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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：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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公开(公告)号：US09708903B2
公开(公告)日：2017-07-18
申请号：US14649507
申请日：2013-12-06
IPC分类号： G01P15/00 , G01P15/18 , E21B47/024 , E21B47/12 , E21B47/01
CPC分类号： E21B47/022 , E21B47/011 , E21B47/024 , E21B47/12 , G01P15/00 , G01P15/18
摘要： The embodiments described herein generally relate to a method and apparatus for providing a back up system of Directional and Inclination (D&I) information to be gathered and transmitted in addition to primary D&I sensors currently employed in industry. A downhole probe assembly including primary sensors, back up sensors and a controller is disclosed. The primary sensors comprise primary accelerometers and primary magnetometers configured to gather information relating to each of orthogonal axes X, Y and Z. The back up sensors comprise back up accelerometers configured to gather information relating to each of orthogonal axes X, Y and Z, the back up accelerometers being solid state accelerometers. The controller is in electrical communication with the primary sensors and the back up sensors. The controller is configured to receive and process information from the primary sensors and the back up sensors so that information from the back up accelerometers can be used when one or more of the primary accelerometers fail, which may allow drilling operations to continue despite such failure.
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9.发明授权Downhole telemetry signal modulation using pressure pulses of multiple pulse heights 有权使用多个脉冲高度的压力脉冲进行井下遥测信号调制公开(公告)号：US09574441B2
公开(公告)日：2017-02-21
申请号：US14653229
申请日：2013-12-13
发明人： Jili Liu , Mingdong Xu , David A. Switzer , Aaron W. Logan
CPC分类号： E21B47/187 , H04B11/00 , H04B13/02 , H04L27/04 , H04L27/34
摘要： A method for modulating a downhole telemetry signal uses a fluid pressure pulse generator that generates pressure pulses of multiple pulse heights in a drilling fluid. The method comprises: converting measurement data into a bitstream comprising symbols of a selected symbol set; encoding the bitstream into a pressure pulse telemetry signal using a modulation technique that includes amplitude shift keying, wherein each symbol of the selected symbol set is assigned a pressure pulse having a unique amplitude; and generating pressure pulses in the drilling fluid corresponding to the telemetry signal. Alternatively, the method can comprise a modulation technique that includes amplitude shift keying and phase shift keying and wherein each symbol of the selected symbol set is assigned a pressure pulse having a unique combination of amplitude and phase.
摘要翻译： 用于调制井下遥测信号的方法使用在钻井液中产生多个脉冲高度的压力脉冲的流体压力脉冲发生器。 该方法包括：将测量数据转换成包含所选符号组的符号的比特流; 使用包括幅移键控的调制技术将比特流编码为压力脉冲遥测信号，其中所选择的符号组的每个符号被分配具有唯一振幅的压力脉冲; 并产生对应于遥测信号的钻井液中的压力脉冲。 或者，该方法可以包括调制技术，其包括幅移键控和相移键控，并且其中所选符号组的每个符号被分配具有幅度和相位的唯一组合的压力脉冲。
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公开(公告)号：US09494035B2
公开(公告)日：2016-11-15
申请号：US14440670
申请日：2013-11-06
发明人： Aaron W. Logan , David A. Switzer , Justin C. Logan , Jili Liu
摘要： A fluid pressure pulse generator comprising a stator and rotor that can be used in measurement while drilling using mud pulse or pressure pulse telemetry is disclosed. The stator comprises a stator body with a circular opening therethrough and the rotor comprises a circular rotor body rotatably received in the circular opening of the stator body. One of the stator body or the rotor body comprises one or more than one fluid opening for flow of fluid therethrough and the other of the stator body or the rotor body comprises one or more than one full flow chamber. The rotor is rotatable between a full flow configuration whereby the full flow chamber and the fluid opening align so that fluid flows from the full flow chamber through the fluid opening, and a reduced flow configuration whereby the full flow chamber and the fluid opening are not aligned. The flow of fluid through the fluid opening in the reduced flow configuration is less than the flow of fluid through the fluid opening in the full flow configuration thereby generating a fluid pressure pulse.
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