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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:US20190003302A1
公开(公告)日:2019-01-03
申请号:US16066031
申请日:2017-01-27
发明人: Aaron W. LOGAN , Justin C. LOGAN , Barry D. BUTERNOWSKY , Steven D. MCLAWCHLIN , David A. SWITZER , Kurtis Kenneth Lee WEST
摘要: 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.
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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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