Patents by Inventor YUCUN LOU
YUCUN LOU has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11136461Abstract: Embodiments may generally take the form of a degradable composite structure and a method for controlling the rate of degradation of a degradable composite structure. An example embodiment may take the form of a degradable polymer matrix composite (PMC) including a matrix having: a degradable polymer, a fiber reinforcement, and particulate fillers. The fiber loading is between approximately 10% to 70% by weight and the particulate loading is between approximately 5% to 60%.Type: GrantFiled: December 18, 2015Date of Patent: October 5, 2021Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Philip Kokel, Shitong S. Zhu, Matthew Godfrey, Meng Qu, Jahir A. Pabon, Yucun Lou, Francois M. Auzerais, John David Rowatt, Roman Kats, Gauri Joshi, Miranda Amarante
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Patent number: 10907090Abstract: Methods include introducing a multistage treatment fluid into one or more intervals of a wellbore, wherein the treatment fluid contains one or more stages of a polymer-forming composition and one or more stages of a spacer fluid and initiating polymerization of the one or more stages of polymer-forming composition. Methods may include designing a multistage treatment fluid containing one or more stages of a polymer-forming composition and one or more stages of a spacer fluid, wherein or more stages of the polymer-forming composition comprises a thermosetting polymer; and pumping the multistage treatment fluid into a wellbore, wherein the pumping rate is determined by constructing a model based upon (a) the minimum pumping rate determined from the critical reaction temperature and the downhole temperature, (b) the fracture closing time, (c) the temperature within one or more fractures, and (d) the maximum pumping rate.Type: GrantFiled: July 26, 2016Date of Patent: February 2, 2021Assignee: Schlumberger Technology CorporationInventors: Francois Auzerais, Meng Qu, Shitong S. Zhu, Agathe Robisson, Yucun Lou, Syed Afaq Ali, Bruce Alexander Mackay, Sandeep Verma, Sharath Chandra Mahavadi
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Patent number: 10876042Abstract: Methods of treating a subterranean formation penetrated by a wellbore may include injecting a multistage fracturing treatment into the wellbore comprising one or more stages of geopolymer precursor composition containing a geopolymer precursor and an activator, and one or more stages of a spacer fluid; and curing the one or more stages of geopolymer precursor composition. In another aspect, methods of treating a subterranean formation penetrated by a wellbore may include injecting a multistage fracturing treatment into the wellbore that include one or more stages of geopolymer precursor composition, wherein the geopolymer precursor composition includes an emulsion having an oleaginous external phase, and an internal phase comprising one or more surfactants, a geopolymer precursor, and an activator, and one or more stages of a spacer fluid; and curing the one or more stages of geopolymer precursor composition.Type: GrantFiled: June 15, 2017Date of Patent: December 29, 2020Assignee: Schlumberger Technology CorporationInventors: Meng Qu, Francois M. Auzerais, Sandeep Verma, Agathe Robisson, Sharath Chandra Mahavadi, Yucun Lou, Shitong S. Zhu
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Patent number: 10550662Abstract: Procedures include designing parameters for cementation jobs based upon the wellbore geometries and loading conditions. The cementation parameters such as Young's modulus are selected such that longitudinal crack propagation is inhibited. Procedures also include determining critical loading conditions for an already-cemented casing annulus based upon the specified cement properties and wellbore conditions. The critical loading conditions are determined such that longitudinal crack propagation in the cement is inhibited. Techniques are used to improve the friction coefficients between the casing and cement to inhibit longitudinal crack propagation. The treatments can include forming surface patterns that enhance friction and/or making the casing surface oleophopic and/or hydrophilic.Type: GrantFiled: September 17, 2015Date of Patent: February 4, 2020Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Yucun Lou, Meng Qu
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Patent number: 10436019Abstract: Methods and apparatus of adjusting matrix acidizing procedures are disclosed. An example method includes determining parameters of a wellbore fluid during a matrix acidizing procedure using at least a first sensor and a second sensor. The parameters include velocity of the wellbore fluid and a temperature difference between the first sensor and the second sensor. The method also includes, based on the parameters, determining a characteristic relative to an invasion length of a reactive fluid within the formation, the reactive fluid used in association with the matrix acidizing procedure.Type: GrantFiled: August 11, 2015Date of Patent: October 8, 2019Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Yucun Lou, Francois M. Auzerais, Elena Borisova, Tullio Moscato
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Publication number: 20190264095Abstract: Methods of treating a subterranean formation penetrated by a wellbore may include injecting a multistage fracturing treatment into the wellbore comprising one or more stages of geopolymer precursor composition containing a geopolymer precursor and an activator, and one or more stages of a spacer fluid; and curing the one or more stages of geopolymer precursor composition. In another aspect, methods of treating a subterranean formation penetrated by a wellbore may include injecting a multistage fracturing treatment into the wellbore that include one or more stages of geopolymer precursor composition, wherein the geopolymer precursor composition includes an emulsion having an oleaginous external phase, and an internal phase comprising one or more surfactants, a geopolymer precursor, and an activator, and one or more stages of a spacer fluid; and curing the one or more stages of geopolymer precursor composition.Type: ApplicationFiled: June 15, 2017Publication date: August 29, 2019Inventors: Meng Qu, Francois M. Auzerais, Sandeep Verma, Agathe Robisson, Sharath Chandra Mahavadi, Yucun Lou, Shitong S. Zhu
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Publication number: 20180298271Abstract: Methods include introducing a multistage treatment fluid into one or more intervals of a wellbore, wherein the treatment fluid contains one or more stages of a polymer-forming composition and one or more stages of a spacer fluid and initiating polymerization of the one or more stages of polymer-forming composition. Methods may include designing a multistage treatment fluid containing one or more stages of a polymer-forming composition and one or more stages of a spacer fluid, wherein or more stages of the polymer-forming composition comprises a thermosetting polymer; and pumping the multistage treatment fluid into a wellbore, wherein the pumping rate is determined by constructing a model based upon (a) the minimum pumping rate determined from the critical reaction temperature and the downhole temperature, (b) the fracture closing time, (c) the temperature within one or more fractures, and (d) the maximum pumping rate.Type: ApplicationFiled: July 26, 2016Publication date: October 18, 2018Applicant: Schlumberger Technology CorporationInventors: Francois Auzerais, Meng QU, Shitong S. Zhu, Agathe Robisson, Yucun Lou, Syed Afaq Ali, Bruce Alexander Mackay, Sandeep Verma, Sharath Chandra Mahavadi
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Publication number: 20180298272Abstract: Methods may include treating a subterranean formation penetrated by a wellbore, including: pumping a treatment fluid containing one or more polymeric proppants into the formation at a pressure sufficient to initiate a fracture, wherein the one or more polymeric proppants are composed of one or more polymers selected from a group of polyethylene, polypropylene, butylene, polystyrenes (PS) and copolymers thereof, high-impact grafted polystyrene (HIPS), acrylic polymers, methacrylic polymers, polyvinyl chloride (PVC), polyvinyl acetate (PVA), polycarbonate (PC), hydrogenated nitrile butadiene rubber (HNBR), ethyelene propylene diene monomer (EPDM), polydimethylsiloxane (PDMS), natural rubber, polystyrene-polybutadiene (PS-PB) copolymers, polymethylmethacrylate (PMMA), polystyrene-block-polymethylmethacrylate (PS-b-PMMA), acrylonitrile butadiene styrene (ABS), and epoxy resins.Type: ApplicationFiled: August 11, 2016Publication date: October 18, 2018Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Meng Qu, Agathe Robisson, Francois Auzerais, Shitong S. Zhu, Yucun Lou
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Publication number: 20170369708Abstract: Embodiments may generally take the form of a degradable composite structure and a method for controlling the rate of degradation of a degradable composite structure. An example embodiment may take the form of a degradable polymer matrix composite (PMC) including a matrix having: a degradable polymer, a fiber reinforcement, and particulate fillers. The fiber loading is between approximately 10% to 70% by weight and the particulate loading is between approximately 5% to 60%.Type: ApplicationFiled: December 18, 2015Publication date: December 28, 2017Inventors: Philip Kokel, Shitong S. Zhu, Matthew Godfrey, Meng Qu, Jahir A. Pabon, Yucun Lou, Francois M. Auzerais, John David Rowatt, Roman Kats, Gauri Joshi, Miranda Amarante
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Publication number: 20170226847Abstract: Methods and apparatus of adjusting matrix acidizing procedures are disclosed. An example method includes determining parameters of a wellbore fluid during a matrix acidizing procedure using at least a first sensor and a second sensor. The parameters include velocity of the wellbore fluid and a temperature difference between the first sensor and the second sensor.Type: ApplicationFiled: August 11, 2015Publication date: August 10, 2017Inventors: Yucun LOU, Francois M. AUZERAIS, Elena BORISOVA, Tullio MOSCATO
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Publication number: 20170081942Abstract: Procedures include designing parameters for cementation jobs based upon the wellbore geometries and loading conditions. The cementation parameters such as Young's modulus are selected such that longitudinal crack propagation is inhibited. Procedures also include determining critical loading conditions for an already-cemented casing annulus based upon the specified cement properties and wellbore conditions. The critical loading conditions are determined such that longitudinal crack propagation in the cement is inhibited. Techniques are used to improve the friction coefficients between the casing and cement to inhibit longitudinal crack propagation. The treatments can include forming surface patterns that enhance friction and/or making the casing surface oleophopic and/or hydrophilic.Type: ApplicationFiled: September 17, 2015Publication date: March 23, 2017Inventors: Yucun Lou, Meng Qu
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Patent number: 9557315Abstract: Apparatus and methods for measuring confining pressure, axial strain and radial strain of zonal isolation materials are described. This information is useful for evaluating these materials and predicting seal performance and potential failures of these materials.Type: GrantFiled: July 29, 2013Date of Patent: January 31, 2017Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Roman Kats, Agathe Robisson, Simone Musso, Yucun Lou, Jeffrey Thomas
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Publication number: 20160130931Abstract: Systems and methods for evaluating cement in the annulus of a wellbore are provided. In one embodiment, the cement may be evaluated using a casing arrival measurement sensor that measures casing arrival signals resulting from firing a signal from a cement bond logging acoustic source. Signals other than casing arrival signals may be attenuated using grooves between the transmitter and receiver in the drill collar.Type: ApplicationFiled: November 10, 2014Publication date: May 12, 2016Inventors: Yucun Lou, Jahir Pabon
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Publication number: 20160032706Abstract: A method of performing a cementing operation with an expandable cement deployable into a wellbore penetrating a subterranean formation is provided. The method involves determining design parameters of a wellsite, determining at least one estimated eigenstrain of the expandable cement based on the design parameters, selecting the expandable cement based on the estimated eigenstrain, and validating the selected expandable cement by comparing the estimated eigenstrain with the empirical eigenstrain. The design parameters includes a minimum pre-stress of the wellbore sufficient to prevent creation of a microannulus in the wellbore. The estimated eigenstrain is sufficient to generate the determined minimum pre-stress.Type: ApplicationFiled: April 7, 2015Publication date: February 4, 2016Inventors: Soraya Bornaz, Yucun Lou, Brice Lecampion
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Publication number: 20150275617Abstract: A swellable packer including a tubular member and a swellable element. The tubular member is disposable on a mandrel configured to be deployed into a wellbore. The swellable element is disposed around the tubular member, and has a first region comprising a swellable material and a second region comprising a degradable or dissolvable material.Type: ApplicationFiled: March 26, 2014Publication date: October 1, 2015Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: YUCUN LOU, HUILIN TU
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Publication number: 20150027217Abstract: Apparatus and methods for measuring confining pressure, axial strain and radial strain of zonal isolation materials are described. This information is useful for evaluating these materials and predicting seal performance and potential failures of these materials.Type: ApplicationFiled: July 29, 2013Publication date: January 29, 2015Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: ROMAN KATS, AGATHE ROBISSON, SIMONE MUSSO, YUCUN LOU, JEFFREY THOMAS