Patents by Inventor Paul Lefebvre

Paul Lefebvre 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).

  • Publication number: 20220228991
    Abstract: Devices and methods to perform Raman spectroscopy with a structured excitation profile to obtain a Raman excitation map. A device includes a broadband light source to emit a broadband light beam and excitation optics to disperse the broadband light beam to strike a sample as incident light according to a structured excitation profile. The device further includes analysis optics to collect scattered light scattered by the incident light striking the sample, block Rayleigh scatter from the collected scattered light in a manner complementary to the structured excitation profile, and direct Raman scatter from the collected scattered light to a sensor to generate a signal to form a Raman excitation map.
    Type: Application
    Filed: June 18, 2020
    Publication date: July 21, 2022
    Inventors: Paul FINNIE, Jacques LEFEBVRE
  • Publication number: 20210008657
    Abstract: Methods and apparatus to control the acoustic properties of optical cables used as in-well oil and gas probes for acoustic monitoring, such as distributed acoustic sensing (DAS). One example aspect provides a solid path for the acoustic wave to propagate from an outside armor layer of the cable to the sensing optical waveguide embedded therein. Another example aspect offers ways to spatially dispose the optical sensing elements to create response delays indicative of the propagation speed and/or direction of an acoustic wave. Yet another example aspect provides ways to utilize additional spectral interrogation to increase ultimate spatial resolution. Yet another example aspect provides ways to locally vary the acoustic properties along the length of the cable.
    Type: Application
    Filed: September 22, 2020
    Publication date: January 14, 2021
    Inventors: Andre R. VINCELETTE, Christopher S. BALDWIN, Paul LEFEBVRE, Hongbo LI, Domino TAVERNER, James R. DUNPHY
  • Patent number: 10843290
    Abstract: Methods and apparatus to control the acoustic properties of optical cables used as in-well oil and gas probes for acoustic monitoring, such as distributed acoustic sensing (DAS). One example aspect provides a solid path for the acoustic wave to propagate from an outside armor layer of the cable to the sensing optical waveguide embedded therein. Another example aspect offers ways to spatially dispose the optical sensing elements to create response delays indicative of the propagation speed and/or direction of an acoustic wave. Yet another example aspect provides ways to utilize additional spectral interrogation to increase ultimate spatial resolution. Yet another example aspect provides ways to locally vary the acoustic properties along the length of the cable.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: November 24, 2020
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: Andre R. Vincelette, Christopher S. Baldwin, Paul Lefebvre, Hongbo Li, Domino Taverner, James R. Dunphy
  • Patent number: 10837274
    Abstract: A sensor arrangement using an optical fiber and methodologies for performing an analysis of a subterranean formation, such as a subterranean formation containing a hydrocarbon based fluid. The sensor arrangement may be used to measure one or more physical parameters, such as temperature and/or pressure, at a multiplicity of locations in the subterranean reservoir. The sensor arrangement may comprise a sensor array comprising an elongated outer casing for insertion in the subterranean formation and into a fluid in the subterranean formation. The sensor array may comprise an optical fiber defining an optical path that links one or more temperature sensors and one or more pressure sensors and transports measurement data generated by the temperature and pressure sensors. A data processing system may be connected to the sensor array to receive measurements from the sensor array and to compute one or more values of a property of an extraction installation operating on the subterranean formation.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: November 17, 2020
    Assignee: WEATHERFORD CANADA LTD.
    Inventors: Andre R. Vincelette, Jason Scott Kiddy, John Niemczuk, Christopher S. Baldwin, Paul Lefebvre
  • Patent number: 10400579
    Abstract: A signal processing apparatus which has an input for receiving a signal conveying a response from first and second optical components to an optical excitation. The first and second optical components are in an optical sensor which is intended to be placed in a sensing zone. The sensing zone contains hydrogen susceptible to migrate into the optical sensor. The signal processing apparatus has a processing entity for processing the response from the first and second optical components to derive information on hydrogen concentration in the optical sensor.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: September 3, 2019
    Assignee: WEATHERFORD CANADA LTD.
    Inventors: André Vincelette, Paul Lefebvre, Jean-François Nadeu
  • Publication number: 20190226321
    Abstract: A sensor arrangement using an optical fiber and methodologies for performing an analysis of a subterranean formation, such as a subterranean formation containing a hydrocarbon based fluid. The sensor arrangement may be used to measure one or more physical parameters, such as temperature and/or pressure, at a multiplicity of locations in the subterranean reservoir. The sensor arrangement may comprise a sensor array comprising an elongated outer casing for insertion in the subterranean formation and into a fluid in the subterranean formation. The sensor array may comprise an optical fiber defining an optical path that links one or more temperature sensors and one or more pressure sensors and transports measurement data generated by the temperature and pressure sensors. A data processing system may be connected to the sensor array to receive measurements from the sensor array and to compute one or more values of a property of an extraction installation operating on the subterranean formation.
    Type: Application
    Filed: April 1, 2019
    Publication date: July 25, 2019
    Inventors: Andre R. VINCELETTE, Jason Scott KIDDY, John NIEMCZUK, Christopher S. BALDWIN, Paul LEFEBVRE
  • Patent number: 10285402
    Abstract: The present application relates to compositions comprising 4-chloroindole-3-acetic acid (4Cl-IAA) or an analogue thereof, or a combination of the latter, in acid, salt or ester form. For example, such compositions can be used to curb weeds.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: May 14, 2019
    Assignee: PREMIER TECH TECHNOLOGIES LTÉE
    Inventors: Pierre Talbot, Alain Bélanger, George Kanellos, Shaun Purcell, Paul Lefebvre, Geneviève Roy, Dominique Lequere
  • Publication number: 20190116724
    Abstract: A particulate material spreader for radially projecting granular material. The particulate material spreader comprises a hopper, a set of open wheels and a spreading assembly at least partially extending between the hopper and the set of open wheels. The spreading assembly is configured to radially project the particulate material through at least one wheel of the set of open wheels. The spreading assembly comprises a wheel axle extending between the open wheels and rotating along with the open wheels when the particulate material spreader is moved over a surface; a distribution shaft operatively connected to the wheel axle to rotate along therewith; and a distribution plate. The distribution plate is mounted to the distribution shaft, receives the particulate material from the hopper and radially projects the particulate material substantially through at least one wheel of the set of open wheels.
    Type: Application
    Filed: April 12, 2017
    Publication date: April 25, 2019
    Applicant: PREMIER TECH TECHNOLOGIES LTÉE
    Inventors: Paul LEFEBVRE, Robert CAYER, Rita BIELLO, Jérôme Frédéric BOUCHARD, Michel E. GUAY, Karine LANELIER-SAVARD, Benoit ORBAN, Francois GAUCHER, Manuel LÉVEILLÉ, Mario GAGNON, Pierre TALBOT
  • Patent number: 10246989
    Abstract: A sensor arrangement using an optical fiber and methodologies for performing an analysis of a subterranean formation, such as a subterranean formation containing a hydrocarbon based fluid. The sensor arrangement may be used to measure one or more physical parameters, such as temperature and/or pressure, at a multiplicity of locations in the subterranean reservoir. The sensor arrangement may comprise a sensor array comprising an elongated outer casing for insertion in the subterranean formation and into a fluid in the subterranean formation. The sensor array may comprise an optical fiber defining an optical path that links one or more temperature sensors and one or more pressure sensors and transports measurement data generated by the temperature and pressure sensors. A data processing system may be connected to the sensor array to receive measurements from the sensor array and to compute one or more values of a property of an extraction installation operating on the subterranean formation.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: April 2, 2019
    Assignee: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
    Inventors: Andre R. Vincelette, Jason S. Kiddy, John B. Niemczuk, Christopher S. Baldwin, Paul Lefebvre
  • Publication number: 20180087371
    Abstract: A sensor arrangement using an optical fiber and methodologies for performing an analysis of a subterranean formation, such as a subterranean formation containing a hydrocarbon based fluid. The sensor arrangement may be used to measure one or more physical parameters, such as temperature and/or pressure, at a multiplicity of locations in the subterranean reservoir. The sensor arrangement may comprise a sensor array comprising an elongated outer casing for insertion in the subterranean formation and into a fluid in the subterranean formation. The sensor array may comprise an optical fiber defining an optical path that links one or more temperature sensors and one or more pressure sensors and transports measurement data generated by the temperature and pressure sensors. A data processing system may be connected to the sensor array to receive measurements from the sensor array and to compute one or more values of a property of an extraction installation operating on the subterranean formation.
    Type: Application
    Filed: August 11, 2017
    Publication date: March 29, 2018
    Inventors: Andre R. VINCELETTE, Jason S. KIDDY, John B. NIEMCZUK, Christopher S. BALDWIN, Paul LEFEBVRE
  • Publication number: 20170258086
    Abstract: The present application relates to compositions comprising 4-chloroindole-3-acetic acid (4CI-AA) or an analogue thereof, or a combination of the latter, in acid, salt or ester form. For example, such compositions can be used to curb weeds.
    Type: Application
    Filed: September 15, 2015
    Publication date: September 14, 2017
    Inventors: Pierre TALBOT, Alain BÉLANGER, George KANELLOS, Shaun PURCELL, Paul LEFEBVRE, Geneviève ROY, Dominique LEQUERE
  • Publication number: 20160245071
    Abstract: A sensor arrangement using an optical fiber and methodologies for performing an analysis of a subterranean formation, such as a subterranean formation containing a hydrocarbon based fluid. The sensor arrangement may be used to measure one or more physical parameters, such as temperature and/or pressure, at a multiplicity of locations in the subterranean reservoir. The sensor arrangement may comprise a sensor array comprising an elongated outer casing for insertion in the subterranean formation and into a fluid in the subterranean formation. The sensor array may comprise an optical fiber defining an optical path that links one or more temperature sensors and one or more pressure sensors and transports measurement data generated by the temperature and pressure sensors. A data processing system may be connected to the sensor array to receive measurements from the sensor array and to compute one or more values of a property of an extraction installation operating on the subterranean formation.
    Type: Application
    Filed: May 5, 2016
    Publication date: August 25, 2016
    Inventors: Andre R. VINCELETTE, Jason S. KIDDY, John B. NIEMCZUK, Christopher S. BALDWIN, Paul LEFEBVRE
  • Publication number: 20160209584
    Abstract: Methods and apparatus to control the acoustic properties of optical cables used as in-well oil and gas probes for acoustic monitoring, such as distributed acoustic sensing (DAS). One example aspect provides a solid path for the acoustic wave to propagate from an outside armor layer of the cable to the sensing optical waveguide embedded therein. Another example aspect offers ways to spatially dispose the optical sensing elements to create response delays indicative of the propagation speed and/or direction of an acoustic wave. Yet another example aspect provides ways to utilize additional spectral interrogation to increase ultimate spatial resolution. Yet another example aspect provides ways to locally vary the acoustic properties along the length of the cable.
    Type: Application
    Filed: January 13, 2016
    Publication date: July 21, 2016
    Inventors: Andre R. VINCELETTE, Christopher S. BALDWIN, Paul LEFEBVRE, Hongbo LI, Domino TAVERNER, James R. DUNPHY
  • Patent number: 9347312
    Abstract: A sensor arrangement using an optical fiber and methodologies for performing an analysis of a subterranean formation, such as a subterranean formation containing a hydrocarbon based fluid. The sensor arrangement may be used to measure one or more physical parameters, such as temperature and/or pressure, at a multiplicity of locations in the subterranean reservoir. The sensor arrangement may comprise a sensor array comprising an elongated outer casing for insertion in the subterranean formation and into a fluid in the subterranean formation. The sensor array may comprise an optical fiber defining an optical path that links one or more temperature sensors and one or more pressure sensors and transports measurement data generated by the temperature and pressure sensors. A data processing system may be connected to the sensor array to receive measurements from the sensor array and to compute one or more values of a property of an extraction installation operating on the subterranean formation.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: May 24, 2016
    Assignee: WEATHERFORD CANADA PARTNERSHIP
    Inventors: Andre R. Vincelette, Jason S. Kiddy, John B. Niemczuk, Christopher S. Baldwin, Paul Lefebvre
  • Patent number: 9341778
    Abstract: An optical fiber cable for installation in a subterranean formation, where the temperature could be in excess of 150 degrees C. The optical fiber cable has an outer metallic jacket defining an elongated conduit with an internal elongated channel that receives an optical fiber. The optical fiber has two strands joined by a splice. A splice protector has a body with a passageway receiving the splice. The body has an outer region configured to be joined by a fusion weld to the outer metallic jacket.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: May 17, 2016
    Assignee: WEATHERFORD CANADA PARTNERSHIP
    Inventors: Corneliu V. Ducra, Remi Charbonneau, Paul Lefebvre, Andre Vincelette
  • Publication number: 20150131950
    Abstract: An optical fiber cable for installation in a subterranean formation, where the temperature could be in excess of 150 degrees C. The optical fiber cable has an outer metallic jacket defining an elongated conduit with an internal elongated channel that receives an optical fiber. The optical fiber has two strands joined by a splice. A splice protector has a body with a passageway receiving the splice. The body has an outer region configured to be joined by a fusion weld to the outer metallic jacket.
    Type: Application
    Filed: November 8, 2013
    Publication date: May 14, 2015
    Inventors: Corneliu V. DUCRA, Remi CHARBONNEAU, Paul LEFEBVRE, Andre VINCELETTE
  • Publication number: 20130206571
    Abstract: The present invention concerns low energy requiring methods for processing low cellulosic biomass materials into oil, char and liquid components. One method comprises the steps of subjecting the biomass to hydrothermal carbonization under specified reaction conditions for producing a combined char and oil fraction as well as an aqueous fraction, separating the combined oil and char fraction from the aqueous fraction by filtration; separating the combined oil and char fraction into individual oil and char fractions using an organic solvent for forming an oil depleted char fraction and a liquid oil and solvent solution, and separating the liquid oil and solvent solution into individual oil and solvent fractions by distillation.
    Type: Application
    Filed: May 12, 2011
    Publication date: August 15, 2013
    Inventors: Steven M. Heilmann, Kenneth J. Valentas, Marc Von Keitz, Frederick J. Schendel, Paul A. Lefebvre, Michael J. Sadowsky, Laurie A. Harned, Lindsey R. Jader
  • Patent number: 8414664
    Abstract: Algae-derived synthetic coal and filtrates. The invention described herein provides an algae-derived synthetic coal product and filtrates and process for preparing the same using an improved hydrothermal carbonization process. The synthetic coal product is similar to natural bituminous coal in terms of percent carbon content and energy equivalency while at the same time containing relatively low levels of sulfur and contaminant heavy metals. Unlike natural coal and other fossil fuels, because the carbon of the biomass is formed through photosynthesis, carbon dioxide formed during combustion is a “carbon neutral” event with little or no “new” carbon dioxide being added to the earth's atmosphere. The algae-derived filtrates contain useful constituents.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: April 9, 2013
    Assignee: HydoChar LLC
    Inventors: Steven M. Heilmann, Kenneth J. Valentas, Marc von Keitz, Frederick J. Schendel, Paul A. Lefebvre, Michael J. Sadowsky
  • Publication number: 20110229071
    Abstract: A sensor arrangement using an optical fiber and methodologies for performing an analysis of a subterranean formation, such as a subterranean formation containing a hydrocarbon based fluid. The sensor arrangement may be used to measure one or more physical parameters, such as temperature and/or pressure, at a multiplicity of locations in the subterranean reservoir. The sensor arrangement may comprise a sensor array comprising an elongated outer casing for insertion in the subterranean formation and into a fluid in the subterranean formation. The sensor array may comprise an optical fiber defining an optical path that links one or more temperature sensors and one or more pressure sensors and transports measurement data generated by the temperature and pressure sensors. A data processing system may be connected to the sensor array to receive measurements from the sensor array and to compute one or more values of a property of an extraction installation operating on the subterranean formation.
    Type: Application
    Filed: April 22, 2010
    Publication date: September 22, 2011
    Applicant: LXDATA INC.
    Inventors: Andre R. Vincelette, Jason S. Kiddy, John B. Niemczuk, Christopher S. Baldwin, Paul Lefebvre
  • Patent number: D856765
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: August 20, 2019
    Assignee: PREMIER TECH TECHNOLOGIES LTÉE
    Inventors: Paul Lefebvre, Robert Cayer, Rita Biello, Jérôme Frédéric Bouchard, Michel E. Guay, Karine Langelier-Savard, Benoît Orban, François Gaucher, Manuel Léveillé, Mario Gagnon, Pierre Talbot