Patents by Inventor Marie Laure Mauborgne

Marie Laure Mauborgne 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: 20210270994
    Abstract: A method for making natural gamma ray measurements includes deploying a logging while drilling tool including an electrical neutron output of the electrical neutron source is modulated and the natural gamma ray sensor is used to make a corresponding gamma ray measurement during at least a portion of the modulation. The gamma ray measurement is processed to obtain a corrected total natural gamma ray measurement of the subterranean formation.
    Type: Application
    Filed: July 5, 2019
    Publication date: September 2, 2021
    Inventors: Fabien Haranger, Marie-Laure Mauborgne
  • Publication number: 20210230954
    Abstract: A method for making natural gamma ray measurements of a subterranean formation includes causing a natural gamma ray sensor on an LWD tool to acquire a spectral gamma ray measurement while a neutron source emits neutrons. The measurements are evaluated to compute first and second drilling fluid activation corrections using corresponding first and second correction methodologies. The first and second corrections are processed to compute a third drilling fluid activation correction which is applied to the gamma ray measurements to compute a corrected total natural gamma ray measurement.
    Type: Application
    Filed: July 8, 2019
    Publication date: July 29, 2021
    Inventors: Marie-Laure Mauborgne, Christian Stoller
  • Patent number: 10852283
    Abstract: A system that may identify when a pulsed neutron generator is operating while disposed in an undesirable environment, such as in air, may include a pulsed neutron generator designed to emit neutrons in an environment. The system may also include a radiation detector designed to take measurements of the neutrons. The system may also include data processing circuitry designed to determine if the environment surrounding the pulsed neutron generator is air based at least in part on a neutron signal obtained by the radiation detector. The determination may include comparing one or more characteristics of the neutron signal with corresponding reference characteristics.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: December 1, 2020
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Marie-Laure Mauborgne, Francoise Allioli, Mauro Manclossi, Luisa Nicoletti
  • Patent number: 10690802
    Abstract: A method for evaluating cement in a cased wellbore in a geological formation includes placing a downhole tool into the cased wellbore, where the cased wellbore has been cased using a cement that contains a particular material. The method includes emitting neutrons using the downhole tool, wherein the neutrons interact with the particular material via inelastic scattering or capture of neutrons and cause the material to emit an energy spectrum of the gamma rays associated with the material or wherein the time-based measurement of gamma rays or neutrons is influenced by the presence of the material. The method includes using the downhole tool to detect radiation radiation, such as the energy spectrum of the gamma rays, or a die-away pattern of the gamma rays or neutrons that indicates a presence of the particular material and enable to estimate a parameter of the cement.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: June 23, 2020
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Christian Stoller, Alice Chougnet-Sirapian, Mauro Manclossi, Marie-Laure Mauborgne
  • Publication number: 20190187116
    Abstract: A system that may identify when a pulsed neutron generator is operating while disposed in an undesirable environment, such as in air, may include a pulsed neutron generator designed to emit neutrons in an environment. The system may also include a radiation detector designed to take measurements of the neutrons. The system may also include data processing circuitry designed to determine if the environment surrounding the pulsed neutron generator is air based at least in part on a neutron signal obtained by the radiation detector. The determination may include comparing one or more characteristics of the neutron signal with corresponding reference characteristics.
    Type: Application
    Filed: December 14, 2017
    Publication date: June 20, 2019
    Inventors: Marie-Laure Mauborgne, Francoise Allioli, Mauro Manclossi, Luisa Nicoletti
  • Patent number: 10317568
    Abstract: The disclosure relates to a method for correcting a downhole natural gamma-ray measurement performed in a wellbore. A gamma-ray measurement including at least a gamma-ray count rate is obtained by a gamma-ray detector disposed in a bottom hole assembly having a mud channel inside of the assembly, such that mud flows downwards in the mud channel and upwards outside of the assembly and a neutron source situated above the gamma-ray detector and activating the mud.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: June 11, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Marie-Laure Mauborgne, Francoise Allioli, Fabien Haranger, Christian Stoller
  • Publication number: 20190033484
    Abstract: A method for evaluating cement in a cased wellbore in a geological formation includes placing a downhole tool into the cased wellbore, where the cased wellbore has been cased using a cement that contains a particular material. The method includes emitting neutrons using the downhole tool, wherein the neutrons interact with the particular material via inelastic scattering or capture of neutrons and cause the material to emit an energy spectrum of the gamma rays associated with the material or wherein the time-based measurement of gamma rays or neutrons is influenced by the presence of the material. The method includes using the downhole tool to detect radiation radiation, such as the energy spectrum of the gamma rays, or a die-away pattern of the gamma rays or neutrons that indicates a presence of the particular material and enable to estimate a parameter of the cement.
    Type: Application
    Filed: July 25, 2017
    Publication date: January 31, 2019
    Inventors: Christian Stoller, Alice Chougnet - Sirapian, Mauro Manclossi, Marie-Laure Mauborgne
  • Patent number: 9897718
    Abstract: Methods and downhole tools involving neutron-absorbing gamma ray windows are provided. One such method involves emitting neutrons from a neutron source in a downhole tool in a well into a surrounding geological formation. This may produce formation gamma rays through interactions between the neutrons and elements of the geological formation. The formation gamma rays may be detected by a gamma ray detector when the gamma rays pass via a gamma ray window that includes a neutron-absorbing material disposed in a substrate material of the downhole tool. The gamma ray window may be both more transmissive of gamma rays than the substrate material and less transmissive of neutrons than a window without the neutron-absorbing material. This may decrease a neutron flux that would otherwise reach the gamma ray detector and the tool materials surrounding it and thus would otherwise lead to a background signal contaminating a signal corresponding to the detected formation gamma rays.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: February 20, 2018
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Marie-Laure Mauborgne, Ahmed Amine Mahjoub, Markus Berheide, Christian Stoller
  • Publication number: 20170363770
    Abstract: The disclosure relates to a method for correcting a downhole natural gamma-ray measurement performed in a wellbore. A gamma-ray measurement including at least a gamma-ray count rate is obtained by a gamma-ray detector disposed in a bottom hole assembly having a mud channel inside of the assembly, such that mud flows downwards in the mud channel and upwards outside of the assembly and a neutron source situated above the gamma-ray detector and activating the mud.
    Type: Application
    Filed: June 15, 2016
    Publication date: December 21, 2017
    Inventors: Marie-Laure Mauborgne, Francoise Allioli, Fabien Haranger, Christian Stoller
  • Publication number: 20160320521
    Abstract: Methods and downhole tools involving neutron-absorbing gamma ray windows are provided. One such method involves emitting neutrons from a neutron source in a downhole tool in a well into a surrounding geological formation. This may produce formation gamma rays through interactions between the neutrons and elements of the geological formation. The formation gamma rays may be detected by a gamma ray detector when the gamma rays pass via a gamma ray window that includes a neutron-absorbing material disposed in a substrate material of the downhole tool. The gamma ray window may be both more transmissive of gamma rays than the substrate material and less transmissive of neutrons than a window without the neutron-absorbing material. This may decrease a neutron flux that would otherwise reach the gamma ray detector and the tool materials surrounding it and thus would otherwise lead to a background signal contaminating a signal corresponding to the detected formation gamma rays.
    Type: Application
    Filed: December 17, 2014
    Publication date: November 3, 2016
    Applicant: Schlumberger Technology Corporation
    Inventors: Marie-Laure Mauborgne, Ahmed Amine Mahjoub, Markus Berheide, Christian Stoller
  • Publication number: 20160047941
    Abstract: Methods and apparatus for obtaining neutron population data of a subterranean formation with a downhole tool proximate the subterranean formation in a wellbore extending from a wellsite surface to the formation, wherein surface equipment is located at the wellsite surface. At least one of the downhole tool and the surface equipment is operated to generate a sigma log, determine moment data from the generated sigma log, determine a real quality control factor based on the determined moment data, and determine a theoretical quality control factor based on the generated sigma log. Comparing the determined real and theoretical quality control factors may then be utilized to assess accuracy of the generated sigma log.
    Type: Application
    Filed: March 25, 2014
    Publication date: February 18, 2016
    Inventors: Marie-Laure Mauborgne, Francoise Allioli
  • Patent number: 8868346
    Abstract: Systems, methods, and devices are provided to determine an accurate neutron-gamma density (NGD) measurement for a broad range of formations, including low-hydrogen-index or low-porosity formations and formations with heavy elements. For example, such an NGD measurement may be obtained by emitting neutrons into a formation such that some of the neutrons inelastically scatter off elements of the formation and generate inelastic gamma rays. The neutrons and inelastic gamma rays that return to the downhole tool may be detected. Some characteristics of certain formations are believed to affect the fast neutron transport of the formations. Thus, if a formation has one or more of such characteristics, a correction may be applied to the count rate of neutrons, the count rate of inelastic gamma rays, or the neutron transport correction function, upon which the neutron-gamma density (NGD) may be determined.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: October 21, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Michael Evans, Marie-Laure Mauborgne
  • Patent number: 8521435
    Abstract: The present disclosure relates to a method to determine the capture cross-section of a subsurface formation at a desired depth in the formation. A database of Sigma values for known lithologies, porosities, and salinities is provided, and multiple Sigma measurements are obtained from a downhole logging tool. Within the database, Sigma values are interpolated to determine the respective depths of investigation of the multiple Sigma measurements. A monotonic function is fitted to the multiple Sigma measurements at the determined depths of investigation, and the capture cross-section of the subsurface formation at any desired depth in the formation is determined using the fitted function. Similarly, a system to determine the capture cross-section of a subsurface formation at a desired depth in the formation and/or a depth of invasion of drilling fluids is also disclosed.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: August 27, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Chanh Cao Minh, Marie Laure Mauborgne, Roger Griffiths, Darwin Ellis
  • Publication number: 20120016588
    Abstract: Systems, methods, and devices are provided to determine an accurate neutron-gamma density (NGD) measurement for a broad range of formations, including low-hydrogen-index or low-porosity formations and formations with heavy elements. For example, such an NGD measurement may be obtained by emitting neutrons into a formation such that some of the neutrons inelastically scatter off elements of the formation and generate inelastic gamma rays. The neutrons and inelastic gamma rays that return to the downhole tool may be detected. Some characteristics of certain formations are believed to affect the fast neutron transport of the formations. Thus, if a formation has one or more of such characteristics, a correction may be applied to the count rate of neutrons, the count rate of inelastic gamma rays, or the neutron transport correction function, upon which the neutron-gamma density (NGD) may be determined.
    Type: Application
    Filed: July 13, 2011
    Publication date: January 19, 2012
    Applicant: Schlumberger Technology Corporation
    Inventors: Michael Evans, Marie-Laure Mauborgne
  • Publication number: 20110004408
    Abstract: The present disclosure relates to a method to determine the capture cross-section of a subsurface formation at a desired depth in the formation. A database of Sigma values for known lithologies, porosities, and salinities is provided, and multiple Sigma measurements are obtained from a downhole logging tool. Within the database, Sigma values are interpolated to determine the respective depths of investigation of the multiple Sigma measurements. A monotonic function is fitted to the multiple Sigma measurements at the determined depths of investigation, and the capture cross-section of the subsurface formation at any desired depth in the formation is determined using the fitted function. Similarly, a system to determine the capture cross-section of a subsurface formation at a desired depth in the formation and/or a depth of invasion of drilling fluids is also disclosed.
    Type: Application
    Filed: June 9, 2010
    Publication date: January 6, 2011
    Inventors: Chanh Cao Minh, Marie Laure Mauborgne, Roger Griffiths, Darwin Ellis