Patents by Inventor Khang V. Nguyen
Khang V. Nguyen 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: 10487607Abstract: A fracturing system includes a fracturing spool that mounts onto a wellhead assembly for injecting fracturing fluid into a well beneath the wellhead assembly. The fracturing system includes an isolation sleeve and fracturing spool. The isolation sleeve inserts in an axial bore of the fracturing spool, and has a lower end that extends into the wellhead to isolate and protect portions of the wellhead assembly from the fracturing fluid. A groove in an inner surface of the fracturing spool receives an annular seal for sealing between the isolation sleeve and fracturing spool. Injecting a viscous fluid into the groove energizes the seal, and blocks high pressure fracturing fluid from flowing between the isolation sleeve and fracturing spool.Type: GrantFiled: March 5, 2018Date of Patent: November 26, 2019Assignee: GE Oil & Gas Pressure Control LPInventors: Saurabh Kajaria, Khang V. Nguyen, Todd B. Adams
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Patent number: 10253589Abstract: Systems and methods for positioning tubular members within a subterranean well include inner and outer tubular members extending into the well. An adjustment ring assembly is located between the inner tubular member and the outer tubular member and has an outer ring and an inner ring. The outer ring circumscribes, and is rotatable relative to, the inner ring to adjust the radial offset between a central axis of the wellhead assembly and a central axis of the inner tubular member.Type: GrantFiled: July 5, 2016Date of Patent: April 9, 2019Assignee: GE Oil & Gas Pressure Control LPInventors: Andrew Browne Helvenston, Eugene Allen Borak, Khang V. Nguyen, Ryan Joseph Parsley
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Publication number: 20180195360Abstract: A fracturing system includes a fracturing spool that mounts onto a wellhead assembly for injecting fracturing fluid into a well beneath the wellhead assembly. The fracturing system includes an isolation sleeve and fracturing spool. The isolation sleeve inserts in an axial bore of the fracturing spool, and has a lower end that extends into the wellhead to isolate and protect portions of the wellhead assembly from the fracturing fluid. A groove in an inner surface of the fracturing spool receives an annular seal for sealing between the isolation sleeve and fracturing spool. Injecting a viscous fluid into the groove energizes the seal, and blocks high pressure fracturing fluid from flowing between the isolation sleeve and fracturing spool.Type: ApplicationFiled: March 5, 2018Publication date: July 12, 2018Applicant: GE Oil & Gas Pressure Control LPInventors: Saurabh Kajaria, Khang V. Nguyen, Todd B. Adams
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Patent number: 9909381Abstract: A fracturing system includes a fracturing spool that mounts onto a wellhead assembly for injecting fracturing fluid into a well beneath the wellhead assembly. The fracturing system includes an isolation sleeve and fracturing spool. The isolation sleeve inserts in an axial bore of the fracturing spool, and has a lower end that extends into the wellhead to isolate and protect portions of the wellhead assembly from the fracturing fluid. A groove in an inner surface of the fracturing spool receives an annular seal for sealing between the isolation sleeve and fracturing spool. Injecting a viscous fluid into the groove energizes the seal, and blocks high pressure fracturing fluid from flowing between the isolation sleeve and fracturing spool.Type: GrantFiled: July 17, 2013Date of Patent: March 6, 2018Assignee: GE OIL & GAS PRESSURE CONTROL LPInventors: Saurabh Kajaria, Khang V. Nguyen, Todd B. Adams
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Patent number: 9624747Abstract: A tubing hanger assembly includes a tubular outer tubing hanger member adapted to land in a bore of a wellhead. A tubular inner tubing hanger member is adapted to be secured to a string of production tubing and has an engaged position in a bore of the outer tubing hanger member. A retaining mechanism selectively allows the inner tubing hanger member to be lowered relative to the outer tubing hanger member, then selectively allowing the inner tubing hanger member to be returned back to the engaged position, to create tension in the string of production tubing. The retaining mechanism operates in response to rotational movement of the inner tubing hanger member while the outer tubing hanger member remains stationary with the wellhead.Type: GrantFiled: October 29, 2013Date of Patent: April 18, 2017Assignee: GE Oil & Gas Pressure Control LPInventors: Saurabh Kajaria, Khang V. Nguyen, Eugene A. Borak
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Publication number: 20170009539Abstract: Systems and methods for positioning tubular members within a subterranean well include inner and outer tubular members extending into the well. An adjustment ring assembly is located between the inner tubular member and the outer tubular member and has an outer ring and an inner ring. The outer ring circumscribes, and is rotatable relative to, the inner ring to adjust the radial offset between a central axis of the wellhead assembly and a central axis of the inner tubular member.Type: ApplicationFiled: July 5, 2016Publication date: January 12, 2017Inventors: Andrew Browne Helvenston, Eugene Allen Borak, Khang V. Nguyen, Ryan Joseph Parsley
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Patent number: 9534465Abstract: A method of completing a well includes lowering a wellhead onto a base at an upper end of the well. A hub with internal threads and an external circumferential stepped recess is secured to external threads of the wellhead. A blowout preventer assembly with an annular locking member having a plurality of locking elements is landed on the hub, and the locking elements are engaged with the recess of the hub. The well is drilled through the blowout preventer assembly to a greater depth then the blowout preventer assembly and the hub are removed. A threaded flange with a plurality of bolt holes spaced around the flange is secured to the external threads of the wellhead and a wellhead member is bolted to the bolt holes of the threaded flange.Type: GrantFiled: October 11, 2013Date of Patent: January 3, 2017Assignee: GE Oil & Gas Pressure Control LPInventors: Khang V. Nguyen, Saurabh Kajaria, Knox F. Wright, Sheila A. Adkinson
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Patent number: 9447671Abstract: A fracturing system includes a fracturing spool that mounts onto a wellhead assembly for injecting fracturing fluid into a well beneath the wellhead assembly. An isolation sleeve is included with the fracturing system that couples to the fracturing spool and extends into the wellhead to isolate and protect portions of the wellhead assembly from the fracturing fluid. A seal is between the isolation sleeve and bore of the wellhead assembly, which is threaded to the isolation sleeve. Manipulating the threaded connection between the isolation sleeve and seal selectively positions the isolation sleeve to designated axial positions within the wellhead assembly.Type: GrantFiled: July 17, 2013Date of Patent: September 20, 2016Assignee: GE OIL & GAS PRESSURE CONTROL LPInventors: Khang V. Nguyen, Eugene Allen Borak, Saurabh Kajaria
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Publication number: 20140151069Abstract: A tubing hanger assembly includes a tubular outer tubing hanger member adapted to land in a bore of a wellhead. A tubular inner tubing hanger member is adapted to be secured to a string of production tubing and has an engaged position in a bore of the outer tubing hanger member. A retaining mechanism selectively allows the inner tubing hanger member to be lowered relative to the outer tubing hanger member, then selectively allowing the inner tubing hanger member to be returned back to the engaged position, to create tension in the string of production tubing. The retaining mechanism operates in response to rotational movement of the inner tubing hanger member while the outer tubing hanger member remains stationary with the wellhead.Type: ApplicationFiled: October 29, 2013Publication date: June 5, 2014Applicant: GE Oil & Gas Pressure Control LPInventors: Saurabh Kajaria, Khang V. Nguyen, Eugene A. Borak
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Publication number: 20140116723Abstract: A method of completing a well includes Lowering a wellhead onto a base al as upper end of the well. A hub with internal threads and an external circumferential stepped recess is secured to external threads of the wellhead. A blowout preventer assembly with an annular locking member having a plurality of locking demerits is landed on the hub, and the looking elements are engaged with the recess of the hub. The well is drilled through the blowout preventer assembly to a greater depth then the blowout preventer assembly and the hub are removed. A threaded flange with & plurality of bolt holes spaced around die flange is secured to the external threads of the wellhead and a wellhead member is bolted to the bolt holes of the threaded flange.Type: ApplicationFiled: October 11, 2013Publication date: May 1, 2014Applicant: GE Oil & Gas Pressure Control LPInventors: Khang V. Nguyen, Saurabh Kajaria, Knox F. Wright, Sheila A. Adkinson
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Publication number: 20140020900Abstract: A fracturing system includes a fracturing spool that mounts onto a wellhead assembly for injecting fracturing fluid into a well beneath the wellhead assembly. An isolation sleeve is included with the fracturing system that couples to the fracturing spool and extends into the wellhead to isolate and protect portions of the wellhead assembly from the fracturing fluid. A seal is between the isolation sleeve and bore of the wellhead assembly, which is threaded to the isolation sleeve. Manipulating the threaded connection between the isolation sleeve and seal selectively positions the isolation sleeve to designated axial positions within the wellhead assembly.Type: ApplicationFiled: July 17, 2013Publication date: January 23, 2014Inventors: Khang V. Nguyen, Eugene Allen Borak, Saurabh Kajaria
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Publication number: 20140020901Abstract: A fracturing system includes a fracturing spool that mounts onto a wellhead assembly for injecting fracturing fluid into a well beneath the wellhead assembly. The fracturing system includes an isolation sleeve and fracturing spool. The isolation sleeve inserts in an axial bore of the fracturing spool, and has a lower end that extends into the wellhead to isolate and protect portions of the wellhead assembly from the fracturing fluid. A groove in an inner surface of the fracturing spool receives an annular seal for sealing between the isolation sleeve and fracturing spool. Injecting a viscous fluid into the groove energizes the seal, and blocks high pressure fracturing fluid from flowing between the isolation sleeve and fracturing spool.Type: ApplicationFiled: July 17, 2013Publication date: January 23, 2014Inventors: Saurabh Kajaria, Khang V. Nguyen, Todd B. Adams
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Patent number: 8076627Abstract: An image intensifier tube includes a microchannel plate (MCP) having conductive input and output surfaces disposed in a housing. A conductive lower support is in electrical contact with the output surface of the MCP, and a conductive upper support is disposed above the input surface of the MCP. A shape memory alloy (SMA) lockdown is disposed between the input surface of the MCP and the upper support. The SMA lockdown is configured to provide a lockdown for the MCP in the housing. An SMA upper surface is configured to provide an axial force against the upper support, and an SMA lower surface is in contact with the input surface of the MCP.Type: GrantFiled: April 26, 2010Date of Patent: December 13, 2011Assignee: ITT Manufacturing Enterprises, Inc.Inventors: Steven David Rosine, Khang V. Nguyen, Michael Scott Mills
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Publication number: 20110260608Abstract: An image intensifier tube includes a microchannel plate (MCP) having conductive input and output surfaces disposed in a housing. A conductive lower support is in electrical contact with the output surface of the MCP, and a conductive upper support is disposed above the input surface of the MCP. A shape memory alloy (SMA) lockdown is disposed between the input surface of the MCP and the upper support. The SMA lockdown is configured to provide a lockdown for the MCP in the housing. An SMA upper surface is configured to provide an axial force against the upper support, and an SMA lower surface is in contact with the input surface of the MCP.Type: ApplicationFiled: April 26, 2010Publication date: October 27, 2011Applicant: ITT MANUFACTURING ENTERPRISES, INC.Inventors: Steven David Rosine, Khang V. Nguyen, Michael Scott Mills
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Patent number: 6716289Abstract: A gas collector for collecting gasses from within a reaction chamber of a reactor comprises a body having a conduit, at least one inlet, an outlet, and a seal disposed on the body. The seal cooperates with a lid of the reactor to prevent escape of reaction gasses from the reaction chamber. The body includes first and second members and is formed from graphite. The seal is formed from molybdenum and is ring-shaped with a generally crescent-shaped cross-section and inner and outer edges. A top surface of the body includes a pair of concentric slots into which the inner and outer edges are respectively positioned. The first and second members can be detachably connected to one another, and the first and second members can be stationary relative to one another during operation of the gas collector.Type: GrantFiled: November 27, 2001Date of Patent: April 6, 2004Assignee: ITT Manufacturing Enterprises, Inc.Inventors: Roger Sillmon, Khang V. Nguyen
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Patent number: 6676758Abstract: A gas collector for collecting gasses from within a reaction chamber of a reactor comprises a rigid body having a conduit, inlets, an outlet, and a seal disposed on the body. The seal cooperates with a lid of the reactor to prevent escape of reaction gasses from the reaction chamber. The inlets direct the gasses from the reaction chamber into the conduit, and the outlet exhausts the gasses from the conduit. The body includes a first member and a second member with the seal disposed on the second member. The body can include inter-member seals for reducing the flow of the gasses across an interface between the first member and the second member. The inter-member seals disposed between the first member and the second member and allow movement of the first member relative to the second member. The body can also be formed from graphite and can also shape the flow of gasses into the reaction chamber to prevent the formation of standing eddy currents adjacent the gas collector.Type: GrantFiled: June 21, 2001Date of Patent: January 13, 2004Assignee: ITT Manufacturing Enterprises, Inc.Inventors: Roger Sillmon, Khang V. Nguyen
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Patent number: 6666920Abstract: A gas collector for collecting gasses from within a reaction chamber of a reactor comprises a body having a conduit, at least one inlet, an outlet, and a seal disposed on the body. The seal cooperates with a lid of the reactor to prevent escape of reaction gasses from the reaction chamber. The inlets direct the gasses from the reaction chamber into the conduit, and the outlet exhausts the gasses from the conduit. The gas collector includes means for providing an even flow of gasses through the reaction chamber. The body includes a first member and a second member with the seal disposed on the second member. The body can include inter-member seals for reducing the flow of the gasses across an interface between the first member and the second member. The inter-member seals disposed between the first member and the second member and allow movement of the first member relative to the second member. The body can also be formed from graphite.Type: GrantFiled: November 27, 2001Date of Patent: December 23, 2003Assignee: ITT Manufacturing Enterprises, Inc.Inventors: Roger Sillmon, Khang V. Nguyen
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Patent number: 6478877Abstract: A gas collector is disclosed for use with epitaxial reactors. The gas collector is in the form of a base and top portion that are interconnected by means of a sealing arrangement. The top portion is configured to cover the base and define a conduit therebetween. Inlets and outlets are provided to direct chemical vapors from a reaction chamber of the epitaxial reactor into the conduit and further into an exhaust pipe of the epitaxial reactor. The gas collector is capable of forming a hermetic seal with the lid of the reaction chamber in order to prevent escape of chemical vapors.Type: GrantFiled: January 11, 2001Date of Patent: November 12, 2002Assignee: ITT Manufacturing, Inc.Inventors: Roger S. Sillmon, Khang V. Nguyen
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Publication number: 20020017244Abstract: A gas collector for collecting gasses from within a reaction chamber of a reactor comprises a rigid body having a conduit, inlets, an outlet, and a seal disposed on the body. The seal cooperates with a lid of the reactor to prevent escape of reaction gasses from the reaction chamber. The inlets direct the gasses from the reaction chamber into the conduit, and the outlet exhausts the gasses from the conduit. The body includes a first member and a second member with the seal disposed on the second member. The body can include inter-member seals for reducing the flow of the gasses across an interface between the first member and the second member. The inter-member seals disposed between the first member and the second member and allow movement of the first member relative to the second member. The body can also be formed from graphite and can also shape the flow of gasses into the reaction chamber to prevent the formation of standing eddy currents adjacent the gas collector.Type: ApplicationFiled: June 21, 2001Publication date: February 14, 2002Applicant: ITT MANUFACTURING ENTERPRISES, INC.Inventors: Roger Sillmon, Khang V. Nguyen
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Patent number: 6325855Abstract: A gas collector is disclosed for use with epitaxial reactors. The gas collector is in the form of a base and top portion that are interconnected by means of a sealing arrangement. The top portion is configured to cover the base and define a conduit therebetween. Inlets and outlets are provided to direct chemical vapors from a reaction chamber of the epitaxial reactor into the conduit and further into an exhaust pipe of the epitaxial reactor. The gas collector is capable of forming a hermetic seal with the lid of the reaction chamber in order to prevent escape of chemical vapors.Type: GrantFiled: August 9, 2000Date of Patent: December 4, 2001Assignee: ITT Manufacturing Enterprises, Inc.Inventors: Roger S. Sillmon, Khang V. Nguyen