Patents by Inventor David Switzer

David Switzer 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).

  • Patent number: 10443374
    Abstract: A wireless communications system for a downhole drilling operation comprises surface communications equipment and a downhole telemetry tool. The surface communications equipment comprises a surface EM communications module with an EM downlink transmitter configured to transmit an EM downlink transmission at a frequency between 0.01 Hz and 0.1 Hz. The downhole telemetry tool is mountable to a drill string and has a downhole electromagnetic (EM) communications unit with an EM downlink receiver configured to receive the EM downlink transmission. The downhole EM communications unit can further comprise an EM uplink transmitter configured to transmit an EM uplink transmission at a frequency greater than 0.5 Hz, in which case the surface EM communications module further comprises an EM uplink receiver configured to receive the EM uplink transmission.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: October 15, 2019
    Assignee: Evolution Engineering Inc.
    Inventors: David A. Switzer, Jili Liu, Mingdong Xu, Mojtaba Kazemi Miraki, Aaron W. Logan
  • Publication number: 20190284930
    Abstract: A downhole system has a plurality of telemetry systems and a control system configured to obtain information from one or more sensors and transmit that information on one or more of the plurality of telemetry systems. The configuration of a controller may be changed so as to change which information is transmitted on a given telemetry system and how the information is to be transmitted on the given telemetry system.
    Type: Application
    Filed: March 27, 2019
    Publication date: September 19, 2019
    Inventors: Aaron W. LOGAN, David A. SWITZER, Jili LIU, Justin C. LOGAN, Mingdong XU
  • Patent number: 10400520
    Abstract: An insulating collar for a gap sub assembly for electromagnetic (EM) telemetry used in downhole drilling is disclosed. The gap sub assembly comprises a female member comprising a female mating section and a male member comprising a male mating section and a gap section. The male mating section is matingly received within the female mating section and electrically isolated therefrom. The insulating collar is positioned on the gap section. The collar is made up of a framework with a plurality of discrete bodies spaced about the framework and a portion of each of the discrete bodies protrudes above the framework. Either the framework or the discrete bodies are made of an electrical insulator material to electrically isolate one end of the collar from the other end of the collar. The collar therefore electrically isolates the male member from the female member and the male member, female member and insulating collar function as the “gap sub” for EM telemetry.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: September 3, 2019
    Assignee: Evolution Engineering Inc.
    Inventors: Aaron W. Logan, Daniel W. Ahmoye, David A. Switzer, Justin C. Logan, Patrick R. Derkacz, Mojtaba Kazemi Miraki
  • Publication number: 20190218908
    Abstract: 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: Application
    Filed: December 21, 2018
    Publication date: July 18, 2019
    Inventors: Aaron W. LOGAN, Daniel W. AHMOYE, David A. SWITZER, Jili Jerry LIU
  • Patent number: 10352111
    Abstract: An assembly for use in subsurface drilling includes a downhole probe supported in a drill string section by centralizing features that are integral with the drill string section. A bore wall of the drill string section is fluted to provide inward contact points that support the downhole probe. The downhole probe may be supported for substantially its entire length. A vibration damping and/or electrically insulating material may optionally be provided between the downhole probe and the drill string section.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: July 16, 2019
    Assignee: Evolution Engineering Inc.
    Inventors: Aaron W. Logan, Justin C. Logan, Patrick R. Derkacz, David A. Switzer
  • Publication number: 20190203589
    Abstract: A downhole system has a plurality of telemetry systems and a control system configured to obtain information from one or more sensors and transmit that information on one or more of the plurality of telemetry systems. The configuration of a controller may be changed so as to change which information is transmitted on a given telemetry system and how the information is to be transmitted on the given telemetry system.
    Type: Application
    Filed: March 7, 2019
    Publication date: July 4, 2019
    Inventors: Aaron W. LOGAN, David A. SWITZER, Jili LIU, Justin C. LOGAN, Mingdong XU
  • Patent number: 10329901
    Abstract: A telemetry system useful in drilling operations receives and displays telemetry data. The telemetry system also determines and displays information regarding the status of the telemetry transmission. The telemetry system may display which data will be updated next, when the update is expected to be complete, and how reliable is the currently displayed data. The system can facilitate efficient drilling operations.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: June 25, 2019
    Assignee: Evolution Engineering Inc.
    Inventors: David A. Switzer, Sheng Xu, Aaron W. Logan, Anquan Men, Kurtis K. L. West, Barry D. Buternowsky, Angelica J. B. Francoeur, Grant E. Harding, Gilles A. Pelletier, Sabrina M. Huston
  • Publication number: 20190154866
    Abstract: A vehicle for detecting fields relevant to the suitability of a location for EM telemetry reception. The vehicle may include a magnetometer, a voltage monitoring system and position sensors. A wireless transmitter may transmit readings from the meters, monitoring systems and/or sensors to a receiver. The vehicle may include equipment for inserting or removing ground conductors for use in receiving electromagnetic telemetry signals. The vehicle may be driven or may drive itself autonomously. The vehicle may obtain measurements of magnetic field and/or potential differences at spaced apart locations along a path. Data obtained by the vehicle may be analyzed to identify hot spots. After selecting hot spots, the vehicle may be configured to insert ground conductors at selected locations within the hot spots. After installing ground rods, the vehicle may be configured to continuously monitor the area to maintain an optimum configuration of ground conductors.
    Type: Application
    Filed: November 16, 2018
    Publication date: May 23, 2019
    Inventors: David A. SWITZER, Aaron W. LOGAN
  • Patent number: 10287871
    Abstract: An assembly for use in subsurface drilling includes a downhole probe supported by a locking mechanism with a bore of a drill string section. The probe comprises a first spider and a second spider at the uphole and downhole sections of the probe. The locking mechanism secures the probes in the bore against axial and rotational movement relative the drill string section.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: May 14, 2019
    Assignee: Evolution Engineering Inc.
    Inventors: Aaron W. Logan, Justin C. Logan, David A. Switzer, Patrick R. Derkacz
  • Patent number: 10280741
    Abstract: Data is communicated from sensors at a downhole location near a drill bit to surface equipment. Communication to the surface equipment may be direct or may pass through a series of nodes. The nodes in some cases are intelligently reconfigured to achieve desired data rates, achieve power management goals, and/or compensate for failed nodes.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: May 7, 2019
    Assignee: Evolution Engineering Inc.
    Inventors: Patrick R. Derkacz, Aaron William Logan, Justin C. Logan, Jili Liu, David A. Switzer, Robert Harris, Barry Daniel Buternowsky, Kurtis West
  • Patent number: 10253621
    Abstract: A downhole system has a plurality of telemetry systems and a control system configured to obtain information from one or more sensors and transmit that information on one or more of the plurality of telemetry systems. The configuration of a controller may be changed so as to change which information is transmitted on a given telemetry system and how the information is to be transmitted on the given telemetry system.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: April 9, 2019
    Assignee: Evolution Engineering Inc.
    Inventors: Aaron W. Logan, David A. Switzer, Jili Liu, Justin C. Logan, Mingdong Xu
  • Patent number: 10233747
    Abstract: An electromagnetic telemetry system adjusts telemetry parameters which may include carrier frequency, signal amplitude and/or data encoding protocol to achieve reliable data transmission and to conserve power. In some embodiments, sweep signals transmit a range of carrier frequencies and the parameters are determined in part by analyzing the received sweep signals. In some embodiments, different parameters are selected automatically based on a mode of drilling.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: March 19, 2019
    Assignee: Evolution Engineering Inc.
    Inventors: Jili Liu, Mingdong Xu, Aaron W. Logan, David A. Switzer, Monica E. Varga, Mojtaba Kazemi Miraki
  • Patent number: 10214971
    Abstract: Adjustment of the angle of a bent sub or other steering feature in a drill string relative to a reference angle of a downhole sensor is facilitated by a rotatable coupling between the bend sub and the sensor. The rotatable coupling may be rotated to align the high side with a reference indicia and locked at the set angle. Calibration of the sensor is facilitated and opportunities for certain measurement errors are eliminated. An embodiment provides a locking mechanism comprising tapered locking fingers which are clamped against a surface by a tapered collar. Rows of ceramic balls retained in circumferential channels may be provided to permit rotation while carrying tensile and compressional forces.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: February 26, 2019
    Assignee: Evolution Engineering Inc.
    Inventors: Aaron W. Logan, Patrick R. Derkacz, Justin C. Logan, David A. Switzer
  • Patent number: 10215021
    Abstract: A measurement-while-drilling (MWD) telemetry system comprises a downhole MWD telemetry tool comprising a mud pulse (MP) telemetry unit and an electromagnetic (EM) telemetry unit. The MWD telemetry tool can be configured to transmit data in an EM-only telemetry mode using only the EM telemetry unit, in an MP-only mode using only the MP telemetry unit, or in a concurrent telemetry mode using both the EM and MP telemetry units concurrently. When transmitting data in the concurrent telemetry mode, the telemetry tool can be configured to transmit in a concurrent confirmation mode wherein the same telemetry data is transmitted by each of the EM and MP telemetry units, or in a concurrent shared mode wherein some of the telemetry data is transmitted by the EM telemetry unit, and the rest of the telemetry data is transmitted by the MP telemetry unit. The telemetry tool can be programmed to change its operating telemetry mode in response to a downlink command sent by an operator at surface.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: February 26, 2019
    Assignee: Evolution Engineering Inc.
    Inventors: David A. Switzer, Jili Liu, Aaron W. Logan, Mingdong Xu
  • Publication number: 20190048713
    Abstract: Data is communicated from sensors at a downhole location near a drill bit to surface equipment. Communication to the surface equipment may be direct or may pass through a series of nodes. The nodes in some cases are intelligently reconfigured to achieve desired data rates, achieve power management goals, and/or compensate for failed nodes.
    Type: Application
    Filed: October 17, 2018
    Publication date: February 14, 2019
    Inventors: Patrick R. DERKACZ, Aaron William LOGAN, Justin C. LOGAN, Jili LIU, David A. SWITZER, Robert HARRIS, Barry Daniel BUTERNOWSKY, Kurtis WEST
  • Patent number: 10202844
    Abstract: Methods, techniques, and systems for transmitting a data frame of an electromagnetic (EM) telemetry signal to or from a downhole location can be performed using multi-channel transmissions in which at least two different channels at two different frequencies are used to send a long header and the data frame. At least a portion of the long header is transmitted at a first frequency, and at least a portion of the data frame and any remaining portion of the long header not transmitted at the first frequency are transmitted at one or more additional frequencies different from each other and the first frequency. In one example, only two channels are used: one channel is used to transmit all of the long header, another channel is used to transmit all of the data frame, and either of the channels is used to transmit an identifier identifying the type of the data frame.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: February 12, 2019
    Assignee: Evoution Engineering Inc.
    Inventors: David A. Switzer, Jili Liu, Mingdong Xu, Aaron W. Logan
  • Patent number: 10196892
    Abstract: 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: Grant
    Filed: May 3, 2017
    Date of Patent: February 5, 2019
    Assignee: Evolution Engineering Inc.
    Inventors: Aaron W. Logan, Daniel W. Ahmoye, David A. Switzer, Jili Jerry Liu
  • Publication number: 20190003302
    Abstract: A method for establishing downlink telemetry communication to a downhole system involves placing into a drillstring a telemetry transcoder, and advancing the drillstring so the telemetry transcoder is below the surface. The method then transmits downlink EM telemetry signals from surface equipment. These signals are received at the telemetry transcoder which retransmits the signals as mud pulse signals. The mud pulse signals are received at the downhole system.
    Type: Application
    Filed: January 27, 2017
    Publication date: January 3, 2019
    Inventors: Aaron W. LOGAN, Justin C. LOGAN, Barry D. BUTERNOWSKY, Steven D. MCLAWCHLIN, David A. SWITZER, Kurtis Kenneth Lee WEST
  • Publication number: 20180371899
    Abstract: A measurement-while-drilling (MWD) telemetry system comprises a downhole MWD telemetry tool comprising a mud pulse (MP) telemetry unit and an electromagnetic (EM) telemetry unit. The MWD telemetry tool can be configured to transmit data in an EM-only telemetry mode using only the EM telemetry unit, in an MP-only mode using only the MP telemetry unit, or in a concurrent telemetry mode using both the EM and MP telemetry units concurrently. When transmitting data in the concurrent telemetry mode, the telemetry tool can be configured to transmit in a concurrent confirmation mode wherein the same telemetry data is transmitted by each of the EM and MP telemetry units, or in a concurrent shared mode wherein some of the telemetry data is transmitted by the EM telemetry unit, and the rest of the telemetry data is transmitted by the MP telemetry unit. The telemetry tool can be programmed to change its operating telemetry mode in response to a downlink command sent by an operator at surface.
    Type: Application
    Filed: August 3, 2018
    Publication date: December 27, 2018
    Inventors: David A. SWITZER, Jili LIU, Aaron W. LOGAN, Mingdong XU
  • Patent number: D848008
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: May 7, 2019
    Assignee: SARINGER RESEARCH INC.
    Inventors: John H. Saringer, Angel Leonardo Guerrero, Jeffrey David Switzer