Patents by Inventor Toshimichi Wago
Toshimichi Wago 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: 11073630Abstract: A technique includes receiving data representing a measurement acquired by a tool motion sensor of a downhole sonic measurement tool; and receiving data representing a measurement acquired by a pressure sensor of the sonic measurement tool. The technique includes modifying the measurement acquired by the pressure sensor based at least in part on the measurement acquired by the tool motion sensor to attenuate tool borne noise.Type: GrantFiled: May 30, 2017Date of Patent: July 27, 2021Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Robert Hughes Jones, Toshimichi Wago, Can Evren Yarman
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Patent number: 10585202Abstract: A downhole tool having a transmitter array with azimuthally spaced transmitters and receiver arrays with azimuthally spaced receivers. Methods of operation include transmitting an acoustic signal from an individual one of the transmitters, sensing an attribute of the acoustic signal with the receivers, and evaluating a characteristic of a portion of a downhole feature based on response signals generated by the first and second receivers. Each response signal is indicative of the acoustic signal attribute sensed by the corresponding receivers. This is repeated with different individual ones of the transmitters and receivers until the evaluated portions of the downhole feature collectively extend around a wellbore.Type: GrantFiled: June 15, 2017Date of Patent: March 10, 2020Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Naoki Sakiyama, Wataru Izuhara, Hiroshi Hori, Toshimichi Wago
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Patent number: 10364664Abstract: A downhole tool for operation within a wellbore and including a transmitter array and first and second receiver arrays. The transmitter array includes a plurality of transmitters azimuthally distributed around a longitudinal axis of the downhole tool at a first axial location of the downhole tool. The first receiver array includes a plurality of first receivers azimuthally distributed around the longitudinal axis at a second axial location axially offset from the first axial location. The second receiver array includes a plurality of second receivers azimuthally distributed around the longitudinal axis at a third axial location axially offset from the first and second axial locations.Type: GrantFiled: June 15, 2017Date of Patent: July 30, 2019Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Hiroshi Hori, Wataru Izuhara, Naoki Sakiyama, Toshimichi Wago, Hiroshi Nakajima, Shin'ichi Houshuyama, Akane Imamura
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Publication number: 20180348390Abstract: A technique includes receiving data representing a measurement acquired by a tool motion sensor of a downhole sonic measurement tool; and receiving data representing a measurement acquired by a pressure sensor of the sonic measurement tool. The technique includes modifying the measurement acquired by the pressure sensor based at least in part on the measurement acquired by the tool motion sensor to attenuate tool borne noise.Type: ApplicationFiled: May 30, 2017Publication date: December 6, 2018Inventors: Robert Hughes Jones, Toshimichi Wago, Can Evren Yarman
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Patent number: 9927541Abstract: A tool for monopole and multipole sonic logging includes an acoustic source section, an acoustic receiver section, and an isolator section disposed therebetween. The tool may include a mandrel having integrally formed alternating first portions having a first outer diameter and second portions having a second outer diameter. The second outer diameter is smaller than the first outer diameter, which allows the portions to function acoustically as a mass and spring system. The isolator section sufficiently mutes or delays extensional and flexural modes intrinsic to the logging tool itself. Thus, the effects of the tool presence on the measurements are minimized. In addition, a plurality of axially oriented grooves are defined in an outer surface of the acoustic receiver section, and each groove is configured for receiving an acoustic receiver module that includes a sensor, an amplifier, an A/D converter, and a digital multiplexer.Type: GrantFiled: April 15, 2014Date of Patent: March 27, 2018Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Toshihiro Kinoshita, Naoki Sakiyama, Hitoshi Sugiyama, Yuichiro Wada, Toshimichi Wago, Akito Shigekane
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Publication number: 20180003843Abstract: A downhole tool for operation within a wellbore and including a transmitter array and first and second receiver arrays. The transmitter array includes a plurality of transmitters azimuthally distributed around a longitudinal axis of the downhole tool at a first axial location of the downhole tool. The first receiver array includes a plurality of first receivers azimuthally distributed around the longitudinal axis at a second axial location axially offset from the first axial location. The second receiver array includes a plurality of second receivers azimuthally distributed around the longitudinal axis at a third axial location axially offset from the first and second axial locations.Type: ApplicationFiled: June 15, 2017Publication date: January 4, 2018Inventors: Hiroshi Hori, Wataru Izuhara, Naoki Sakiyama, Toshimichi Wago, Hiroshi Nakajima, Shin'ichi Houshuyama, Akane Imamura
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Publication number: 20180003846Abstract: A technique facilitates removal of noise from sonic logging signals. The technique may comprise various approaches used alone or in combination to reduce or eliminate noise associated with tool arrival. The technique may comprise an active cancellation approach which optimizes the cancellation effect while having minimal impact on the desired acoustic signals. The techniques also may utilize an asynchronous noise cancellation approach with a calibration transmitter designed to minimize impact on the desired acoustic signals.Type: ApplicationFiled: June 19, 2017Publication date: January 4, 2018Inventors: Toshimichi Wago, Toshihiro Kinoshita, Jahir Pabon, Wataru Izuhara
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Publication number: 20180003845Abstract: A downhole tool having a transmitter array with azimuthally spaced transmitters and receiver arrays with azimuthally spaced receivers. Methods of operation include transmitting an acoustic signal from an individual one of the transmitters, sensing an attribute of the acoustic signal with the receivers, and evaluating a characteristic of a portion of a downhole feature based on response signals generated by the first and second receivers. Each response signal is indicative of the acoustic signal attribute sensed by the corresponding receivers. This is repeated with different individual ones of the transmitters and receivers until the evaluated portions of the downhole feature collectively extend around a wellbore.Type: ApplicationFiled: June 15, 2017Publication date: January 4, 2018Inventors: Naoki Sakiyama, Wataru Izuhara, Hiroshi Hori, Toshimichi Wago
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Publication number: 20150293251Abstract: A tool for monopole and multipole sonic logging includes an acoustic source section, an acoustic receiver section, and an isolator section disposed therebetween. The tool may include a mandrel having integrally formed alternating first portions having a first outer diameter and second portions having a second outer diameter. The second outer diameter is smaller than the first outer diameter, which allows the portions to function acoustically as a mass and spring system. The isolator section sufficiently mutes or delays extensional and flexural modes intrinsic to the logging tool itself. Thus, the effects of the tool presence on the measurements are minimized. In addition, a plurality of axially oriented grooves are defined in an outer surface of the acoustic receiver section, and each groove is configured for receiving an acoustic receiver module that includes a sensor, an amplifier, an A/D converter, and a digital multiplexer.Type: ApplicationFiled: April 15, 2014Publication date: October 15, 2015Applicant: Schlumberger Technology CorporationInventors: Toshihiro Kinoshita, Naoki Sakiyama, Hitoshi Sugiyama, Yuichiro Wada, Toshimichi Wago, Akito Shigekane
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Publication number: 20150152855Abstract: A positive displacement pump is provided that includes a pump housing having a pump chamber; a plunger mounted in the pump housing for reciprocating motion in the pump chamber; a suction valve positioned to allow a fluid to enter the pump chamber upon movement of the plunger in a first direction; a discharge valve positioned to discharge the fluid from the pump chamber upon movement of the plunger in a second direction; and at least one sensor enclosed by the pump housing for measuring at least one pump condition parameter.Type: ApplicationFiled: February 4, 2015Publication date: June 4, 2015Inventors: Jean-Louis PESSIN, Joe HUBENSCHMIDT, Erik RHEIN-KNUDSEN, Toshimichi WAGO, Nathan St. Michel
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Patent number: 8979505Abstract: A positive displacement pump is provided that includes a pump housing having a pump chamber; a plunger mounted in the pump housing for reciprocating motion in the pump chamber; a suction valve positioned to allow a fluid to enter the pump chamber upon movement of the plunger in a first direction; a discharge valve positioned to discharge the fluid from the pump chamber upon movement of the plunger in a second direction; and at least one sensor enclosed by the pump housing for measuring at least one pump condition parameter.Type: GrantFiled: October 17, 2006Date of Patent: March 17, 2015Assignee: Schlumberger Technology CorporationInventors: Jean-Louis Pessin, Joe Hubenschmidt, Erik Rhein-Knudsen, Toshimichi Wago, Nathan St. Michel
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Patent number: 8506262Abstract: A method for operating at least one pump in a pump assembly comprises providing a pump assembly comprising a fluid end and a power end, the fluid end in communication with a fluid source and at least one downstream destination and comprising a pump housing for a pressurizable chamber, at least one valve for controlling fluid communication with the chamber, the at least one valve defining a normal duration of allowing fluid communication with the chamber during operation of the pump assembly, providing a valve actuation guide external to the chamber, the valve actuation guide coupled to the valve and operable to assist in controlling fluid communication with the chamber, operating the pump assembly, and actuating the valve actuation guide to change an aspect of the valve duration.Type: GrantFiled: February 4, 2010Date of Patent: August 13, 2013Assignee: Schlumberger Technology CorporationInventors: Edward Leugemors, Rajesh Luharuka, Toshimichi Wago, Philippe Gambier, Jean-Louis Pessin, Aparna Raman
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Patent number: 8366408Abstract: A positive displacement pump having a valve with an actuation guide for assisting its actuation. The valve may be configured for controlling fluid communication relative to a chamber of the pump with the valve actuation guide positioned external to the chamber and configured to assist in the controlling. The valve actuation guide itself may include an arm extending into a valve actuation assembly below the valve. In such embodiments, the arm may be reciprocated by crankshaft, hydraulic, or other means. Alternatively, the valve actuation assembly may include electromagnetic means for assisting in actuation of the valve.Type: GrantFiled: May 1, 2008Date of Patent: February 5, 2013Assignee: Schlumberger Technology CorporationInventors: Toshimichi Wago, Philippe Gambier, Jean-Louis Pessin, Rajesh Luharuka
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Patent number: 8366402Abstract: A reciprocating pump system is utilized. The system facilitates the prediction of failure modes due to degradation of pump components. A sensor system is used to monitor parameters indicative of abnormal events or wear occurring in specific components, such as pump valves. The indications of wear can be used to predict valve failure or other component failure within the reciprocating pump.Type: GrantFiled: December 20, 2005Date of Patent: February 5, 2013Assignee: Schlumberger Technology CorporationInventors: Nathan St. Michel, Toshimichi Wago, Joe Hubenschmidt, Jean-Louis Pessin
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Patent number: 8317498Abstract: A pump assembly with valve-seat interface architecture configured to extend the life of pump components and the assembly. A valve of the pump assembly is equipped with a conformable valve insert that is configured with a circumferential component having the capacity to reduce the radial strain of its own deformation upon its striking of a valve seat at the interface within the pump assembly. The circumferential component may include a concave surface about the insert, a rounded abutment at the strike surface of the insert, or a core mechanism within the insert that is of greater energy absorbing character than surrounding material of the insert. Additionally, the valve seat itself may be configured for more even wear over time and equipped with a conformable seat insert to reduce wear on the valve insert.Type: GrantFiled: March 17, 2008Date of Patent: November 27, 2012Assignee: Schlumberger Technology CorporationInventors: Philippe Gambier, Toshimichi Wago, Jean-Louis Pessin
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Patent number: 8294589Abstract: A method of and a system for tracking radioactive sources includes at least one RFID tag attached to a radioactive source shield, the shield receiving a radioactive source at a base location, and a TRX-Gamma box for detecting identification information from the RFID tag and sensing a first gamma radiation count from the radioactive source shield. The identification information and the first gamma radiation count are stored and the shield with the radioactive source is transported to a job location where the radioactive source is removed from the shield. At the job location, a check is made that the radioactive source has been returned to the shield by comparing any newly detected identification information with the stored identification information, and by comparing a sensed second gamma radiation count with the first gamma radiation count.Type: GrantFiled: January 18, 2010Date of Patent: October 23, 2012Assignee: Schlumberger Technology CorporationInventors: Tim Smith, Arturo E. Altamirano, Toshimichi Wago
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Publication number: 20100259405Abstract: A method of and a system for tracking radioactive sources includes at least one RFID tag attached to a radioactive source shield, the shield receiving a radioactive source at a base location, and a TRX-Gamma box for detecting identification information from the RFID tag and sensing a first gamma radiation count from the radioactive source shield. The identification information and the first gamma radiation count are stored and the shield with the radioactive source is transported to a job location where the radioactive source is removed from the shield. At the job location, a check is made that the radioactive source has been returned to the shield by comparing any newly detected identification information with the stored identification information, and by comparing a sensed second gamma radiation count with the first gamma radiation count.Type: ApplicationFiled: January 18, 2010Publication date: October 14, 2010Inventors: Tim Smith, Arturo E. Altamirano, Toshimichi Wago
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Publication number: 20100183448Abstract: A method for operating at least one pump in a pump assembly comprises providing a pump assembly comprising a fluid end and a power end, the fluid end in communication with a fluid source and at least one downstream destination and comprising a pump housing for a pressurizable chamber, at least one valve for controlling fluid communication with the chamber, the at least one valve defining a normal duration of allowing fluid communication with the chamber during operation of the pump assembly, providing a valve actuation guide external to the chamber, the valve actuation guide coupled to the valve and operable to assist in controlling fluid communication with the chamber, operating the pump assembly, and actuating the valve actuation guide to change an aspect of the valve duration.Type: ApplicationFiled: February 4, 2010Publication date: July 22, 2010Inventors: Edward Leugemors, Rajesh Luharuka, Toshimichi Wago, Philippe Gambier, Jean-Louis Pessin, Aparna Raman
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Patent number: 7643945Abstract: A method of enhancing acoustic pump data for monitoring of pump condition in operation. The enhancement may be in the form of a substantial reduction in the amount of data to be processed by firmware to a much more manageable level. This may be achieved through pre-filtering of acquired acoustic data, computing frequency momentum, and by application of a median filter to the acoustic data. Regardless, a thresholding technique that uses features vector including but not limited to double-threshold derived from statistics of enhanced amplitudes, may be employed whereby enhanced acoustic data is boiled down to a series of potential acoustic events of particular widths. These widths may represent a duration of each acoustic event and be checked for correlation with the speed of the operating speed of the pump.Type: GrantFiled: May 23, 2007Date of Patent: January 5, 2010Assignee: Schlumberger Technology CorporationInventors: Nikolay Baklanov, Sarmad Adnan, Toshimichi Wago
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Publication number: 20080279706Abstract: A pump assembly with valve-seat interface architecture configured to extend the life of pump components and the assembly. A valve of the pump assembly is equipped with a conformable valve insert that is configured with a circumferential component having the capacity to reduce the radial strain of its own deformation upon its striking of a valve seat at the interface within the pump assembly. The circumferential component may include a concave surface about the insert, a rounded abutment at the strike surface of the insert, or a core mechanism within the insert that is of greater energy absorbing character than surrounding material of the insert. Additionally, the valve seat itself may be configured for more even wear over time and equipped with a conformable seat insert to reduce wear on the valve insert.Type: ApplicationFiled: March 17, 2008Publication date: November 13, 2008Inventors: Philippe Gambier, Toshimichi Wago, Jean-Louis Pessin