Patents by Inventor Luke T. Perkins

Luke T. Perkins 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: 11887746
    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 22, 2021
    Date of Patent: January 30, 2024
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Luke T. Perkins, Christian Stoller, Peter Wraight
  • Publication number: 20220115157
    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: November 22, 2021
    Publication date: April 14, 2022
    Inventors: Luke T. Perkins, Christian Stoller, Peter Wraight
  • Patent number: 11189389
    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 22, 2019
    Date of Patent: November 30, 2021
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Luke T. Perkins, Christian Stoller, Peter Wraight
  • Publication number: 20200098485
    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: November 22, 2019
    Publication date: March 26, 2020
    Inventors: Luke T. Perkins, Christian Stoller, Peter Wraight
  • Patent number: 10490312
    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: April 13, 2018
    Date of Patent: November 26, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Luke T. Perkins, Christian Stoller, 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
  • 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
  • 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: 9915753
    Abstract: The present disclosure describes a neutron generator including an ion source that generates ions; a target that outputs neutrons when the ions impact the target; one or more power supplies that supply electrical power to the ion source and the target; and a control system. The control system determines one or more rules that describe relationships between operational parameters, useful life, reliability, neutron output, environment, and constraints of the neutron generators; determines one or more operational parameter setpoints based at least in part on the one or more rules; and instructs the one or more power supplies to adjust electrical power supplied to the ion source, the target, or both based at least in part on the one or more operational parameter setpoints.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: March 13, 2018
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Kevin Lee Hiles, Luke T. Perkins, Robert A. Adolph
  • Publication number: 20160320520
    Abstract: The present disclosure describes a neutron generator including an ion source that generates ions; a target that outputs neutrons when the ions impact the target; one or more power supplies that supply electrical power to the ion source and the target; and a control system. The control system determines one or more rules that describe relationships between operational parameters, useful life, reliability, neutron output, environment, and constraints of the neutron generators; determines one or more operational parameter setpoints based at least in part on the one or more rules; and instructs the one or more power supplies to adjust electrical power supplied to the ion source, the target, or both based at least in part on the one or more operational parameter setpoints.
    Type: Application
    Filed: December 19, 2014
    Publication date: November 3, 2016
    Inventors: Kevin Lee Hiles, Luke T. Perkins, Robert A. Adolph
  • Patent number: 9179535
    Abstract: A neutron generator includes a sealed envelope providing a low pressure environment for a gas of hydrogen isotope(s). One end of the envelope defines an ion source chamber. A target electrode is disposed at the other end of the envelope. An extraction electrode is spaced apart from the target electrode by an accelerating gap. The extraction electrode bounds the ion source chamber. An RF antenna is disposed external to the sealed envelope in the vicinity of the ion source chamber. The RF antenna is used to transmit time-varying electromagnetic fields within the ion source chamber for producing plasma therein. The extraction electrode operates at a positive high voltage potential and the target electrode operates at or near ground potential in order to provide an electric field gradient that accelerates ions of the plasma towards the target electrode to induce collisions of ions with target material, thereby causing fusion reactions that generate and emit neutrons from the target material.
    Type: Grant
    Filed: February 4, 2008
    Date of Patent: November 3, 2015
    Assignee: Schlumberger Technology Corporation
    Inventor: Luke T. Perkins
  • 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
  • Publication number: 20150181688
    Abstract: A neutron generator includes a sealed envelope providing a low pressure environment for a gas of hydrogen isotope(s). One end of the envelope defines an ion source chamber. A target electrode is disposed at the other end of the envelope. An extraction electrode is spaced apart from the target electrode by an accelerating gap. The extraction electrode bounds the ion source chamber. An RF antenna is disposed external to the sealed envelope in the vicinity of the ion source chamber. The RF antenna is used to transmit time-varying electromagnetic fields within the ion source chamber for producing plasma therein. The extraction electrode operates at a positive high voltage potential and the target electrode operates at or near ground potential in order to provide an electric field gradient that accelerates ions of the plasma towards the target electrode to induce collisions of ions with target material, thereby causing fusion reactions that generate and emit neutrons from the target material.
    Type: Application
    Filed: February 4, 2008
    Publication date: June 25, 2015
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: Luke T. Perkins
  • Patent number: 8594265
    Abstract: A method for operating a pulsed neutron generator includes adjusting a target current of the neutron generator to a preselected value. A parameter related to a neutron output of the neutron generator is measured. A target voltage of the neutron generator is adjusted to maintain the measured parameter within a predetermined range.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: November 26, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Luke T. Perkins, Peter Wraight, Wolfgang P. Ziegler, Robert A. Adolph
  • Publication number: 20130256522
    Abstract: A pulsed neutron generator includes a sealed tube. a gas reservoir is disposed in the sealed tube and includes an electrically heatable filament disposed within a porous, sintered getter. The getter includes dispersed particles of a thermally reversible hydride-adsorptive material therein. The dispersed particles have deuterium and/or tritium adsorbed on them. A gas ionizer disposed in the sealed tube. A target is disposed in the sealed tube. The target includes adsorbed deuterium and/or tritium therein.
    Type: Application
    Filed: March 28, 2012
    Publication date: October 3, 2013
    Inventors: Luke T. Perkins, Dylan Leber
  • Publication number: 20130208841
    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: November 15, 2010
    Publication date: August 15, 2013
    Inventors: Luke T. Perkins, Christian Stoller, Peter Wraight
  • Publication number: 20130208840
    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: Application
    Filed: November 15, 2010
    Publication date: August 15, 2013
    Inventors: Joel Lee Groves, Luke T. Perkins, Fabien Guizelin, Peter Wraight
  • Patent number: 8311186
    Abstract: A multi-directional dispenser cathode has a cathode body that supports a plurality of electron emitters which spanning open portions of the cathode body. Each electron emitter has an inward facing surface and an outward facing surface wherein the inward facing surfaces and an interior wall of the body define an interior volume that contains a heater. To selectively accelerate emitted electrons, an electrically distinct biasing electrode is in spaced relationship to the outward facing surface of each electron emitter and coupled to a biasing power supply effective to provide an intermittent positive voltage potential to the biasing electrode. The distinct biasing electrodes are provided with a positive voltage potential at different times thereby causing an intermittent burst of electrons. Among the applications for intermittent bursts of accelerated electrons are to generate radiation from a particle accelerator.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: November 13, 2012
    Assignee: Schlumberger Technology Corporation
    Inventor: Luke T. Perkins
  • Patent number: 8035321
    Abstract: An electron acceleration portion of a Betatron having a vacuum chamber with an interior wall spaced from an exterior wall with a main electron orbit located approximate to the exterior wall and the interior wall. An electron injector has an anode structured and arranged adjacent a wall selected from the group consisting of the interior wall and the exterior wall that is shaped so as to not impede the main electron orbit. There is at least one electron deflection plate disposed approximate an anode end of the anode and the main electron orbit. There can be two electron deflection plates spaced apart that form a gap of a width effective to receive emitted electrons from the electron injector. Such that, there is a voltage potential between the two electron deflection plates that is effective to deflect emitted electrons towards the main electron orbit.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: October 11, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Felix Chen, Christian Stoller, Olivier Philip, Luke T. Perkins
  • Publication number: 20110146972
    Abstract: A logging-while-drilling (LWD) tool includes a bottomhole assembly (BHA); an electronic device carried on the BHA; and a bunched wire contact providing an electrical connection between the electronic device and a electrical power source at the BHA. The bunched wire contact includes a plurality of wires each of which has sufficient capacity to provide the requisite electrical current for operation of the electronic device.
    Type: Application
    Filed: October 16, 2008
    Publication date: June 23, 2011
    Inventors: Loic Vide, Luke T. Perkins, James E. Fay