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公开(公告)号：US20180216457A1
公开(公告)日：2018-08-02
申请号：US15320014
申请日：2015-05-08
发明人： Patrick R. DERKACZ , Aaron William LOGAN , Justin C. LOGAN , Kurtis WEST , Jili (Jerry) LIU , Barry D. BUTERNOWSKY
CPC分类号： E21B47/122 , E21B17/003 , E21B17/028 , E21B17/042 , H04B5/0081
摘要： 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.
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公开(公告)号：US20180087374A1
公开(公告)日：2018-03-29
申请号：US15564578
申请日：2016-04-20
CPC分类号： E21B47/122 , E21B17/003 , H04Q9/00 , H04Q2209/40
摘要： Method and apparatus for transmitting data to or from a downhole tool while the tool is at or near the surface using a wireless data link. A downhole tool comprising a gap sub having a tubular section with first and second longitudinally spaced-apart electrically-conducting parts that are electrically isolated from each other. An electromagnetic telemetry transmitter is connected to apply a potential difference between the first and second electrically conductive parts. A single-wire bus provides a data connection between one of the first and second electrically conductive parts and a data processor.
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公开(公告)号：US20170199302A1
公开(公告)日：2017-07-13
申请号：US15320290
申请日：2015-06-10
发明人： Aaron William LOGAN , Patrick R. DERKACZ , Justin C. LOGAN , Barry Daniel BUTERNOWSKY , Mojtaba KAZEMI MIRAKI
摘要： A downhole system comprises a main sensor, such as a gamma sensor, and a backup sensor. The backup sensor may be of a different type from the main sensor. In some embodiments the backup sensor is a high reliability sensor that may have a different sensitivity from the main sensor. The system operates both the main and backup sensors and generates calibration data for the backup sensor. If the main sensor fails the calibration data may be applied to process data from the backup sensor to yield an estimate of the data that the main sensor would have yielded if it had remained operational. The calibration data may compensate for temperature variations and/or temporal drift, for example.
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公开(公告)号：US20160160637A1
公开(公告)日：2016-06-09
申请号：US15044291
申请日：2016-02-16
发明人： David A. SWITZER , Jili LIU , Aaron William LOGAN , Mingdong XU
CPC分类号： E21B47/18 , E21B47/12 , E21B47/122
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：US20170122040A1
公开(公告)日：2017-05-04
申请号：US15320007
申请日：2015-05-08
CPC分类号： E21B47/122 , E21B4/02
摘要： A measurement-while-drilling system is integrated into a mud motor. The measurement-while-drilling system includes sensors which may include inclination and tool face sensors, for example, located near to the drill bit. Data from the near bit sensors is transmitted by way of telemetry, for example, EM telemetry. The mud motor may include a rotating electrical coupling which provides good electrical productivity between an uphole coupling of the mud motor and the rotating mandrel. The EM telemetry transmitter may include an electrically-insulating gap integrated with the mandrel of the mud motor.
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公开(公告)号：US20170045930A1
公开(公告)日：2017-02-16
申请号：US15236288
申请日：2016-08-12
CPC分类号： G06F1/3287 , E21B47/124 , G06F11/00 , G06F12/0246 , G06F2212/7201 , G06F2212/7204
摘要： A data logger comprising a first data store, a second data store and a controller connected to receive output from a temperature sensor indicating a temperature of the first data store. The controller may be configured to write data to the first data store and to switch to writing the data on the second data store if the indicated temperature of the first data store exceeds a first threshold temperature. The first and second data stores may be of different types. Upon the temperature of the first data store transitioning from above the first threshold to below the first threshold, the controller may be configured to copy any data recorded in the second data store to the first data store.
摘要翻译： 数据记录器，包括第一数据存储器，第二数据存储器和控制器，连接器用于从温度传感器接收指示第一数据存储器的温度的输出。 如果第一数据存储器的指示温度超过第一阈值温度，则控制器可以被配置为将数据写入第一数据存储器并切换到将数据写入第二数据存储器。 第一和第二数据存储器可以是不同类型的。 当第一数据存储器的温度从高于第一阈值转换到低于第一阈值时，控制器可以被配置为将记录在第二数据存储器中的任何数据复制到第一数据存储器。
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公开(公告)号：US20160341034A1
公开(公告)日：2016-11-24
申请号：US15230220
申请日：2016-08-05
发明人： David A. SWITZER , Jili LIU , Aaron William LOGAN , Mingdong XU
CPC分类号： E21B47/18 , E21B47/12 , E21B47/122
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.
摘要翻译： 遥测测量系统包括井下MWD遥测工具，包括泥浆脉冲（MP）遥测单元和电磁（EM）遥测单元。 MWD遥测工具可以配置为仅使用EM遥测单元，仅使用MP遥测单元的MP-only模式或使用EM和MP遥测的并发遥测模式，仅在EM-only遥测模式下传输数据 单位同时进行。 当以并行遥测模式发送数据时，遥测工具可以被配置为以并行确认模式进行传输，其中相同的遥测数据由EM和MP遥测单元中的每一个发射，或者以并发共享模式发送，其中一些遥测 数据由EM遥测单元传输，其余遥测数据由MP遥测单元传输。 可以对遥测工具进行编程，以响应于操作者在表面发送的下行链路命令来改变其操作遥测模式。
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公开(公告)号：US20190048713A1
公开(公告)日：2019-02-14
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
IPC分类号： E21B47/12
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：US20170268330A1
公开(公告)日：2017-09-21
申请号：US15320294
申请日：2015-05-08
CPC分类号： E21B47/122 , E21B17/003 , E21B47/00 , E21B49/00 , G01V3/20 , G08C19/12
摘要： A method and apparatus for downhole data transmission. The method comprising monitoring electrical impedance properties of a downhole formation by applying an electrical signal between a first portion and a second portion of a drill string that are electrically insulated from each other by an insulating portion, selecting a frequency for transmitting data by electromagnetic telemetry based at least in part on the monitored electrical impedance and transmitting the data by encoding the data in a waveform having the selected frequency and applying the waveform between the first portion and the second portion of the drill string.
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公开(公告)号：US20170211378A1
公开(公告)日：2017-07-27
申请号：US15321675
申请日：2015-05-08
发明人： Patrick R. DERKACZ , Aaron William LOGAN , Justin C. LOGAN , Jili LIU , David A. SWITZER , Robert HARRIS , Barry Daniel BUTERNOWSKY , Kurtis WEST
IPC分类号： E21B47/12
CPC分类号： E21B47/122 , E21B47/04
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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