Patents by Inventor Namhyo Kim
Namhyo Kim 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: 10781673Abstract: A sand control screen assembly includes a base pipe having multiple first openings through a thickness of the base pipe, where at least one of the first openings is characterized by a non-uniform cross-section, where each first opening has a first portion and a second portion adjacent to the first portion, where the first portion is disposed adjacent to an inner surface of the base pipe, where the second portion is disposed adjacent to an outer surface of the base pipe, where the second portion includes multiple channels, where each channel extends outward and upward relative to the first portion, where each channel includes a wall having a side wall edge and a base wall edge, where an interface surface between the side wall edge and the base wall edge is a planar surface.Type: GrantFiled: December 13, 2018Date of Patent: September 22, 2020Assignee: CHEVRON U.S.A. INC.Inventors: Namhyo Kim, Antonio Lazo, Elaine Lange
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Patent number: 10781672Abstract: A sand control screen assembly having a protective shroud or jacket that provides a controlled offset between the shroud and a filter medium. The sand control screen assembly also includes a base pipe having a drainage layer positioned therearound for preventing the flow of particulate material of a predetermined size therethrough and allowing the flow of production fluids therethrough.Type: GrantFiled: November 29, 2018Date of Patent: September 22, 2020Assignee: CHEVRON U.S.A. INC.Inventors: Antonio Lazo, Namhyo Kim
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Patent number: 10767449Abstract: A sand control screen assembly having a protective shroud or jacket that provides a controlled offset between the shroud and a filter medium. The sand control screen assembly also includes a base pipe having a drainage layer positioned therearound for preventing the flow of particulate material of a predetermined size therethrough and allowing the flow of production fluids therethrough.Type: GrantFiled: November 16, 2016Date of Patent: September 8, 2020Assignee: CHEVRON U.S.A. INC.Inventors: Antonio Lazo, Namhyo Kim
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Patent number: 10450844Abstract: A sand control screen assembly having a drainage layer that provides a controlled offset between the drainage layer and a filter medium and/or a base pipe. The sand control screen assembly also includes a protective shroud or jacket positioned about the filter medium. The sand control screen assembly can be utilized for preventing the flow of particulate material of a predetermined size therethrough and allowing the flow of production fluids therethrough.Type: GrantFiled: November 16, 2016Date of Patent: October 22, 2019Assignee: CHEVRON U.S.A. INC.Inventors: Namhyo Kim, Antonio Lazo, Elaine Lange
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Patent number: 10309197Abstract: An autonomous downhole power generation system includes a power generation device configured to be disposed in an annular space around a portion of a production tubing. The power generation device is switchable between a power generation mode and a bypass mode. The system further includes a power storage device electrically coupled to the power generation device and configured to store power generated by the power generation device, and a control processor communicatively coupled to the power generation device. The control processor switches the power generation device between the power generation mode and the bypass mode based on a preprogrammed operational protocol.Type: GrantFiled: January 18, 2017Date of Patent: June 4, 2019Assignee: CHEVRON U.S.A. INC.Inventor: Namhyo Kim
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Publication number: 20190120027Abstract: A sand control screen assembly includes a base pipe having multiple first openings through a thickness of the base pipe, where at least one of the first openings is characterized by a non-uniform cross-section, where each first opening has a first portion and a second portion adjacent to the first portion, where the first portion is disposed adjacent to an inner surface of the base pipe, where the second portion is disposed adjacent to an outer surface of the base pipe, where the second portion includes multiple channels, where each channel extends outward and upward relative to the first portion, where each channel includes a wall having a side wall edge and a base wall edge, where an interface surface between the side wall edge and the base wall edge is a planar surface.Type: ApplicationFiled: December 13, 2018Publication date: April 25, 2019Inventors: Namhyo Kim, Antonio Lazo, Elaine Lange
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Publication number: 20190093458Abstract: A sand control screen assembly having a protective shroud or jacket that provides a controlled offset between the shroud and a filter medium. The sand control screen assembly also includes a base pipe having a drainage layer positioned therearound for preventing the flow of particulate material of a predetermined size therethrough and allowing the flow of production fluids therethrough.Type: ApplicationFiled: November 29, 2018Publication date: March 28, 2019Applicant: CHEVRON U.S.A. INC.Inventors: Antonio Lazo, Namhyo Kim
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Patent number: 10184323Abstract: A sand control screen assembly includes a base pipe having openings having non-uniform cross-section. The sand control screen assembly can also include a drainage layer positioned about the base pipe, a filter medium, and a protective shroud. The sand control screen assembly prevents the flow of particulate material of a predetermined size therethrough and allows the flow of production fluids therethrough.Type: GrantFiled: November 16, 2016Date of Patent: January 22, 2019Assignee: CHEVRON U.S.A. INC.Inventors: Namhyo Kim, Antonio Lazo, Elaine Lange
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Publication number: 20170362920Abstract: A sand control screen assembly includes a base pipe having openings having non-uniform cross-section. The sand control screen assembly can also include a drainage layer positioned about the base pipe, a filter medium, and a protective shroud. The sand control screen assembly prevents the flow of particulate material of a predetermined size therethrough and allows the flow of production fluids therethrough.Type: ApplicationFiled: November 16, 2016Publication date: December 21, 2017Inventors: Namhyo Kim, Antonio Lazo, Elaine Lange
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Publication number: 20170362922Abstract: A sand control screen assembly having a filter medium that provides a controlled offset between a shroud and the filter medium, and/or between a base pipe and the filter medium. The sand control screen assembly may also include a drainage layer positioned about the base pipe. The sand control screen assembly is utilized for preventing the flow of particulate material of a predetermined size therethrough and allowing the flow of production fluids therethrough.Type: ApplicationFiled: November 16, 2016Publication date: December 21, 2017Inventors: Antonio Lazo, Namhyo Kim, David Underdown, John Alasdair Cameron, Rodney Joseph Wetzel, JR.
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Publication number: 20170362919Abstract: A sand control screen assembly having a protective shroud or jacket that provides a controlled offset between the shroud and a filter medium. The sand control screen assembly also includes a base pipe having a drainage layer positioned therearound for preventing the flow of particulate material of a predetermined size therethrough and allowing the flow of production fluids therethrough.Type: ApplicationFiled: November 16, 2016Publication date: December 21, 2017Inventors: Antonio Lazo, Namhyo Kim
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Publication number: 20170362921Abstract: A sand control screen assembly having a drainage layer that provides a controlled offset between the drainage layer and a filter medium and/or a base pipe. The sand control screen assembly also includes a protective shroud or jacket positioned about the filter medium. The sand control screen assembly can be utilized for preventing the flow of particulate material of a predetermined size therethrough and allowing the flow of production fluids therethrough.Type: ApplicationFiled: November 16, 2016Publication date: December 21, 2017Inventors: Namhyo Kim, Antonio Lazo, Elaine Lange
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Patent number: 9847738Abstract: A piezoelectric power generation system includes a housing defining an opening therethrough and a support structure disposed within the housing, the support structure comprising a plurality of portions. The piezoelectric power generation system also includes one or more piezoelectric elements disposed between two of the plurality of portions of the support structure within the housing. Movement or vibration in the support structure compresses the one or more piezoelectric elements, wherein the one or more piezoelectric elements generate electric energy when compressed. The piezoelectric power generation system further includes one or more exciters coupled to the support structure, wherein the exciters move or vibrate when acted on by a flow of fluid, wherein the motion of vibration of the one or more exciters is translated to the support structure and ultimately to the one or more piezoelectric elements.Type: GrantFiled: October 31, 2014Date of Patent: December 19, 2017Assignee: CHEVRON U.S.A. INC.Inventors: Namhyo Kim, Alvaro Jose Arrazola, James Benjamin Bloys
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Patent number: 9837937Abstract: A piezoelectric power generation device includes a stator, a rotor, and one or more piezoelectric power generation elements. The stator comprises an internal surface which defines an internal orifice. The one or more piezoelectric power generation elements are disposed on the internal surface of the stator. The rotor is disposed within the internal orifice comprising one or more lobes formed on an outside surface of the rotor. The rotor is configured to rotate with respect to the stator and the one or more piezoelectric power generation elements. The one or more lobes contact the one or more piezoelectric power generation elements as the one or more lobes rotate past the one or more piezoelectric power generation elements. The one or more piezoelectric power generation elements generate energy when contacted by the one or more lobes.Type: GrantFiled: December 4, 2014Date of Patent: December 5, 2017Assignee: CHEVRON U.S.A. INC.Inventors: Namhyo Kim, Parul Patel Anderson
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Patent number: 9780697Abstract: A piezoelectric power generation system includes a housing, the housing defining an opening therethrough. The piezoelectric power generation system further includes a support structure disposed within the housing, and one or more piezoelectric elements disposed on a surface of the support structure within the housing. Movement or vibration in the support structure is translated to the one or more piezoelectric elements, which actuates the one or more piezoelectric elements. The one or more piezoelectric elements generate power when actuated. The piezoelectric power generation system further includes one or more exciters coupled to the support structure. The exciters move or vibrate when acted on by a flow of fluid, wherein the motion of vibration of the one or more exciters is translated to the support structure and ultimately to the one or more piezoelectric elements.Type: GrantFiled: October 31, 2014Date of Patent: October 3, 2017Assignee: CHEVRON U.S.A INC.Inventors: Namhyo Kim, Alvaro Jose Arrazola, James Benjamin Bloys
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Patent number: 9774278Abstract: A piezoelectric power generation system includes a housing and one or more piezoelectric modules disposed within the housing. Each of the one or more piezoelectric modules include a support structure, one or more piezoelectric components, and one or more exciters. The one or more piezoelectric components are disposed on or within the support structure, wherein at least a portion of vibrational motion in the support structure is transferred to the one or more piezoelectric components. The one or more exciters are coupled to the support structure and extend outside of the housing. When the exciters are actuated, they transfer vibrational motion to the one or more piezoelectric components through the support structure.Type: GrantFiled: October 31, 2014Date of Patent: September 26, 2017Assignee: CHEVRON U.S.A. INC.Inventors: Namhyo Kim, Alvaro Jose Arrazola, James Benjamin Bloys
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Patent number: 9650865Abstract: An autonomous active flow control valve system for regulating and controlling flow across well segments is disclosed. In one example embodiment, the valve system includes a central control unit and one or more flow control devices communicatively coupled to the central control unit. Each flow control device includes at least one valve and at least one sensor for sensing various well or flow parameters. The central control unit receives sensor data from the sensor and controls the valve according to a pre-programmed control protocol. The valve may be opened, closed, and adjusted in response to detected well or flow parameters in order to maintain a desirable flow profile across well segments either in production or injection well.Type: GrantFiled: October 30, 2014Date of Patent: May 16, 2017Assignee: CHEVRON U.S.A. INC.Inventors: Namhyo Kim, Kai Sun, Luis Phillipe Costa Ferreira Tosi, Krystian K. Maskos, Thomas Gary Corbett
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Publication number: 20170122075Abstract: An autonomous downhole power generation system includes a power generation device configured to be disposed in an annular space around a portion of a production tubing. The power generation device is switchable between a power generation mode and a bypass mode. The system further includes a power storage device electrically coupled to the power generation device and configured to store power generated by the power generation device, and a control processor communicatively coupled to the power generation device. The control processor switches the power generation device between the power generation mode and the bypass mode based on a preprogrammed operational protocol.Type: ApplicationFiled: January 18, 2017Publication date: May 4, 2017Inventor: Namhyo Kim
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Patent number: 9638009Abstract: A downhole power generation system includes a tubular power generation device configured to be disposed in an annular space around a portion of a production tubing, wherein the power generation device is switchable between a power generation mode and a bypass mode. The system also includes a power storage device electrically coupled to the tubular power generation device and configured to store power generated by the power generation device. The power generation device comprises at least one power generation path and at least one bypass path. The at least one power generation path comprises at least one power generation mechanism which generates power when traversed by fluid. The at least one power generation path is open in the power generation mode and closed in the bypass mode.Type: GrantFiled: September 25, 2014Date of Patent: May 2, 2017Assignee: CHEVRON U.S.A. INC.Inventor: Namhyo Kim
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Patent number: 9638010Abstract: A downhole power generation device includes a tubular housing configured to be disposed within an annular space and around a portion of production tubing. The housing includes a flow compartment configured to receive a flow of fluid therethrough when the power generation device is in a power generation mode, and an electronics compartment comprising a controller and a power generation unit. The downhole power generation device further includes a turbomachinery system comprising a rotor disposed within the flow compartment and comprising a rotor hub and a plurality of rotor blades, wherein the rotor rotates when the flow of fluid traverses the flow compartment. The downhole power generation device also includes a port coupled to the flow compartment, through which fluid enters the flow compartment.Type: GrantFiled: September 25, 2014Date of Patent: May 2, 2017Assignee: CHEVRON U.S.A. INC.Inventor: Namhyo Kim