Patents by Inventor Peter Wraight

Peter Wraight 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).

  • Patent number: 10271417
    Abstract: Systems, methods, and apparatuses to identify functional issues of a neutron radiation generator are described. In certain aspects, a method includes receiving an operation extractor signal from an extractor electrode of a radiation generator, determining a calculated extractor signal of the radiation generator, and comparing the operation extractor signal to the calculated extractor signal. The calculated extractor signal may be determined from an operation acceleration signal from an acceleration member of the radiation generator, an operation electron beam signal from electrons backstreaming in the radiation generator, an ion signal of an ion beam of the radiation generator, or a combination thereof.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: April 23, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Joel L. Groves, Peter Wraight
  • Patent number: 10229765
    Abstract: Various embodiments for shortening the overall length of a pulsed neutron generator having a high voltage power supply are disclosed, including but not limited to, providing the plurality of stages of a high voltage power supply wrapped circumferentially or helically about a radiation generator tube. Various techniques for reducing voltage differentials and mitigating the risk of arcing in these embodiments are also disclosed.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: March 12, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Joel Lee Groves, Luke T. Perkins, Fabien Guizelin, Peter Wraight
  • Patent number: 10174608
    Abstract: An installation for intervention in a well, comprises a lower assembly comprising a neutron generator and a power source electrically connected to the neutron generator; a surface assembly comprising one or more safety devices, each safety device being either in a safe state or an unsafe state; and a communication module that connects the lower and surface assemblies. The surface assembly also comprises a surface transmitting device for transmitting data to the downhole assembly via the communication module including a first transmitter for transmitting an activating command, where the first transmitter transmits the activating command only if each of the safety device is in a safe state, and a second transmitter for transmitting a stopping command, where the second transmitter transmits the stopping command if one of the safety device is in an unsafe state.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: January 8, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Vincent Chatelet, Axel Quignard, Peter Wraight, Jean-Pierre Poyet, Fabien Nibodeau, Luke Perkins
  • Publication number: 20180261349
    Abstract: Disclosed is a radiation logging tool, comprising a tool housing; a compact generator that produces radiation; a power supply coupled to the compact generator; and control circuitry. Embodiments of the compact generator comprise a generator vacuum tube comprising a source generating charged particles, and a target onto which the charged particles are directed; and a high voltage supply comprising a high voltage multiplier ladder located laterally adjacent to the generator vacuum tube. The high voltage supply applies a high voltage between the source and the target to accelerate the charged particles to a predetermined energy level. The compact generator also includes an electrical coupling between an output of the high voltage supply and the target of the generator vacuum tube to accommodate the collocated positions of the generator vacuum tube and the high voltage power supply.
    Type: Application
    Filed: April 13, 2018
    Publication date: September 13, 2018
    Inventors: Luke T. Perkins, Christian Stoller, Peter Wraight
  • Publication number: 20180210095
    Abstract: A scintillator type radiation detector package is provided including a scintillation crystal directly coupled to the window of a photomultiplier. A scintillator package is also provided having a longer life at wellbore temperature with minimal deterioration of a hygroscopic scintillation crystal(s). Direct optical coupling of the scintillator to the photomultiplier reduces the amount of light lost at coupling interfaces and improved detection resolution over the conventional structures having separate packages for crystal and photomultiplier.
    Type: Application
    Filed: January 5, 2018
    Publication date: July 26, 2018
    Inventors: Ken Stephenson, Peter Wraight, Wolfgang Ziegler, John J. Simonetti, Christian Stoller, Irina Molodetsky
  • Patent number: 9947426
    Abstract: Disclosed is a radiation logging tool, comprising a tool housing; a compact generator that produces radiation; a power supply coupled to the compact generator; and control circuitry. Embodiments of the compact generator comprise a generator vacuum tube comprising a source generating charged particles, and a target onto which the charged particles are directed; and a high voltage supply comprising a high voltage multiplier ladder located laterally adjacent to the generator vacuum tube. The high voltage supply applies a high voltage between the source and the target to accelerate the charged particles to a predetermined energy level. The compact generator also includes an electrical coupling between an output of the high voltage supply and the target of the generator vacuum tube to accommodate the collocated positions of the generator vacuum tube and the high voltage power supply.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: April 17, 2018
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Luke T. Perkins, Christian Stoller, Peter Wraight
  • Patent number: 9880295
    Abstract: A scintillator type radiation detector package is provided including a scintillation crystal directly coupled to the window of a photomultiplier. A scintillator package is also provided having a longer life at wellbore temperature with minimal deterioration of a hygroscopic scintillation crystal(s). Direct optical coupling of the scintillator to the photomultiplier reduces the amount of light lost at coupling interfaces and improved detection resolution over the conventional structures having separate packages for crystal and photomultiplier.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: January 30, 2018
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Ken Stephenson, Peter Wraight, Wolfgang Ziegler, Christian Stoller, Irina Molodetsky, John J. Simonetti, Donna Simonetti
  • Publication number: 20170226848
    Abstract: An installation for intervention in a well, comprises a lower assembly comprising a neutron generator and a power source electrically connected to the neutron generator; a surface assembly comprising one or more safety devices, each safety device being either in a safe state or an unsafe state; and a communication module that connects the lower and surface assemblies. The surface assembly also comprises a surface transmitting device for transmitting data to the downhole assembly via the communication module including a first transmitter for transmitting an activating command, where the first transmitter transmits the activating command only if each of the safety device is in a safe state, and a second transmitter for transmitting a stopping command, where the second transmitter transmits the stopping command if one of the safety device is in an unsafe state.
    Type: Application
    Filed: July 31, 2015
    Publication date: August 10, 2017
    Inventors: Vincent Chatelet, Axel Quignard, Peter Wraight, Jean-Pierre Poyet, Fabien Nibodeau, Luke Perkins
  • Publication number: 20160306070
    Abstract: Logging-while-drilling tools incorporating an electronic radiation generator, such as an electronic X-ray generator, and a method for using the same are provided. One example of such a logging-while-drilling tool may include a circumferential drill collar, a chassis disposed radially interior to the drill collar, and an electronic X-ray generator and an X-ray detector disposed within the chassis. The electronic X-ray generator may emit X-rays out of the logging-while-drilling tool into a subterranean formation. The X-ray detector may detect X-rays that return to the logging-while-drilling tool after scattering in the subterranean formation, which may be used to determine a density and/or a lithology of the subterranean formation.
    Type: Application
    Filed: June 27, 2016
    Publication date: October 20, 2016
    Inventors: Matthieu Simon, Peter Wraight, Christian Stoller, Kenneth E. Stephenson, Andrew Bazarko
  • Patent number: 9470817
    Abstract: Systems, methods, and apparatuses to determine an operation gas pressure in a neutron radiation generator are described. In certain aspects, a method to determine the operation gas pressure includes receiving an operation radiation signal from a radiation generated by electrons backstreaming in a radiation generator, and determining from the operation radiation signal an operation gas pressure in a chamber of the radiation generator. An operation radiation signal may be received from a radiation detector associated with a neutron radiation generator. A radiation detector may detect radiation produced by particles (e.g., electrons) striking a portion (e.g., a cathode) of the neutron radiation generator.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: October 18, 2016
    Assignee: Schlumberger Technology Corporation
    Inventors: Joel L. Groves, Peter Wraight
  • Patent number: 9394781
    Abstract: Logging-while-drilling tools incorporating an electronic radiation generator, such as an electronic X-ray generator, and a method for using the same are provided. One example of such a logging-while-drilling tool may include a circumferential drill collar, a chassis disposed radially interior to the drill collar, and an electronic X-ray generator and an X-ray detector disposed within the chassis. The electronic X-ray generator may emit X-rays out of the logging-while-drilling tool into a subterranean formation. The X-ray detector may detect X-rays that return to the logging-while-drilling tool after scattering in the subterranean formation, which may be used to determine a density and/or a lithology of the subterranean formation.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: July 19, 2016
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Matthieu Simon, Peter Wraight, Christian Stoller, Kenneth E. Stephenson, Andrew Bazarko
  • Patent number: 9372277
    Abstract: Systems and methods for neutron porosity well logging with high precision and reduced lithology effects are provided. In accordance with an embodiment, a downhole neutron porosity tool may include a neutron source, a neutron monitor, a neutron detector, and data processing circuitry. The neutron source may emit neutrons into a subterranean formation while the neutron monitor detects a count of neutrons proportional to the neutrons emitted. The neutron detector may detect a count of neutrons that scatters off the subterranean formation. The data processing circuitry may determine an environmentally corrected porosity of the subterranean formation based at least in part on the count rate of neutrons scattered off the subterranean formation normalized to the count rate of neutrons proportional to the neutrons emitted by the neutron source.
    Type: Grant
    Filed: April 21, 2010
    Date of Patent: June 21, 2016
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Peter Wraight, James Thornton, Bradley A. Roscoe
  • Publication number: 20160143123
    Abstract: Systems, methods, and apparatuses to identify functional issues of a neutron radiation generator are described. In certain aspects, a method includes receiving an operation extractor signal from an extractor electrode of a radiation generator, determining a calculated extractor signal of the radiation generator, and comparing the operation extractor signal to the calculated extractor signal. The calculated extractor signal may be determined from an operation acceleration signal from an acceleration member of the radiation generator, an operation electron beam signal from electrons backstreaming in the radiation generator, an ion signal of an ion beam of the radiation generator, or a combination thereof.
    Type: Application
    Filed: November 17, 2014
    Publication date: May 19, 2016
    Inventors: Joel L. Groves, Peter Wraight
  • Publication number: 20160139294
    Abstract: Systems, methods, and apparatuses to determine an operation gas pressure in a neutron radiation generator are described. In certain aspects, a method to determine the operation gas pressure includes receiving an operation radiation signal from a radiation generated by electrons backstreaming in a radiation generator, and determining from the operation radiation signal an operation gas pressure in a chamber of the radiation generator. An operation radiation signal may be received from a radiation detector associated with a neutron radiation generator. A radiation detector may detect radiation produced by particles (e.g., electrons) striking a portion (e.g., a cathode) of the neutron radiation generator.
    Type: Application
    Filed: November 17, 2014
    Publication date: May 19, 2016
    Inventors: Joel L. Groves, Peter Wraight
  • Patent number: 9234980
    Abstract: The present invention provides systems and methods capable of improving the efficiency and effectiveness of leaching operations. In one embodiment, the present invention may utilize a coiled tubing directional drilling system capable of treating interior portions of the heap/formation. In one embodiment, the present invention may utilize a system and method capable of capturing real time temperature and resistivity data pertaining to pregnant solution characteristics in the heap/formation. In one embodiment, the present invention may utilize one or more wire line deployed X-Ray Fluorescence (XRF) spectrometers capable of quantitatively measuring concentrations of desired metals in the heap/formation during leaching operations. In one embodiment, the present invention utilizes multiple passes of elemental capture spectroscopy logs acquired at regular time intervals to monitor metal concentrations during leaching operations.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: January 12, 2016
    Assignee: Schlumberger Technology Corporation
    Inventors: Gilles Mathieu, Kent Lang, Peter Wraight, Roland Banas, James A. Grau, Edward Clayton
  • Publication number: 20150362618
    Abstract: A method includes emitting a burst of neutrons having a first duration into earth formations. Neutrons are detected at a first position spaced apart from the emitting in two time intervals following the burst. After a selected delay time, a second duration neutron burst is emitted into the formations. Gamma rays are detected in selected time intervals following the second burst. The detected neutrons in the two time intervals are used to calculate a thermal neutron capture cross section. Gamma rays detected at the first position in following the second duration burst are used to determine an apparent formation thermal neutron capture cross section and to adjust a time interval for each of the first duration, the second duration and the starting time thereof for detecting gamma rays. The estimated wellbore thermal neutron capture cross section is used to determine an apparent formation thermal neutron capture cross section.
    Type: Application
    Filed: June 12, 2014
    Publication date: December 17, 2015
    Inventor: Peter Wraight
  • Patent number: 9184019
    Abstract: An ion source for use in a radiation generator includes an active cathode configured to emit electrons on a trajectory away from the active cathode, at least some of the electrons as they travel interacting with an ionizable gas to produce ions. In addition, there is at least one extractor downstream of the active cathode having a potential such that the ions are attracted toward the at least one extractor.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: November 10, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Luke Perkins, Benjamin Levitt, Peter Wraight, Arthur D. Liberman
  • Patent number: 9155185
    Abstract: Systems, methods, and devices with improved electrode configuration for downhole nuclear radiation generators are provided. For example, one embodiment of a nuclear radiation generator capable of downhole operation may include a charged particle source, a target material, and an acceleration column between the charged particle source and the target material. The acceleration column may include several electrodes shaped such that substantially no electrode material from the electrodes is sputtered onto an insulator surface of the acceleration column during normal downhole operation.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: October 6, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Jani Reijonen, Luke T. Perkins, Frederic Gicquiel, Christian Stoller, Peter Wraight
  • Patent number: 9129770
    Abstract: An ion source for use in a radiation generator includes a sealed envelope containing an ionizable gas therein. The ion source also includes a RF antenna external to the sealed envelope, the RF antenna to transmit time-varying electromagnetic fields within the sealed envelope for producing ions from the ionizable gas. There is at least one extractor within the sealed envelope having a potential such that the ions are attracted toward the at least one extractor.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: September 8, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Luke Perkins, Benjamin Levitt, Peter Wraight, Arthur D. Liberman
  • Patent number: 9105436
    Abstract: A method of generating ions in a radiation generator includes emitting electrons from an active cathode and on a trajectory away from the active cathode, at least some of the electrons as they travel interacting with an ionizable gas to produce ions. The method also includes setting a potential of at least one extractor downstream of the active cathode such that the ions are attracted toward the at least one extractor.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: August 11, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Luke Perkins, Benjamin Levitt, Peter Wraight, Arthur D. Liberman