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1. 发明申请

WO2018152648A1 ELECTROMAGNETIC COMMUNICATIONS SYSTEM AND METHOD FOR A DRILLING OPERATION 审中-公开
公开(公告)号：WO2018152648A1
公开(公告)日：2018-08-30
申请号：PCT/CA2018/050220
申请日：2018-02-26
申请人： EVOLUTION ENGINEERING INC
发明人： BUTERNOWSKY, Barry Daniel , WEST, Kurtis Kenneth Lee , LIU, Jili , LOGAN, Aaron William , YOUSEFI KOOPAEI, Mahdi , MARTIN, Vincent Raymond , MASSOUD, Ali Ahmed Ali , SWITZER, David Arthur Sidney , XU, Mingdong , KAZEMI MIRAKI, Mojtaba
IPC分类号： E21B47/13 , G08C17/02 , H04B7/24 , H04L25/02
摘要： A wireless communications system for a downhole drilling operation comprises a drill string, 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 through at least a portion of the drill string an EM downlink transmission at a frequency between 0.5 Hz and 180 kHz. 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 between 0.5 Hz and 180 kHz, in which case the surface EM communications module further comprises an EM uplink receiver configured to receive the EM uplink transmission.

2. 发明申请

WO2014094150A1 DOWNHOLE TELEMETRY SIGNAL MODULATION USING PRESSURE PULSES OF MULTIPLE PULSE HEIGHTS 审中-公开
标题翻译：使用多个脉冲高度的压力脉冲进行井下电信号调制
公开(公告)号：WO2014094150A1
公开(公告)日：2014-06-26
申请号：PCT/CA2013/050966
申请日：2013-12-13
申请人： EVOLUTION ENGINEERING INC.
发明人： LIU, Jili , XU, Mingdong , SWITZER, David, A. , LOGAN, Aaron, W.
IPC分类号： E21B47/18 , H04B11/00 , H04L27/04
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振幅和相位的唯一组合的压力脉冲。

3. 发明申请

WO2015027340A1 OPTIMIZING ELECTROMAGNETIC TELEMETRY TRANSMISSIONS 审中-公开
标题翻译：优化电磁遥测传输
公开(公告)号：WO2015027340A1
公开(公告)日：2015-03-05
申请号：PCT/CA2014/050825
申请日：2014-08-28
申请人： EVOLUTION ENGINEERING INC.
发明人： LIU, Jili , XU, Mingdong , LOGAN, Aaron W. , SWITZER, David A. , VARGA, Monica E.
IPC分类号： E21B47/13 , E21B44/00 , G08C17/02 , H04W52/00 , H04W80/00
CPC分类号： E21B47/122 , E21B47/121 , H04B17/318 , H04B17/336 , H04Q9/00 , H04W52/0245 , H04W52/028 , H04W52/241 , H04W52/245 , Y02D70/00
摘要： An electromagnetic telemetry system adjusts telemetry parameters which may include carrier frequency, signal amplitude and/or data encoding protocol to achieve reliable data transmission and to conserve power. In some embodiments, sweep signals transmit a range of carrier frequencies and the parameters are determined in part by analyzing the received sweep signals. In some embodiments, different parameters are selected automatically based on a mode of drilling.
摘要翻译：电磁遥测系统调整遥测参数，其可以包括载波频率，信号幅度和/或数据编码协议，以实现可靠的数据传输并节省功率。在一些实施例中，扫描信号传送载波频率的范围，并且部分地通过分析所接收的扫描信号来确定参数。在一些实施例中，基于钻孔的模式自动选择不同的参数。

4. 发明申请

WO2014127482A1 ELECTROMAGNETIC PULSE DOWNHOLE TELEMETRY 审中-公开
标题翻译：电磁脉冲潜水电报
公开(公告)号：WO2014127482A1
公开(公告)日：2014-08-28
申请号：PCT/CA2014/050122
申请日：2014-02-21
申请人： EVOLUTION ENGINEERING INC.
发明人： LIU, Jili , LOGAN, Aaron W. , XU, Mingdong , SWITZER, David A.
IPC分类号： E21B47/13 , H04B13/02 , H04L27/00
CPC分类号： E21B47/122 , E21B49/00 , H04B13/02 , H04L27/02 , H04L27/04
摘要： An apparatus for transmitting electromagnetic (EM) telemetry data from a downhole location to surface comprising: an EM signal transmitter configured to generate positive and negative polarity EM pulses corresponding to a telemetry signal; and an electronics subassembly communicative with the EM signal transmitter and comprising a processor and a memory having encoded thereon program code executable by the processor to perform a method comprising encoding measurement data into an EM telemetry signal using a modulation scheme comprising mapping a symbol set to at least one positive polarity EM pulse and one negative polarity EM pulse; and sending a control signal to the EM signal transmitter to generate EM pulses corresponding to the EM telemetry signal. The EM signal transmitter can comprise an H-bridge circuit electrically coupled to positive and negative ends of a gap sub such that applying a voltage across a positive pathway of the H-bridge circuit generates the positive polarity EM pulse, and applying a voltage across a negative pathway of the H-bridge circuit generates the negative polarity EM pulse.
摘要翻译：一种用于从井下位置向表面传输电磁（EM）遥测数据的装置，包括：EM信号发射器，被配置为产生对应于遥测信号的正极性和负极性EM脉冲; 以及与所述EM信号发射器通信的电子子组件，并且包括处理器和其上编码的存储器，所述处理器和所述存储器具有可由所述处理器执行的程序代码，以执行包括使用调制方案将测量数据编码为EM遥测信号的方法，所述调制方案包括将符号集映射到至少一个正极性EM脉冲和一个负极性EM脉冲; 并向EM信号发射机发送控制信号以产生对应于EM遥测信号的EM脉冲。 EM信号发射机可以包括电气耦合到间隙子的正端和负端的H桥电路，使得跨越H桥电路的正路径施加电压产生正极性EM脉冲，并且在 H桥电路的负路径产生负极性EM脉冲。

5. 发明申请

WO2014153657A1 ELECTROMAGNETIC COMMUNICATIONS SYSTEM AND METHOD FOR A DRILLING OPERATION 审中-公开
标题翻译：用于钻孔操作的电磁通信系统和方法
公开(公告)号：WO2014153657A1
公开(公告)日：2014-10-02
申请号：PCT/CA2014/050305
申请日：2014-03-24
申请人： EVOLUTION ENGINEERING INC.
发明人： SWITZER, David , LIU, Jili , XU, Mingdong , KAZEMI, Mojtaba
IPC分类号： E21B47/13 , H04W4/00
CPC分类号： E21B47/122
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.
摘要翻译：用于井下钻井操作的无线通信系统包括地面通信设备和井下遥测工具。表面通信设备包括具有EM下行链路发射机的表面EM通信模块，其被配置为以0.01Hz和0.1Hz之间的频率发送EM下行链路传输。井下遥测工具可安装到钻柱，并且具有井下电磁（EM）通信单元，其具有被配置为接收EM下行链路传输的EM下行链路接收器。井下EM通信单元还可以包括被配置为以大于0.5Hz的频率发送EM上行链路传输的EM上行链路发射机，在这种情况下，表面EM通信模块还包括被配置为接收EM上行链路传输的EM上行链路接收机。更具体地，井下EM上行链路发射机可以被配置为以比EM下行链路传输频率高至少十倍的频率来发射EM上行链路传输。

6. 发明申请

WO2014127489A1 INTEGRATED DOWNHOLE SYSTEM WITH PLURAL TELEMETRY SUBSYSTEMS 审中-公开
标题翻译：一体化远程系统与多个远程子系统
公开(公告)号：WO2014127489A1
公开(公告)日：2014-08-28
申请号：PCT/CA2014/050133
申请日：2014-02-25
申请人： EVOLUTION ENGINEERING INC.
发明人： LOGAN, Aaron W. , SWITZER, David A. , LIU, Jili , LOGAN, Justin C. , XU, Mingdong
IPC分类号： E21B47/12 , E21B44/00 , E21B47/00 , E21B47/10 , E21B7/00 , H04B3/00
CPC分类号： E21B47/122 , E21B7/04 , E21B47/00 , E21B47/12 , E21B47/14 , E21B47/18 , H04B3/54 , H04B2203/5458 , H04B2203/5475
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.
摘要翻译：井下系统具有多个遥测系统和配置成从一个或多个传感器获取信息并在多个遥测系统中的一个或多个上传送该信息的控制系统。可以改变控制器的配置，以便改变在给定的遥测系统上发送哪些信息以及如何在给定的遥测系统上传输信息。

7. 发明申请

WO2014176703A1 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：用于发送电磁遥测信号的数据帧或从一个卧室位置发送的方法和系统
公开(公告)号：WO2014176703A1
公开(公告)日：2014-11-06
申请号：PCT/CA2014/050423
申请日：2014-05-02
申请人： EVOLUTION ENGINEERING INC.
发明人： SWITZER, David , LIU, Jili , XU, Mingdong
IPC分类号： E21B47/13 , G08C19/14 , H04J1/00
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 multi- channel 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：可以使用多信道传输来执行用于向井下位置发送电磁（EM）遥测信号的数据帧的方法，技术和系统，其中使用两个不同频率的至少两个不同信道来发送长标题和数据框。以第一频率发送长报头的至少一部分，并且以不同于彼此的一个或多个附加频率发送数据帧和长报头的任何剩余部分不以第一频率发送的至少一部分和第一个频率。在一个示例中，仅使用两个信道：一个信道用于发送所有长报头，另一个信道用于发送所有数据帧，并且任一个信道用于发送标识标识类型的标识符数据框。

8. 发明申请

WO2014085936A1 METHOD AND APPARATUS FOR MULTI-CHANNEL DOWNHOLE ELECTROMAGNETIC TELEMETRY 审中-公开
标题翻译：多通道卧式电磁遥测方法与装置
公开(公告)号：WO2014085936A1
公开(公告)日：2014-06-12
申请号：PCT/CA2013/050943
申请日：2013-12-06
申请人： EVOLUTION ENGINEERING INC.
发明人： XU, Mingdong , LIU, Jili , SWITZER, David A. , LOGAN, Aaron W.
IPC分类号： E21B47/13 , E21B47/02 , H04B1/40 , H04L27/00
CPC分类号： E21B47/122 , H04B13/02 , H04L27/02 , H04L27/10 , H04L27/18 , H04L27/2601 , H04L27/28
摘要： An electromagnetic (EM) telemetry method comprises encoding downhole data into a single data stream; separating the single data stream into a plurality of separate data streams; converting each separate data stream into a corresponding separate waveform using a selected digital modulation technique wherein at least one of the frequency and phase of each waveform is assigned a unique value or unique non- overlapping range of values; combining each separate waveform into a combined waveform; and transmitting from a downhole location, an electromagnetic (EM) telemetry carrier wave comprising the combined waveform.
摘要翻译：电磁（EM）遥测方法包括将井下数据编码成单个数据流; 将单个数据流分离成多个单独的数据流; 使用所选择的数字调制技术将每个分离的数据流转换成相应的单独的波形，其中每个波形的频率和相位中的至少一个被分配唯一的值或唯一的非重叠的值的范围; 将每个单独的波形组合成组合波形; 以及从井下位置发送包括组合波形的电磁（EM）遥测载波。

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