Patents by Inventor Jili (Jerry) Liu
Jili (Jerry) Liu 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: 10598000Abstract: A method for using a downhole probe. The method comprises providing a probe, at least one vertical cross section of the probe having an area of at least pi inches squared. The method further comprises inserting the probe into a bore of a drill collar and passing a drilling fluid through the bore of drill collar at a flow velocity of less than 41 feet per second.Type: GrantFiled: February 27, 2018Date of Patent: March 24, 2020Assignee: Evolution Engineering Inc.Inventors: Jili (Jerry) Liu, Patrick R. Derkacz, Aaron W. Logan, Justin C. Logan, David A. Switzer
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Patent number: 10570726Abstract: An assembly for receiving telemetry signals from downhole equipment is located at a top end of a drill string above a drill rig floor. The assembly may be configured to receive multiple types of telemetry signals, for example, two or more of electromagnetic telemetry, mud pulse telemetry and drill string acoustic telemetry signals. The assembly may comprise a cap comprising a coupling and an end separated by an electrically-insulating gap region. The end of the cap may be connected to a grounding system for the drill rig.Type: GrantFiled: December 21, 2018Date of Patent: February 25, 2020Assignee: Evolution Engineering Inc.Inventors: Aaron W. Logan, Daniel W. Ahmoye, David A. Switzer, Jili Jerry Liu
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Patent number: 10563503Abstract: A range of apparatus and methods for providing local and long range data telemetry within a wellbore is described. These apparatus and methods may be combined in a wide variety of ways. In some embodiments data is transmitted across a gap in a drill string using signals of a higher frequency for which an electrical impedance of the gap or of a filter connected across the gap is low. Low-frequency EM telemetry signals may be applied across the gap. The gap and any filter connected across the gap present a high impedance to the low-frequency EM telemetry signals. The described technology may be applied for transferring sensor readings between downhole electrical packages. In some embodiments sensors are electrically connected across electrically insulating gaps in the drill string.Type: GrantFiled: February 20, 2018Date of Patent: February 18, 2020Assignee: Evolution Engineering Inc.Inventors: David A. Switzer, Aaron W. Logan, Jili (Jerry) Liu, Mojtaba Kazemi Miraki
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Publication number: 20190218908Abstract: An assembly for receiving telemetry signals from downhole equipment is located at a top end of a drill string above a drill rig floor. The assembly may be configured to receive multiple types of telemetry signals, for example, two or more of electromagnetic telemetry, mud pulse telemetry and drill string acoustic telemetry signals. The assembly may comprise a cap comprising a coupling and an end separated by an electrically-insulating gap region. The end of the cap may be connected to a grounding system for the drill rig.Type: ApplicationFiled: December 21, 2018Publication date: July 18, 2019Inventors: Aaron W. LOGAN, Daniel W. AHMOYE, David A. SWITZER, Jili Jerry LIU
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Patent number: 10301931Abstract: A downhole system provides a data interface to a first downhole tool such as a steerable rotary tool. The data interface uses a close proximity data connection such as a connection between inductive loops or coils or a direct wired or optical connection. The interface provides data to a second downhole tool in a drill string section adjacent to the first downhole tool. In some embodiments data is passed to a third downhole tool that includes a telemetry transmitter. The third downhole tool may comprise a MWD (measurement while drilling) tool.Type: GrantFiled: May 8, 2015Date of Patent: May 28, 2019Assignee: Evolution Engineering Inc.Inventors: Patrick R. Derkacz, Aaron William Logan, Justin C. Logan, Kurtis West, Jili (Jerry) Liu, Barry D. Buternowsky
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Patent number: 10196892Abstract: An assembly for receiving telemetry signals from downhole equipment is located at a top end of a drill string above a drill rig floor. The assembly may be configured to receive multiple types of telemetry signals, for example, two or more of electromagnetic telemetry, mud pulse telemetry and drill string acoustic telemetry signals. The assembly may comprise a cap comprising a coupling and an end separated by an electrically-insulating gap region. The end of the cap may be connected to a grounding system for the drill rig.Type: GrantFiled: May 3, 2017Date of Patent: February 5, 2019Assignee: Evolution Engineering Inc.Inventors: Aaron W. Logan, Daniel W. Ahmoye, David A. Switzer, Jili Jerry Liu
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Publication number: 20180216457Abstract: A downhole system provides a data interface to a first downhole tool such as a steerable rotary tool. The data interface uses a close proximity data connections such as a connection between inductive loops or coils or a direct wired or optical connection. The interface provides data to a second downhole tool in a drill string section adjacent to the first downhole tool. In some embodiments data is passed to a third downhole tool that includes a telemetry transmitter. The third downhole tool may comprise a MWD (measurement while drilling) tool.Type: ApplicationFiled: May 8, 2015Publication date: August 2, 2018Inventors: Patrick R. DERKACZ, Aaron William LOGAN, Justin C. LOGAN, Kurtis WEST, Jili (Jerry) LIU, Barry D. BUTERNOWSKY
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Publication number: 20180202282Abstract: A method for using a downhole probe. The method comprises providing a probe, at least one vertical cross section of the probe having an area of at least pi inches squared. The method further comprises inserting the probe into a bore of a drill collar and passing a drilling fluid through the bore of drill collar at a flow velocity of less than 41 feet per second.Type: ApplicationFiled: February 27, 2018Publication date: July 19, 2018Inventors: Jili (Jerry) LIU, Patrick R. DERKACZ, Aaron W. LOGAN, Justin C. LOGAN, David A. SWITZER
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Publication number: 20180187545Abstract: A range of apparatus and methods for providing local and long range data telemetry within a wellbore is described. These apparatus and methods may be combined in a wide variety of ways. In some embodiments data is transmitted across a gap in a drill string using signals of a higher frequency for which an electrical impedance of the gap or of a filter connected across the gap is low. Low-frequency EM telemetry signals may be applied across the gap. The gap and any filter connected across the gap present a high impedance to the low-frequency EM telemetry signals. The described technology may be applied for transferring sensor readings between downhole electrical packages. In some embodiments sensors are electrically connected across electrically insulating gaps in the drill string.Type: ApplicationFiled: February 20, 2018Publication date: July 5, 2018Inventors: David A. SWITZER, Aaron W. LOGAN, Jili (Jerry) LIU, Mojtaba KAZEMI MIRAKI
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Patent number: 9951603Abstract: A method for using a downhole probe. The method comprises providing a probe, at least one vertical cross section of the probe having an area of at least pi inches squared. The method further comprises inserting the probe into a bore of a drill collar and passing a drilling fluid through the bore of drill collar at a flow velocity of less than 41 feet per second.Type: GrantFiled: December 7, 2012Date of Patent: April 24, 2018Assignee: Evolution Engineering Inc.Inventors: Jili (Jerry) Liu, Patrick R. Derkacz, Aaron W. Logan, Justin C. Logan, David A. Switzer
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Patent number: 9920622Abstract: A range of apparatus and methods for providing local and long range data telemetry within a wellbore is described. These apparatus and methods may be combined in a wide variety of ways. In some embodiments data is transmitted across a gap in a drill string using signals of a higher frequency for which an electrical impedance of the gap or of a filter connected across the gap is low. Low-frequency EM telemetry signals may be applied across the gap. The gap and any filter connected across the gap present a high impedance to the low-frequency EM telemetry signals. The described technology may be applied for transferring sensor readings between downhole electrical packages. In some embodiments sensors are electrically connected across electrically insulating gaps in the drill string.Type: GrantFiled: September 5, 2013Date of Patent: March 20, 2018Assignee: Evolution Engineering Inc.Inventors: David A. Switzer, Aaron W. Logan, Jili (Jerry) Liu, Mojtaba Kazemi Miraki
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Publication number: 20170234123Abstract: An assembly for receiving telemetry signals from downhole equipment is located at a top end of a drill string above a drill rig floor. The assembly may be configured to receive multiple types of telemetry signals, for example, two or more of electromagnetic telemetry, mud pulse telemetry and drill string acoustic telemetry signals. The assembly may comprise a cap comprising a coupling and an end separated by an electrically-insulating gap region. The end of the cap may be connected to a grounding system for the drill rig.Type: ApplicationFiled: May 3, 2017Publication date: August 17, 2017Inventors: Aaron W. LOGAN, Daniel W. AHMOYE, David A. SWITZER, Jili Jerry LIU
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Patent number: 9664037Abstract: An assembly for receiving telemetry signals from downhole equipment is located at a top end of a drill string above a drill rig floor. The assembly may be configured to receive multiple types of telemetry signals, for example, two or more of electromagnetic telemetry, mud pulse telemetry and drill string acoustic telemetry signals. The assembly may comprise a cap comprising a coupling and an end separated by an electrically insulating gap region. The end of the cap may be connected to a grounding system for the drill rig.Type: GrantFiled: March 7, 2014Date of Patent: May 30, 2017Assignee: Evolution Engineering Inc.Inventors: Aaron W. Logan, Daniel W. Ahmoye, David A. Switzer, Jili Jerry Liu
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Patent number: 9644471Abstract: A component mounting apparatus for holding a rigid component in a downhole bore or a downhole collar based application includes a first body including first and second parallel spaced apart component holders disposed in a first common plane and a first support connecting the component holders together. The first and second parallel spaced apart component holders are operable to receive and grip a rigid component between the first and second parallel spaced apart component holders. Various component mounting assemblies and configurations may be realized using the component mounting apparatus described. The component mounting apparatus and various mounting assemblies may be used to mount a printed circuit board in a cylindrical enclosure or tubular housing, for example.Type: GrantFiled: December 6, 2012Date of Patent: May 9, 2017Assignee: EVOLUTION ENGINEERING INC.Inventors: Aaron W. Logan, Jili (Jerry) Liu, David A Switzer, Justin C. Logan
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Publication number: 20160194953Abstract: A range of apparatus and methods for providing local and long range data telemetry within a wellbore is described. These apparatus and methods may be combined in a wide variety of ways. In some embodiments data is transmitted across a gap in a drill string using signals of a higher frequency for which an electrical impedance of the gap or of a filter connected across the gap is low. Low-frequency EM telemetry signals may be applied across the gap. The gap and any filter connected across the gap present a high impedance to the low-frequency EM telemetry signals. The described technology may be applied for transferring sensor readings between downhole electrical packages. In some embodiments sensors are electrically connected across electrically insulating gaps in the drill string.Type: ApplicationFiled: September 5, 2013Publication date: July 7, 2016Applicant: EVOLUTION ENGINEERING INC.Inventors: David A. SWITZER, Aaron W. LOGAN, Jili (Jerry) LIU, Mojtaba KAZEMI MIRAKI
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Publication number: 20160010446Abstract: An assembly for receiving telemetry signals from downhole equipment is located at a top end of a drill string above a drill rig floor. The assembly may be configured to receive multiple types of telemetry signals, for example, two or more of electromagnetic telemetry, mud pulse telemetry and drill string acoustic telemetry signals. The assembly may comprise a cap comprising a coupling and an end separated by an electrically insulating gap region. The end of the cap may be connected to a grounding system for the drill rig.Type: ApplicationFiled: March 7, 2014Publication date: January 14, 2016Applicant: Evolution Engineering Inc.Inventors: Aaron W. LOGAN, Daniel W. AHMOYE, David A. SWITZER, Jili Jerry LIU
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Publication number: 20150345282Abstract: A component mounting apparatus for holding a rigid component in a downhole bore or a downhole collar based application includes a first body including first and second parallel spaced apart component holders disposed in a first common plane and a first support connecting the component holders together. The first and second parallel spaced apart component holders are operable to receive and grip a rigid component between the first and second parallel spaced apart component holders. Various component mounting assemblies and configurations may be realized using the component mounting apparatus described. The component mounting apparatus and various mounting assemblies may be used to mount a printed circuit board in a cylindrical enclosure or to bular housing, for example.Type: ApplicationFiled: December 6, 2012Publication date: December 3, 2015Inventors: Aaron W. LOGAN, Jili (Jerry) LIU, David A. SWITZER, Justin C. LOGAN
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Publication number: 20150315900Abstract: A method for using a downhole probe. The method comprises providing a probe, at least one vertical cross section of the probe having an area of at least pi inches squared. The method further comprises inserting the probe into a bore of a drill collar and passing a drilling fluid through the bore of drill collar at a flow velocity of less than 41 feet per second.Type: ApplicationFiled: December 7, 2012Publication date: November 5, 2015Inventors: Jili (Jerry) LIU, Patrick R. DERKACZ, Aaron W. LOGAN, Justin C. LOGAN, David A. SWITZER
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Publication number: 20150285062Abstract: An assembly for use in subsurface drilling includes a downhole probe having an EM telemetry signal generator and electrical contacts for carrying telemetry signals from the EM telemetry signal generator to first and second parts of a gap sub in a drill string. An outside surface of the probe and an inside surface of the gap sub are covered with layers of electrically-insulating material. Electrical conduction paths internal to the gap sub are removed, thereby increasing efficiency of EM telemetry.Type: ApplicationFiled: November 6, 2013Publication date: October 8, 2015Inventors: Aaron W. Logan, Patrick R. Derkacz, Justin C. Logan, David A. Switzer, Jili (Jerry) Liu, Mojtaba Kazemi