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).
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Patent number: 11887746Abstract: 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: GrantFiled: November 22, 2021Date of Patent: January 30, 2024Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Luke T. Perkins, Christian Stoller, Peter Wraight
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Publication number: 20220115157Abstract: 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: ApplicationFiled: November 22, 2021Publication date: April 14, 2022Inventors: Luke T. Perkins, Christian Stoller, Peter Wraight
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Patent number: 11189389Abstract: 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: GrantFiled: November 22, 2019Date of Patent: November 30, 2021Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Luke T. Perkins, Christian Stoller, Peter Wraight
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Publication number: 20200098485Abstract: 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: ApplicationFiled: November 22, 2019Publication date: March 26, 2020Inventors: Luke T. Perkins, Christian Stoller, Peter Wraight
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Patent number: 10490312Abstract: 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: GrantFiled: April 13, 2018Date of Patent: November 26, 2019Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Luke T. Perkins, Christian Stoller, Peter Wraight
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Patent number: 10436918Abstract: 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: GrantFiled: January 5, 2018Date of Patent: October 8, 2019Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Ken Stephenson, Peter Wraight, Wolfgang Ziegler, John J. Simonetti, Christian Stoller, Irina Molodetsky
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Patent number: 10271417Abstract: 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: GrantFiled: November 17, 2014Date of Patent: April 23, 2019Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Joel L. Groves, Peter Wraight
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Patent number: 10229765Abstract: 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: GrantFiled: November 15, 2010Date of Patent: March 12, 2019Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Joel Lee Groves, Luke T. Perkins, Fabien Guizelin, Peter Wraight
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Patent number: 10174608Abstract: 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: GrantFiled: July 31, 2015Date of Patent: January 8, 2019Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Vincent Chatelet, Axel Quignard, Peter Wraight, Jean-Pierre Poyet, Fabien Nibodeau, Luke Perkins
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Publication number: 20180261349Abstract: 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: ApplicationFiled: April 13, 2018Publication date: September 13, 2018Inventors: Luke T. Perkins, Christian Stoller, Peter Wraight
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Publication number: 20180210095Abstract: 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: ApplicationFiled: January 5, 2018Publication date: July 26, 2018Inventors: Ken Stephenson, Peter Wraight, Wolfgang Ziegler, John J. Simonetti, Christian Stoller, Irina Molodetsky
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Patent number: 9947426Abstract: 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: GrantFiled: November 15, 2010Date of Patent: April 17, 2018Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Luke T. Perkins, Christian Stoller, Peter Wraight
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Patent number: 9880295Abstract: 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: GrantFiled: October 28, 2011Date of Patent: January 30, 2018Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Ken Stephenson, Peter Wraight, Wolfgang Ziegler, Christian Stoller, Irina Molodetsky, John J. Simonetti, Donna Simonetti
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Publication number: 20170226848Abstract: 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: ApplicationFiled: July 31, 2015Publication date: August 10, 2017Inventors: Vincent Chatelet, Axel Quignard, Peter Wraight, Jean-Pierre Poyet, Fabien Nibodeau, Luke Perkins
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Publication number: 20160306070Abstract: 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: ApplicationFiled: June 27, 2016Publication date: October 20, 2016Inventors: Matthieu Simon, Peter Wraight, Christian Stoller, Kenneth E. Stephenson, Andrew Bazarko
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Patent number: 9470817Abstract: 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: GrantFiled: November 17, 2014Date of Patent: October 18, 2016Assignee: Schlumberger Technology CorporationInventors: Joel L. Groves, Peter Wraight
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Patent number: 9394781Abstract: 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: GrantFiled: May 20, 2014Date of Patent: July 19, 2016Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Matthieu Simon, Peter Wraight, Christian Stoller, Kenneth E. Stephenson, Andrew Bazarko
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Patent number: 9372277Abstract: 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: GrantFiled: April 21, 2010Date of Patent: June 21, 2016Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Peter Wraight, James Thornton, Bradley A. Roscoe
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Publication number: 20160139294Abstract: 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: ApplicationFiled: November 17, 2014Publication date: May 19, 2016Inventors: Joel L. Groves, Peter Wraight
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Publication number: 20160143123Abstract: 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: ApplicationFiled: November 17, 2014Publication date: May 19, 2016Inventors: Joel L. Groves, Peter Wraight