operation based at least in part on the ion concentration.Type: ApplicationFiled: December 27, 2018Publication date: May 23, 2019Applicant: Multi-Chem Group, LLCInventors: Howard Thomas Riley, Teddy Joel Dubois, James William Ogle
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Patent number: 10287487Abstract: A slick water fracturing fluid including a brine, an inorganic nitrate, a nitrogen reducing bacteria, a scale inhibitor selected from the group consisting of a polyacrylate polymer, a polyacrylate copolymer, a polyacrylate terpolymer, and mixtures thereof, and a friction reducer, wherein the friction reducer is a polyacrylamide.Type: GrantFiled: May 8, 2017Date of Patent: May 14, 2019Assignee: MULTI-CHEM GROUP LLCInventors: Danny K. Durham, Michael L. Harless
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Publication number: 20190119563Abstract: The present disclosure relates to systems and methods for treating subterranean formations.Type: ApplicationFiled: May 31, 2016Publication date: April 25, 2019Applicant: Multi-Chem Group, LLCInventors: Kai HE, Liang XU, Paul LORD
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Patent number: 10246628Abstract: Compounds comprising multiple hydrophilic heads and a lipophilic tail may be contacted with a metal or other surface so as to adhere to the surface and inhibit corrosion, among other things. Suitable hydrophilic heads may include quaternary ammonium cation moieties, phosphonium cation moieties, and combinations thereof. Such corrosion-inhibiting compounds may be introduced into a wellbore penetrating at least a portion of a subterranean formation, for instance in oil and/or gas recovery operations and the like, whereupon the compound may adhere to a metal or other surface downhole so as to inhibit corrosion of the surface. These compounds may be employed in various other environments, such as any metal or other surface that may be exposed to corrosive conditions.Type: GrantFiled: March 22, 2017Date of Patent: April 2, 2019Assignee: MULTI-CHEM GROUP, LLCInventors: Liangwei Qu, Nathan Darrell Davis, Funian Zhao, Qiang Fu
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Patent number: 10113102Abstract: Processes and compositions to control inorganic sulfide scale formations in oilfield applications, including flow lines, wellbores, and subterranean formations. One example involves providing a treatment fluid comprising: a base fluid, a scale inhibitor, and a water clarifying agent; introducing the treatment fluid into a target region, wherein an inorganic cation and a sulfide anion are present in the target region; allowing the inorganic cation and the sulfide anion to form a sulfide precipitate; and using the treatment fluid to remove at least a portion of the sulfide precipitate from the target region.Type: GrantFiled: December 23, 2014Date of Patent: October 30, 2018Assignee: Multi-Chem Group, LLCInventors: Yang Peng, Zhiwei Yue, Chunfang Fan, Johnathan Scott Hazlewood
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Patent number: 10106721Abstract: Methods, compositions, and systems for scale inhibitor squeeze treatments using certain cationic surfactants are provided. In one embodiment, the methods comprise: introducing a pre-flush fluid into at least a portion of a subterranean formation, the pre-flush fluid comprising a cationic surfactant comprising two or more hydrophilic heads, at least one lipophilic tail, and one or more linking groups to which the hydrophilic heads and the lipophilic tail are bonded; and introducing a treatment fluid comprising anionic scale inhibitor into the portion of the subterranean formation after at least a portion of the pre-flush fluid has been introduced into the portion of the subterranean formation.Type: GrantFiled: December 22, 2014Date of Patent: October 23, 2018Assignee: Multi-Chem Group, LLCInventors: Zhiwei Yue, Funian Zhao, Yang Peng, Liangwei Qu, Chunfang Fan
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Patent number: 10100241Abstract: Compositions and methods of using of such compositions to, for example, inhibit of the formation of gas hydrate agglomerates are provided. In one embodiment, the methods comprise: introducing a hydrate inhibitor composition comprising a compound into a fluid, wherein the compound comprises two hydrophobic cation moieties, a lipophilic tail, and two linking moieties.Type: GrantFiled: April 19, 2016Date of Patent: October 16, 2018Assignee: Multi-Chem Group, LLCInventors: Qiang Lan, Deepak Steven Monteiro, Mark Paul Ceglio, II, Pushkala Krishnamurthy, Erick J. Acosta
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Patent number: 10059871Abstract: Low-dosage hydrate inhibitor (“LDHI”) compounds comprising multiple lipophilic tails and a hydrophilic head may be employed into fluids to inhibit agglomeration of hydrates, among other things. Suitable hydrophilic heads may include quaternary or tertiary ammonium cation moieties, and combinations thereof. Such LDHI compounds in some embodiments may include reaction products of DETA and/or other amines, fatty acid(s), and, optionally, alkyl halide(s). Compounds according to some embodiments may be employed in fluids in various environments, such as a conduit penetrating a subterranean formation, or a conduit carrying fluid in an industrial setting.Type: GrantFiled: April 21, 2017Date of Patent: August 28, 2018Assignee: Multi-Chem Group, LLCInventors: Funian Zhao, Yanqui Sun, Liangwei Qu, Erick J. Acosta
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Patent number: 9982185Abstract: Systems and methods for creating surfactant-polyelectrolyte complexes at a well site are provided. In one embodiment, the methods comprise: providing a first solution comprising at least one surfactant and a second solution comprising at least one polyelectrolyte; using a stop-flow mixing apparatus at a well site to mix the first and second solutions to form one or more surfactant-polyelectrolyte complexes; using a low-dose pumping apparatus at the well site to transfer the one or more surfactant-polyelectrolyte complexes from the stop-flow mixing apparatus to a blending apparatus at the well site; using the blending apparatus to mix the one or more surfactant-polyelectrolyte complexes with an aqueous base fluid to form a treatment fluid; and introducing the treatment fluid into a well bore penetrating at least a portion of a subterranean formation at the well site.Type: GrantFiled: August 1, 2014Date of Patent: May 29, 2018Assignee: MULTI-CHEM GROUP, LLCInventors: Liang Xu, Jayant Rane, Kai He
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Patent number: 9970265Abstract: Systems and methods for creating and/or using multi-functional surfactant complexes that may enhance surfactant treatments in subterranean formations are provided. In some embodiments, the methods comprise: providing a treatment fluid comprising an aqueous base fluid and one or more multi-functional surfactant complexes that comprise at least one surfactant and at least one polymeric additive, wherein the surfactant and the polymeric additive carry opposite charges; and introducing the treatment fluid into a well bore at a well site penetrating at least a portion of a subterranean formation.Type: GrantFiled: June 28, 2017Date of Patent: May 15, 2018Assignee: Multi-Chem Group, LLCInventors: Liang Xu, Jayant Rane, Kai He
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Patent number: 9969928Abstract: Compositions and methods for formulating treatment fluids that comprise a surfactant having reduced and delayed adsorption. In one embodiment, the method comprises: providing a fluid comprising: an aqueous base fluid, a surfactant, and a polyelectrolyte; introducing the fluid into a wellbore penetrating at least a portion of a subterranean formation; and contacting at least a portion of the subterranean formation with the polyelectrolyte. In another embodiment, the method comprises providing a fluid comprising: an aqueous base fluid, a surfactant, and a polyelectrolyte; injecting the fluid into a wellbore penetrating at least a portion of a subterranean formation at a pressure sufficient to create or enhance one or more fractures within the subterranean formation; and contacting at least a portion of the subterranean formation with the polyelectrolyte.Type: GrantFiled: July 2, 2014Date of Patent: May 15, 2018Assignee: Multi-Chem Group, LLCInventors: Kai He, Liang Xu
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Patent number: 9920239Abstract: Provided are acidic treatment fluids comprising a weakly emulsifying surfactant, an aqueous base fluid, and an acid. In some embodiments, the treatment fluids are capable of forming short-lived oil-in-acid emulsions due, at least in part, to the interaction of at least a portion of the weakly emulsifying surfactant with one or more oil or gas molecules within a subterranean formation.Type: GrantFiled: April 11, 2014Date of Patent: March 20, 2018Assignee: MULTI-CHEM GROUP, LLCInventor: Liang Xu
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Patent number: 9902893Abstract: Compounds comprising multiple hydrophilic heads and a lipophilic tail may be employed into fluids to inhibit agglomeration of hydrates, among other things. Suitable hydrophilic heads may include secondary, tertiary, and/or quaternary ammonium cation moieties, phosphonium cation moieties, and combinations thereof. Such LDHI compounds may provide enhanced interactivity with hydrate crystals and/or hydrate-forming molecules. These compounds may be employed in fluids in various environments, such as a conduit penetrating a subterranean formation, or a conduit carrying fluid in an industrial setting.Type: GrantFiled: September 18, 2017Date of Patent: February 27, 2018Assignee: Multi-Chem Group, LLCInventors: Liangwei Qu, Yangqiu Sun, Funian Zhao, Curtis Conkle, Erick J. Acosta
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Patent number: 9896616Abstract: Composition for the removal or inactivation of hydrogen sulfide or other species comprising ionizable sulfur (e.g., mercaptans, thiols, etc.) using compositions containing acrylonitrile and/or derivatives thereof are provided. Methods for the removal or inactivation of hydrogen sulfide or other sulfur species in oilfield sites and other related applications using compositions containing acrylonitrile and/or derivatives thereof are provided.Type: GrantFiled: December 23, 2014Date of Patent: February 20, 2018Assignee: Multi-Chem Group, LLCInventors: Liu Shi, Funian Zhao, Liangwei Qu, Michael Harless, Ron Hoppe
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Publication number: 20170355895Abstract: The present disclosure relates to methods and compositions to control inorganic sulfide scale formations in oilfield applications, including flow lines, wellbores, and subterranean formations. An embodiment of the present disclosure is a method comprising: providing a treatment fluid comprising: a base fluid, a scale inhibitor, and a water clarifying agent; introducing the treatment fluid into a target region, wherein an inorganic cation and a sulfide anion are present in the target region; allowing the inorganic cation and the sulfide anion to form a sulfide precipitate; and using the treatment fluid to remove at least a portion of the sulfide precipitate from the target region.Type: ApplicationFiled: December 23, 2014Publication date: December 14, 2017Applicant: Multi-Chem Group, LLCInventors: Yang Peng, Zhiwei Yue, Chunfang Fan, Johnathan Scott Hazlewood