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1. 发明公开

EP3023579A2 METHOD AND SYSTEM FOR TRANSMITTING A DATA FRAME OF AN ELECTROMAGNETIC TELEMETRY SIGNAL TO OR FROM A DOWNHOLE LOCATION 审中-公开
标题翻译：用于将电磁遥测信号的数据帧发送到井下位置或从井下位置发送的方法和系统
公开(公告)号：EP3023579A2
公开(公告)日：2016-05-25
申请号：EP15196476.4
申请日：2014-05-02
申请人： Evolution Engineering Inc.
发明人： Switzer, David , Liu, Jili , Xu, Mingdong , Logan, Aaron
IPC分类号： E21B47/13 , H04J1/00 , G08C19/14 , H04J9/00 , H04L7/06
CPC分类号： E21B47/122 , G08C19/14 , H04J9/00 , H04L5/06 , H04L7/06
摘要： 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 multichannel 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.
摘要翻译：用于将电磁（EM）遥测信号的数据帧传输到井下位置或从井下位置传输的方法，技术和系统可以使用多通道传输来执行，其中使用两个不同频率的至少两个不同通道来发送长头部，并且数据帧。以第一频率发送长头部的至少一部分，并且以第一频率不发送的数据帧的至少一部分和长头部的任何剩余部分以彼此不同的一个或多个附加频率发送和第一个频率。在一个例子中，仅使用两个信道：一个信道用于发送所有的长头，另一个信道用于发送所有的数据帧，并且任一个信道用于发送标识符的类型的标识符数据帧。

2. 发明公开

EP3000961A1 METHOD OF OPERATING A MUD PULSE TELEMETRY APPARATUS WITH A PRESSURE TRANSDUCER 审中-公开
标题翻译： VERFAHREN ZUM BETREIBEN EINER DRUCKIMPULSTELEMETRIEVORRICHTUNG MIT EINEM DRUCKAUFNEHMER
公开(公告)号：EP3000961A1
公开(公告)日：2016-03-30
申请号：EP15178390.9
申请日：2013-12-17
申请人： Evolution Engineering Inc.
发明人： Logan, Aaron , Liu, Jili , Switzer, David , Logan, Justin
IPC分类号： E21B47/18 , E21B47/06
CPC分类号： E21B47/187 , E21B34/06 , E21B47/06 , E21B47/18
摘要： A method of operating a dual pulse height fluid pressure pulse generator of a downhole measurement-while-drilling telemetry tool, the pulse generator operable to flow a drilling fluid in a full flow configuration to produce no pressure pulse, a reduced flow configuration to produce a high amplitude pressure pulse and an intermediate flow configuration to produce a low amplitude pressure pulse, the method comprising:
(a) operating the pulse generator to produce the no pressure pulse, the high amplitude pressure pulse and the low amplitude pressure pulse and measuring the pressures of the no pressure pulse, high amplitude pressure pulse and low amplitude pressure pulse;
(b) determining an amplitude of the high amplitude pressure pulse and an amplitude of the low amplitude pressure pulse from the measured pressures;
(c) comparing the determined amplitudes to a low amplitude reference pressure and a high amplitude reference pressure; and
(d) operating the pulse generator between the full and intermediate flow configurations in a low amplitude pulse mode to transmit a telemetry signal to surface only when the determined amplitude of the low amplitude pressure pulse is above the low amplitude reference pressure; or, operating the pulse generator between the full and reduced flow configurations in a high amplitude pulse mode to transmit a telemetry signal to surface only when the determined amplitude of the high amplitude pressure pulse is below the high amplitude reference pressure.
摘要翻译：一种操作井下测量同时钻探遥测工具的双脉冲高度流体压力脉冲发生器的方法，所述脉冲发生器可操作以使钻井流体以全流动结构流动以产生无压力脉冲，减小的流动结构以产生高振幅压力脉冲和中间流动配置以产生低振幅压力脉冲，该方法包括：（a）操作脉冲发生器以产生无压脉冲，高振幅压力脉冲和低振幅压力脉冲并测量压力的无压脉冲，高振幅压力脉冲和低振幅压力脉冲; （b）根据测量的压力确定高振幅压力脉冲的振幅和低振幅压力脉冲的振幅; （c）将确定的振幅与低振幅参考压力和高幅度参考压力进行比较; 以及（d）仅在所确定的低振幅压力脉冲的振幅高于低振幅参考压力时，以低幅度脉冲模式在完全和中间流动配置之间操作脉冲发生器以将遥测信号传输到表面; 或者，在高幅度脉冲模式下，将脉冲发生器操作在全流量配置和减少流量配置之间，以便仅当所确定的高振幅压力脉冲的振幅低于高幅度参考压力时才将遥测信号传输到表面。

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