公开(公告)号：WO2014145969A4

公开(公告)日：2015-02-19

申请号：PCT/US2014030831

申请日：2014-03-17

Applicant: XACT DOWNHOLE TELEMETRY INC ,  VAN ZELM JOHN-PETER ,  MARTINEAU CELINE J

Inventor： VAN ZELM JOHN-PETER ,  MARTINEAU CELINE J

IPC: G01V3/18

CPC classification number: H04L1/1657 ,  E21B47/12 ,  H04L43/08 ,  H04L43/0817 ,  H04L43/0835 ,  H04L43/0852

Abstract: A robust network telemetry repeater system exploits the repeater structure of data propagation and transmission and reception bidirectionality to increase network robustness. For example, multiple perceived receive attempts are created with no additional overhead. The system can be configured whereby nodes "hear" the transmissions of both adjacent and non- adjacent nodes forming implicit acknowledgement ("Acks"), and originating nodes can retransmit until implicit acknowledgments ("Acks") are "heard," indicating a successful link relay. Implicit acknowledgment can be applied to bidirectional networks, and bidirectional action can enable all nodes in the network to know the status of all other nodes.

Abstract translation: 强大的网络遥测中继系统利用数据传播的中继器结构和发送和接收双向性来增加网络的鲁棒性。 例如，创建多个感知的接收尝试，而不需要额外的开销。 可以配置系统，其中节点“听到”形成隐式确认（“Acks”）的相邻和非相邻节点的传输，并且始发节点可以重传直到隐含的确认（“Ack”）被“听到”，表示成功 链路继电器 隐式确认可以应用于双向网络，双向操作可以使网络中的所有节点能够知道所有其他节点的状态。

公开(公告)号：WO2014145848A2

公开(公告)日：2014-09-18

申请号：PCT/US2014/030682

申请日：2014-03-17

Applicant: XACT DOWNHOLE TELEMETRY, INC. ,  VAN ZELM, John-Peter

Inventor： VAN ZELM, John-Peter

IPC: G02B6/02 ,  G02B6/036 ,  H01S3/067

CPC classification number: E21B47/12 ,  E21B47/14

Abstract: A telemetry system produces, transmits and receives signal sets from network nodes, which correspond to transceiver stations. Repeater scheduling and other interference mitigating techniques are utilized to simultaneously transmit from multiple nodes with minimized network degradation. Update interval/rate and network throughput are thereby fixed regardless of the number of network nodes and a network telemetry method is provided using the system.

Abstract translation: 遥测系统产生，发送和接收来自对应于收发器站的网络节点的信号组。 利用中继器调度和其他干扰缓解技术来同时从多个节点进行发送，同时使网络退化最小化。 更新间隔/速率和网络吞吐量由此被固定，而不管网络节点的数量如何，并且使用该系统提供网络遥测方法。

公开(公告)号：WO2014138963A1

公开(公告)日：2014-09-18

申请号：PCT/CA2014/050205

申请日：2014-03-10

Applicant: XACT DOWNHOLE TELEMETRY INC.

Inventor： CAMWELL, Paul ,  DRUMHELLER, Douglas S.

IPC: E21B47/16

CPC classification number: E21B47/16

Abstract: An acoustic receiver for use on a drill string includes a housing attachable to the drill string; a first sensor mounted within the housing for measuring a first parameter at a first location on the drill string and for generating a first parameter signal representative of the first parameter: a second sensor mounted within the housing for measuring a second parameter at a second location on the drill string and for generating a second parameter signal representative of the second parameter; and a controller mounted within the housing and communicatively coupled to the first and second sensors. The magnitudes of the first and second parameters vary in proportion to magnitude of the acoustic wave and the first and second parameters have a quadrature phase relationship. The controller is configured to combine the first and second parameter signals to determine the magnitude of the acoustic wave.

Abstract translation: 用于钻柱的声学接收器包括可附接到钻柱的壳体; 安装在所述壳体内的第一传感器，用于测量所述钻柱上的第一位置处的第一参数，并且用于产生表示所述第一参数的第一参数信号：安装在所述壳体内的第二传感器，用于在第二位置处测量第二参数 钻柱，用于产生代表第二参数的第二参数信号; 以及控制器，其安装在所述壳体内并且通信地耦合到所述第一和第二传感器。 第一和第二参数的大小与声波的幅度成比例地变化，并且第一和第二参数具有正交相位关系。 控制器被配置为组合第一和第二参数信号以确定声波的幅度。

公开(公告)号：WO2018068147A1

公开(公告)日：2018-04-19

申请号：PCT/CA2017/051219

申请日：2017-10-13

Applicant: XACT DOWNHOLE TELEMETRY INC.

Inventor： XIAO, Xiaojun ,  VAN ZELM, John-peter ,  MCRORY, John Godfrey

IPC: E21B47/16 ,  E21B47/01 ,  H01L41/053

Abstract: A downhole acoustic transmitter has a piezoelectric transducer, an enclosure in which the piezoelectric transducer is housed, a transducer preload means which applies a selected compressive force against the transducer such that a mechanical preload is applied to the 5 transducer, and an acoustic tuning element which has a first end coupled to the transducer preload means or the transducer, and an open second end. The acoustic tuning element is not coupled to anything but the transducer preload means or transducer, so the transducer preload means effectively has a second open end and thus can maintain the same preload compressive force on the transducer even when the transmitter is subjected to tension and 10 compressive forces during operation.

Abstract translation: 井下声发射器具有压电换能器，封装有压电换能器的外壳，换能器预加载装置，该换能器预加载装置对换能器施加选定的压缩力，使得机械预加载施加到5 换能器，以及声学调谐元件，其具有耦合到换能器预加载装置或换能器的第一端和开放的第二端。 声学调谐元件除了换能器预加载装置或换能器之外没有任何耦合，因此换能器预加载装置有效地具有第二开放端并且因此即使在发射器受到张力时也可以在换能器上保持相同的预加载荷压缩力， 操作过程中的压缩力。

公开(公告)号：WO2018010015A1

公开(公告)日：2018-01-18

申请号：PCT/CA2017/050823

申请日：2017-07-07

Applicant: XACT DOWNHOLE TELEMETRY INC.

Inventor： XIAO, Xiaojun ,  WHALEN, Dave ,  VAN ZELM, J P ,  MCRORY, John Godfrey

IPC: E21B47/14

Abstract: A downhole acoustic transmitter has a pre-loaded piezoelectric transducer, an enclosure in which the piezoelectric transducer is housed, a preload spring that biases the transducer against a first end coupling of the enclosure, and an adjustable preload means mounted to the enclosure such that a selected compressive force is applied to the preload spring, which in turn urges the transducer against a face of the first end coupling such that a mechanical preload is applied to the transducer. The position of the adjustable preload means and the spring compliance are selected so that the level of mechanical preload applied to the transducer compensates for an expected amount of flexing of the acoustic telemetry transmitter due to varying tension and compression applied to the transmitter, thereby maintaining an effective preload on the transducer.

Abstract translation: 井下声发射器具有预加载的压电换能器，其中容纳压电换能器的外壳，将换能器抵靠外壳的第一端联接器偏置的预加载弹簧，以及可调节的预加载 被安装到外壳的装置，使得选择的压缩力被施加到预加载弹簧，其继而促使换能器抵靠第一端联接器的面，使得机械预加载被施加到换能器。 可调节的预加载装置的位置和弹簧柔度被选择成使得施加到换能器的机械预载荷的水平补偿由于施加到发送器的变化的张力和压缩而导致的声学遥测发送器的预期挠曲量， 有效的预加载在换能器上。

公开(公告)号：WO2014145848A4

公开(公告)日：2014-12-31

申请号：PCT/US2014030682

申请日：2014-03-17

Applicant: XACT DOWNHOLE TELEMETRY INC ,  VAN ZELM JOHN-PETER

Inventor： VAN ZELM JOHN-PETER

IPC: E21B47/12

CPC classification number: E21B47/12 ,  E21B47/14

Abstract: A telemetry system produces, transmits and receives signal sets from network nodes, which correspond to transceiver stations. Repeater scheduling and other interference mitigating techniques are utilized to simultaneously transmit from multiple nodes with minimized network degradation. Update interval/rate and network throughput are thereby fixed regardless of the number of network nodes and a network telemetry method is provided using the system.

Abstract translation: 遥测系统从与收发台对应的网络节点产生，发送和接收信号集。 中继器调度和其他干扰减轻技术被用于以最小化的网络劣化同时从多个节点发送。 无论网络节点的数量如何，因此可以更新间隔/速率和网络吞吐量，并且使用该系统提供网络遥测方法。

公开(公告)号：WO2014131132A1

公开(公告)日：2014-09-04

申请号：PCT/CA2014/050154

申请日：2014-02-28

Applicant: XACT DOWNHOLE TELEMETRY INC.

Inventor： CAMWELL, Paul ,  REEVES, Michael

IPC: E21B47/09

CPC classification number: E21B47/09 ,  E21B33/12 ,  E21B47/044 ,  G01V5/045

Abstract: A method for detecting a downhole position in a wellbore comprises: providing a set of signal emitters, each signal emitter in the set attached to a different position in the wellbore and each signal emitter configured to emit a signal having a unique characteristic; and providing a measurement tool comprising a signal detector configured to detect the different signals and a rotation device configured to rotatably contact a wall of the wellbore. The measurement tool is moved through the wellbore and one or more positions of the measurement tool in the wellbore is determined by detecting one or more of the signals and identifying the position of one or more of the signal emitters by the unique characteristic of each detected signal, and by detecting the number of rotations in a ranging wheel of the rotation detector that contacts the wellbore.

Abstract translation: 一种用于检测井眼中的井下位置的方法，包括：提供一组信号发射器，该组中的每个信号发射器附接到井眼中的不同位置，并且每个信号发射器被配置为发射具有独特特征的信号; 以及提供测量工具，其包括被配置为检测不同信号的信号检测器和被配置为可旋转地接触井眼的壁的旋转装置。 通过检测一个或多个信号并且通过每个检测信号的唯一特性来识别一个或多个信号发射器的位置来确定测量工具通过井筒移动并且测量工具在井眼中的一个或多个位置 并且通过检测与井眼接触的旋转检测器的测距轮中的旋转次数。

公开(公告)号：US20190052410A1

公开(公告)日：2019-02-14

申请号：US16161955

申请日：2018-10-16

Applicant: XACT Downhole Telemetry, Inc.

Inventor： John-Peter van Zelm ,  Celine J. Martineau

IPC: H04L1/16 ,  H04L12/26 ,  E21B47/12

CPC classification number: H04L1/1657 ,  E21B47/12 ,  H04L43/08 ,  H04L43/0817 ,  H04L43/0835 ,  H04L43/0852 ,  Y04S40/168

Abstract: A robust network telemetry repeater system exploits the repeater structure of data propagation and transmission and reception bi-directionality to increase network robustness. For example, multiple perceived receive attempts are created with no additional overhead. The system can be configured whereby nodes “hear” the transmissions of both adjacent and non-adjacent nodes forming implicit acknowledgement (“Acks”), and originating nodes can retransmit until implicit acknowledgments (“Acks”) are “heard,” indicating a successful link relay. Implicit acknowledgment can be applied to bidirectional networks, and bidirectional action can enable all nodes in the network to know the status of all other nodes.

公开(公告)号：US20190017371A1

公开(公告)日：2019-01-17

申请号：US16080600

申请日：2017-03-03

Applicant: XACT Downhole Telemetry Inc.

Inventor： John Godfrey McRory

IPC: E21B47/16 ,  E21B47/06

CPC classification number: E21B47/16 ,  B06B1/0611 ,  E21B47/065 ,  G01V1/22

Abstract: Methods, systems, and techniques for controlling voltage applied across a piezoelectric stack of a downhole acoustic transmitter. At least one of the temperature of the stack and the compressive stress applied to the stack is monitored. At least one of the temperature of the stack and the compressive stress applied to the stack is compared to a temperature threshold and a stress threshold, respectively. When the stack signal is an alternating voltage signal and when at least one of the temperature of the stack and the compressive stress applied to the stack respectively exceeds the temperature threshold and the stress threshold, the stack signal is modified such that a negative polarity portion of the stack signal has a maximum magnitude less than a magnitude of a negative polarity limit.

公开(公告)号：US20160024913A1

公开(公告)日：2016-01-28

申请号：US14775477

申请日：2014-03-10

Applicant: XACT DOWNHOLE TELEMETRY INC.

Inventor： Paul Camwell ,  Douglas S. Drumheller

IPC: E21B47/16

CPC classification number: E21B47/16 ,  E21B47/18 ,  E21B47/182 ,  G01V1/523 ,  G01V11/002 ,  G10K11/16

Abstract: An acoustic receiver for use on a drill string includes a housing attachable to the drill string; a first sensor mounted within the housing for measuring a first parameter at a first location on the drill string and for generating a first parameter signal representative of the first parameter; a second sensor mounted within the housing for measuring a second parameter at a second location on the drill string and for generating a second parameter signal representative of the second parameter; and a controller mounted within the housing and communicatively coupled to the first and second sensors. The magnitudes of the first and second parameters vary in proportion to magnitude of the acoustic wave and the first and second parameters have a quadrature phase relationship. The controller is configured to combine the first and second parameter signals to determine the magnitude of the acoustic wave.

Abstract translation: 用于钻柱的声学接收器包括可附接到钻柱的壳体; 安装在所述壳体内的第一传感器，用于测量所述钻柱上的第一位置处的第一参数并且用于生成表示所述第一参数的第一参数信号; 安装在所述壳体内的第二传感器，用于测量所述钻柱上的第二位置处的第二参数，并用于产生表示所述第二参数的第二参数信号; 以及控制器，其安装在所述壳体内并且通信地耦合到所述第一和第二传感器。 第一和第二参数的大小与声波的幅度成比例地变化，并且第一和第二参数具有正交相位关系。 控制器被配置为组合第一和第二参数信号以确定声波的幅度。