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公开(公告)号：US11359483B2
公开(公告)日：2022-06-14
申请号：US17304267
申请日：2021-06-17
发明人： Aaron W. Logan , David A. Switzer , Jili Liu , Justin C. Logan , Mingdong Xu
摘要： 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.
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公开(公告)号：US10729029B2
公开(公告)日：2020-07-28
申请号：US15480253
申请日：2017-04-05
发明人： Aaron W. Logan , Jili Liu , David A. Switzer , Justin C. Logan
摘要： 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.
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公开(公告)号：US10443374B2
公开(公告)日：2019-10-15
申请号：US15906973
申请日：2018-02-27
摘要： 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. More particularly, the downhole EM uplink transmitter can be configured to transmit the EM uplink transmission at a frequency that is at least ten times higher than the EM downlink transmission frequency.
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公开(公告)号：US10280741B2
公开(公告)日：2019-05-07
申请号：US16163168
申请日：2018-10-17
发明人： Patrick R. Derkacz , Aaron William Logan , Justin C. Logan , Jili Liu , David A. Switzer , Robert Harris , Barry Daniel Buternowsky , Kurtis West
摘要： 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.
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公开(公告)号：US10253621B2
公开(公告)日：2019-04-09
申请号：US15433626
申请日：2017-02-15
发明人： Aaron W. Logan , David A. Switzer , Jili Liu , Justin C. Logan , Mingdong Xu
摘要： 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.
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公开(公告)号：US10215021B2
公开(公告)日：2019-02-26
申请号：US16054227
申请日：2018-08-03
发明人： David A. Switzer , Jili Liu , Aaron W. Logan , Mingdong Xu
摘要： 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.
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公开(公告)号：US09988855B2
公开(公告)日：2018-06-05
申请号：US15586161
申请日：2017-05-03
发明人： Aaron W. Logan , Daniel W. Ahmoye , David A. Switzer , Justin C. Logan , Patrick R. Derkacz , Mojtaba Kazemi Miraki
CPC分类号： E21B17/006 , E21B17/003 , E21B17/028 , E21B47/122
摘要： An electromagnetic telemetry signal generating assembly comprises a first section of drill string, a second section of drill string, a gap sub configured to insulate the first section from the second section, and a power source configured to provide a first voltage to a control circuit. The control circuit is configured to drive a second voltage between the sections of drill string. The gap sub provides a gap of at least 12 inches (30 cm). The second voltage may be different than the first voltage.
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公开(公告)号：US09874092B2
公开(公告)日：2018-01-23
申请号：US15320206
申请日：2015-06-22
IPC分类号： E21B47/18
CPC分类号： E21B47/18 , E21B47/182 , E21B47/187
摘要： A fluid pressure pulse generator for a downhole telemetry tool comprising a stator and a rotor. The stator comprises a stator body and a plurality of radially extending stator projections spaced around the stator body, whereby adjacently spaced stator projections define stator flow channels extending therebetween. The rotor comprises a rotor body and a plurality of radially extending rotor projections spaced around the rotor body. The rotor projections are axially adjacent to the stator projections and the rotor is rotatable relative to the stator such that the rotor projections move in and out of fluid communication with the stator flow channels to create fluid pressure pulses in fluid flowing through the stator flow channels. The rotor projections may be positioned downhole of the stator projections and include a self-correction mechanism to move the rotor to an open flow position where the rotor projections are out of fluid communication with the stator flow channels if the telemetry tool fails. The stator body may be configured to fixedly attach to a pulser assembly of the downhole telemetry tool and the rotor may be configured to fixedly attach to a driveshaft of the pulser assembly with the driveshaft and/or the rotor body received within the bore of the stator body such that the stator projections are positioned between the pulser assembly and the rotor projections.
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公开(公告)号：US09874083B2
公开(公告)日：2018-01-23
申请号：US14650511
申请日：2013-12-18
IPC分类号： E21B47/00 , E21B47/01 , E21B33/038 , E21B47/12 , H01R13/523
CPC分类号： E21B47/01 , E21B33/0385 , E21B47/12 , H01R13/523
摘要： Disclosed are downhole probes in which electrical interconnections between different modules are achieved without wiring harnesses. Modules may be coupled to one another and/or to bulkheads in the probe my couplings that provide substantially rigid couplings. The couplings may be configured to connect together only in one orientation. Electrical connectors may be fixed relative to components of the couplings so that the electrical connectors are automatically aligned for connection by the couplings.
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公开(公告)号：US09732608B2
公开(公告)日：2017-08-15
申请号：US14189901
申请日：2014-02-25
发明人： Aaron W. Logan , David A. Switzer , Jili Liu , Justin C. Logan
CPC分类号： E21B47/122 , E21B47/024 , E21B47/06 , E21B47/18 , E21B49/00
摘要： A telemetry system with a plurality of controllers and telemetry systems, where the controllers are 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.
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