Patents by Inventor Alan J. Sallwasser
Alan J. Sallwasser 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: 11815352Abstract: A downhole borehole imaging tool and methods for determining a borehole size includes a magnetoresistive system and a hub moveably coupled to a fixed tool string. The hub includes a magnet. The magnetoresistive system includes magnetoresistive sensors disposed within the fixed tool string and segregated from the magnet. During operation, a routine scan of all sensors measures, for example, the output voltage V, angle ? of magnetic field, and temperature. Measurements from each sensor may then be characterized to account for temperature and input voltages variation of the sensors. The most accurate measurement can be used to derive the position of the hub 44 using the previous baseline parameters stored in the tool.Type: GrantFiled: March 30, 2021Date of Patent: November 14, 2023Assignee: Schlumberger Technology CorporationInventors: Julien Toniolo, Alan J. Sallwasser, Peter Wells, Mark A. Fredette
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Publication number: 20210239448Abstract: A downhole borehole imaging tool and methods for determining a borehole size includes a magnetoresistive system and a hub moveably coupled to a fixed tool string. The hub includes a magnet. The magnetoresistive system includes magnetoresistive sensors disposed within the fixed tool string and segregated from the magnet. During operation, a routine scan of all sensors measures, for example, the output voltage V, angle ? of magnetic field, and temperature. Measurements from each sensor may then be characterized to account for temperature and input voltages variation of the sensors. The most accurate measurement can be used to derive the position of the hub 44 using the previous baseline parameters stored in the tool.Type: ApplicationFiled: March 30, 2021Publication date: August 5, 2021Inventors: Julien Toniolo, Alan J. Sallwasser, Peter Wells, Mark A. Fredette
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Patent number: 10605949Abstract: An imaging tool that includes an array of pads. The array of pads are in communication with a hot terminal of a single phase electrical alternating current power source in communication with the array of pads. The single phase electrical alternating current power source includes two return electrodes. One of the return electrodes is located above the array of pads, and the other return terminal is located below the array of pads.Type: GrantFiled: April 11, 2016Date of Patent: March 31, 2020Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Peter Wells, Mark Fredette, Julien Toniolo, Alan J. Sallwasser
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Patent number: 10253576Abstract: An impact dissipation tool for supporting a downhole tool in downhole applications. The tool includes a base and a housing. The tool also includes a carriage located within the housing and coupled to the base, the carriage being movable relative to the housing upon a predetermined impact force. A dissipator disposed inside the housing is collapsible due to the relative movement of the carriage and the housing. The collapse of the dissipator dissipates the impact force transferred to the downhole tool.Type: GrantFiled: February 9, 2017Date of Patent: April 9, 2019Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Alan J. Sallwasser, Bulent Finci, Jaime Pedraza, Akio Kita
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Patent number: 10030503Abstract: A downhole tool includes a logging tool. The logging tool includes a spring integral with a sensor. The spring applies the sensor to a formation wall. Additionally, the spring includes a groove formed along a neutral axis thereof. In addition, a wire is located within the groove and is operatively connected with the sensor and at least one other component of the logging tool.Type: GrantFiled: February 20, 2015Date of Patent: July 24, 2018Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Alan J. Sallwasser, Julien Toniolo, Peter Wells, Mark A. Fredette
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Publication number: 20170293045Abstract: An imaging tool that includes an array of pads. The array of pads are in communication with a hot terminal of a single phase electrical alternating current power source in communication with the array of pads. The single phase electrical alternating current power source includes two return electrodes. One of the return electrodes is located above the array of pads, and the other return terminal is located below the array of pads.Type: ApplicationFiled: April 11, 2016Publication date: October 12, 2017Inventors: Peter Wells, Mark Fredette, Julien Toniolo, Alan J. Sallwasser
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Patent number: 9739102Abstract: An impact dissipation tool for supporting a downhole tool in downhole applications. The tool includes a base and a housing. The tool also includes a carriage located within the housing and coupled to the base, the carriage being movable relative to the housing upon a predetermined impact force. A dissipator disposed inside the housing is collapsible due to the relative movement of the carriage and the housing. The collapse of the dissipator dissipates the impact force transferred to the downhole tool.Type: GrantFiled: July 17, 2014Date of Patent: August 22, 2017Assignee: Schlumberger Technology CorporationInventors: Alan J. Sallwasser, Bulent Finci, Jaime Pedraza, Akio Kita
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Publication number: 20170145758Abstract: An impact dissipation tool for supporting a downhole tool in downhole applications. The tool includes a base and a housing. The tool also includes a carriage located within the housing and coupled to the base, the carriage being movable relative to the housing upon a predetermined impact force. A dissipator disposed inside the housing is collapsible due to the relative movement of the carriage and the housing. The collapse of the dissipator dissipates the impact force transferred to the downhole tool.Type: ApplicationFiled: February 9, 2017Publication date: May 25, 2017Inventors: Alan J. Sallwasser, Bulent Finci, Jaime Pedraza, Akio Kita
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Patent number: 9567812Abstract: An impact dissipation tool for supporting a downhole tool in downhole applications. The tool includes a base and a housing. The tool also includes a carriage located within the housing and coupled to the base, the carriage being movable relative to the housing upon a predetermined impact force. A dissipator disposed inside the housing is collapsible due to the relative movement of the carriage and the housing. The collapse of the dissipator dissipates the impact force transferred to the downhole tool.Type: GrantFiled: July 17, 2014Date of Patent: February 14, 2017Assignee: Schlumberger Technology CorporationInventors: Alan J. Sallwasser, Bulent Finci, Jaime Pedraza, Akio Kita
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Publication number: 20160245069Abstract: A downhole tool includes a logging tool. The logging tool includes a spring integral with a sensor. The spring applies the sensor to a formation wall. Additionally, the spring includes a groove formed along a neutral axis thereof. In addition, a wire is located within the groove and is operatively connected with the sensor and at least one other component of the logging tool.Type: ApplicationFiled: February 20, 2015Publication date: August 25, 2016Inventors: Julien Toniolo, Alan J. Sallwasser, Peter Wells, Mark A. Fredette
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Publication number: 20160237809Abstract: A downhole tool includes a position system. The position system includes a hub moveably coupled to a fixed tool string. The hub includes a sensor component. The position system also includes a position sensor disposed within the fixed tool string and segregated from the sensor component. Additionally, the sensor component is at a first pressure and the position sensor is at a second pressure, different than the first pressure.Type: ApplicationFiled: February 17, 2015Publication date: August 18, 2016Inventors: Julien Toniolo, Alan J. Sallwasser, Peter Wells, Mark A. Fredette
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Patent number: 8925213Abstract: A wellbore caliper includes an actuator housing pivotally connected at one end to a well logging instrument housing and an actuator disposed in the housing and operable to extend and retract laterally extensible measuring arms.Type: GrantFiled: August 29, 2012Date of Patent: January 6, 2015Assignee: Schlumberger Technology CorporationInventor: Alan J. Sallwasser
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Publication number: 20140326513Abstract: An impact dissipation tool for supporting a downhole tool in downhole applications. The tool includes a base and a housing. The tool also includes a carriage located within the housing and coupled to the base, the carriage being movable relative to the housing upon a predetermined impact force. A dissipator disposed inside the housing is collapsible due to the relative movement of the carriage and the housing. The collapse of the dissipator dissipates the impact force transferred to the downhole tool.Type: ApplicationFiled: July 17, 2014Publication date: November 6, 2014Applicant: Schlumberger Technology CorporationInventors: Alan J. Sallwasser, Bulent Finci, Jaime Pedraza, Akio Kita
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Publication number: 20140326508Abstract: An impact dissipation tool for supporting a downhole tool in downhole applications. The tool includes a base and a housing. The tool also includes a carriage located within the housing and coupled to the base, the carriage being movable relative to the housing upon a predetermined impact force. A dissipator disposed inside the housing is collapsible due to the relative movement of the carriage and the housing. The collapse of the dissipator dissipates the impact force transferred to the downhole tool.Type: ApplicationFiled: July 17, 2014Publication date: November 6, 2014Applicant: Schlumberger Technology CorporationInventors: Alan J. Sallwasser, Bulent Finci, Jaime Pedraza, Akio Kita
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Patent number: 8813876Abstract: An impact dissipation tool for supporting a downhole tool in downhole applications. The tool includes a base and a housing. The tool also includes a carriage located within the housing and coupled to the base, the carriage being movable relative to the housing upon a predetermined impact force. A dissipator disposed inside the housing is collapsible due to the relative movement of the carriage and the housing. The collapse of the dissipator dissipates the impact force transferred to the downhole tool.Type: GrantFiled: October 18, 2011Date of Patent: August 26, 2014Assignee: Schlumberger Technology CorporationInventors: Alan J. Sallwasser, Bulent Finci, Jaime Pedraza, Akio Kita
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Publication number: 20130092447Abstract: An impact dissipation tool for supporting a downhole tool in downhole applications. The tool includes a base and a housing. The tool also includes a carriage located within the housing and coupled to the base, the carriage being movable relative to the housing upon a predetermined impact force. A dissipator disposed inside the housing is collapsible due to the relative movement of the carriage and the housing. The collapse of the dissipator dissipates the impact force transferred to the downhole tool.Type: ApplicationFiled: October 18, 2011Publication date: April 18, 2013Applicant: THRUBIT B.V.Inventors: Alan J. Sallwasser, Bulent Finci, Jaime Pedraza, Akio Kita
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Patent number: 8316703Abstract: A flexible coupling for well logging instruments includes a housing coupled at one longitudinal end to one end of a second housing. Each of the housings defines a sealed interior chamber. The housings are coupled to enable angular deflection between respective longitudinal axes thereof. A conduit extends between the housings. The conduit is sealingly engaged to each housing such that longitudinal ends of the conduit are substantially positionally fixed with respect to each housing. The conduit is formed from material and has dimensions selected to withstand at least a same hydrostatic pressure as each of the housings. The conduit includes a bending strain distribution feature configured such that at a maximum angular deflection between housings a bending strain in the conduit is at most equal to an elastic limit of the conduit.Type: GrantFiled: April 25, 2008Date of Patent: November 27, 2012Assignee: Schlumberger Technology CorporationInventors: Alan J Sallwasser, Richard M Wilde
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Publication number: 20090266535Abstract: A flexible coupling for well logging instruments includes a housing coupled at one longitudinal end to one end of a second housing. Each of the housings defines a sealed interior chamber. The housings are coupled to enable angular deflection between respective longitudinal axes thereof. A conduit extends between the housings. The conduit is sealingly engaged to each housing such that longitudinal ends of the conduit are substantially positionally fixed with respect to each housing. The conduit is formed from material and has dimensions selected to withstand at least a same hydrostatic pressure as each of the housings. The conduit includes a bending strain distribution feature configured such that at a maximum angular deflection between housings a bending strain in the conduit is at most equal to an elastic limit of the conduit.Type: ApplicationFiled: April 25, 2008Publication date: October 29, 2009Inventors: Alan J. Sallwasser, Richard M. Wilde
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Patent number: 6951114Abstract: A method, system, and apparatus for controlling the temperature within a remotely located enclosure that contains temperature sensitive equipment is provided. For some embodiments, the system includes an array of thermoelectric cooling (TEC) devices that act as an active cooling device and an active heating device. The system may also include a temperature controller that receives signals from a temperature sensor located at or near the temperature sensitive equipment. The controller may be configured to supply DC power to the thermoelectric coupling devices based on the output signal of the temperature sensor. The polarity of the DC power can be reversed by the controller in order to cause the thermoelectric device to heat or to cool the enclosure. The system also contains a passive cooling device. The system includes an independent electrical power source with a battery and solar cell to supply power to the temperature control devices and the equipment contained in the enclosure.Type: GrantFiled: July 15, 2003Date of Patent: October 4, 2005Assignee: Weatherford/Lamb, Inc.Inventors: John N. Grisham, Michael M. Meadows, Leslie Wayne Perry, Alan J. Sallwasser
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Patent number: 6285014Abstract: The tool comprises one or more core-coil assemblies 2 jacketed in an non-magnetic and electrically insulating, tubular outer housing, 10. The housing enables high power transfer efficiency. A structural skeleton 20 extends longitudinally through the tool for axially reinforcement. The core-coil assemblies 2 are encapsulated in epoxy 77 to mechanically rigidify and protect them as well as to isolate the coil windings 51 from the power bus 23 extending longitudinally of the core-coil assemblies through a peripheral busway 60, 61.Type: GrantFiled: April 28, 2000Date of Patent: September 4, 2001Assignee: Neo PPG International, Ltd.Inventors: Thomas Beck, Stephen J. Garnall, David Seemab Kahn, Bruce C. W. McGee, Alan J. Sallwasser, George T. Stapleton, II, Mark W. Wassell