公开(公告)号：US08115651B2

公开(公告)日：2012-02-14

申请号：US12082530

申请日：2008-04-11

Applicant: Paul L. Camwell ,  James M. Neff ,  Derek W. Logan

Inventor： Paul L. Camwell ,  James M. Neff ,  Derek W. Logan

IPC: G01V3/18

CPC classification number: E21B47/12 ,  H04L67/12 ,  H04W40/10 ,  H04W40/12 ,  H04W40/22 ,  Y02D70/326 ,  Y02D70/34 ,  Y02D70/39

Abstract: A method is provided which transmits information using a plurality of data transmission nodes situated along a drill string. In this method, a first node obtains a transmission status of a second node. When the transmission status of the second node indicates that the second node meets a selected performance threshold, information is sent from the first node to the second node. When the transmission status of the second node indicates that the second node does not meet its performance threshold, then the first node obtains a transmission status of a third node. When the transmission status of the third node indicates that the third node meets a selected performance threshold, information is transmitted from the first node to the third node for relaying along the drill string.

Abstract translation: 提供了使用沿着钻柱定位的多个数据传输节点发送信息的方法。 在该方法中，第一节点获得第二节点的传输状态。 当第二节点的传输状态指示第二节点满足所选择的性能阈值时，从第一节点向第二节点发送信息。 当第二节点的传输状态指示第二节点不满足其性能阈值时，第一节点获得第三节点的传输状态。 当第三节点的传输状态指示第三节点满足所选择的性能阈值时，从第一节点向第三节点发送信息，以便沿着钻柱进行中继。

公开(公告)号：US20110163889A1

公开(公告)日：2011-07-07

申请号：US13046574

申请日：2011-03-11

Applicant: Paul L. Camwell ,  James M. Neff ,  Douglas S. Drumheller

Inventor： Paul L. Camwell ,  James M. Neff ,  Douglas S. Drumheller

IPC: G01V3/00

CPC classification number: E21B47/16

Abstract: Non-contacting means of measuring the material velocities of harmonic acoustic telemetry waves travelling along the wall of drillpipe, production tubing or coiled tubing are disclosed. Also disclosed are contacting means, enabling measurement of accelerations or material velocities associated with acoustic telemetry waves travelling along the wall of the tubing, utilizing as a detector either a wireless accelerometer system or an optical means, or both; these may also be applied to mud pulse telemetry, wherein the telemetry waves are carried via the drilling fluid, causing strain in the pipe wall that in turn causes wall deformation that can be directly or indirectly assessed by optical means.The present invention enables detection of telemetry wave detection in space-constrained situations. The invention also teaches a substantially contactless method of determining the time-based changes of the propagating telemetry waves. A final benefit of the present invention is that it demonstrates a particularly simple contacting means of directly measuring wall movements in live coiled tubing drilling environments.

Abstract translation: 公开了测量沿着钻杆，生产管道或连续油管的壁行进的谐波声学遥测波的材料速度的非接触方式。 还公开了接触装置，其能够测量与沿管道壁行进的声学遥测波相关联的加速度或材料速度，利用无线加速度计系统或光学装置或两者的检测器; 这些也可以应用于泥浆脉冲遥测，其中遥测波通过钻井液携带，导致管壁的应变，从而导致可以通过光学装置直接或间接地评估的壁变形。 本发明能够在空间有限的情况下检测遥测波检测。 本发明还教导了确定传播遥测波的基于时间的变化的基本上非接触的方法。 本发明的最终益处在于它展示了一种特别简单的直接测量活盘管道钻井环境中的壁面运动的接触方式。

公开(公告)号：US20100157741A1

公开(公告)日：2010-06-24

申请号：US12645353

申请日：2009-12-22

Applicant: Douglas S. Drumheller ,  Paul L. Camwell ,  Anthony R. Dopf ,  Derek W. Logan

Inventor： Douglas S. Drumheller ,  Paul L. Camwell ,  Anthony R. Dopf ,  Derek W. Logan

IPC: G01V1/00

CPC classification number: G01V1/523

Abstract: An acoustic isolator for use with tubular assemblies such as drillpipe or production tubing comprising an acoustic wave transmitter, the acoustic isolator comprising, in series connection, an odd integer λ/4 multiple tuning bar of first acoustic impedance adjacent the acoustic wave transmitter, an odd integer λ/4 multiple reflector tube of second acoustic impedance, and a snubber of third acoustic impedance, wherein there is an acoustic impedance mismatch between the odd integer λ/4 multiple tuning bar and the odd integer λ/4 multiple reflector tube and an acoustic impedance mismatch between the odd integer λ/4 multiple reflector tube and snubber, such that a ‘down’ wave propagated toward the isolator is reflected back substantially in phase with an ‘up’ wave propagated from the acoustic wave source away from the isolator. Furthermore, the acoustic isolator is similarly effective in reflecting ‘up’ propagating waves originating from below the isolator, hence further protecting the acoustic wave source from possible deleterious interference.

Abstract translation: 一种用于管状组件（例如钻杆或包括声波发射器的生产管道）的声隔离器，该声隔离器串联连接包括与声波发射器相邻的第一声阻抗的奇整数λ/ 4多调谐杆，奇数 第二声阻抗的整数λ/ 4多重反射管和第三声阻抗缓冲器，其中在奇整数λ/ 4多调谐条与奇整数λ/ 4多反射管之间存在声阻抗失配 奇数整数λ/ 4多重反射管和缓冲器之间的阻抗失配，使得朝向隔离器传播的“向下”波基本上与从声波源远离隔离器传播的“向上”波相反地反射回来。 此外，声隔离器在反射从隔离器下方产生的“向上”传播波同样有效，因此进一步保护声波源免受可能的有害干扰。

公开(公告)号：US20070258326A1

公开(公告)日：2007-11-08

申请号：US11786646

申请日：2007-04-11

Applicant: Paul Camwell ,  James Neff ,  Douglas Drumheller

Inventor： Paul Camwell ,  James Neff ,  Douglas Drumheller

IPC: G01V8/00 ,  G01V1/00

CPC classification number: E21B47/16

Abstract: Non-contacting means of measuring the material velocities of harmonic acoustic telemetry waves travelling along the wall of drillpipe, production tubing or coiled tubing are disclosed. Also disclosed are contacting means, enabling measurement of accelerations or material velocities associated with acoustic telemetry waves travelling along the wall of the tubing, utilizing as a detector either a wireless accelerometer system or an optical means, or both; these may also be applied to mud pulse telemetry, wherein the telemetry waves are carried via the drilling fluid, causing strain in the pipe wall that in turn causes wall deformation that can be directly or indirectly assessed by optical means. The present invention enables detection of telemetry wave detection in space-constrained situations. The invention also teaches a substantially contactless method of determining the time-based changes of the propagating telemetry waves. A final benefit of the present invention is that it demonstrates a particularly simple contacting means of directly measuring wall movements in live coiled tubing drilling environments.

Abstract translation: 公开了测量沿着钻杆，生产管道或连续油管的壁行进的谐波声学遥测波的材料速度的非接触方式。 还公开了接触装置，其能够测量与沿管道壁行进的声学遥测波相关联的加速度或材料速度，利用无线加速度计系统或光学装置或两者的检测器; 这些也可以应用于泥浆脉冲遥测，其中遥测波通过钻井液携带，导致管壁的应变，从而导致可以通过光学装置直接或间接地评估的壁变形。 本发明能够在空间有限的情况下检测遥测波检测。 本发明还教导了确定传播遥测波的基于时间的变化的基本上非接触的方法。 本发明的最终益处在于它展示了一种特别简单的直接测量活盘管道钻井环境中的壁面运动的接触方式。

公开(公告)号：US20070257809A1

公开(公告)日：2007-11-08

申请号：US11786521

申请日：2007-04-11

Applicant: Paul Camwell ,  Wendall Siemens ,  Derek Logan

Inventor： Paul Camwell ,  Wendall Siemens ,  Derek Logan

IPC: G01V1/40

CPC classification number: E21B47/14

Abstract: A system and method of closed loop control whereby acoustic telemetry devices, both at surface and downhole, form nodes of a feedback loop; said feedback loop enables an automatic and dynamic means to modify transmission parameters such that the system's telemetry data rate is maximized consistent with minimum achievable signal-to-noise ratio and minimum expended power.

Abstract translation: 闭环控制的系统和方法，其中声学遥测装置在地面和井下形成反馈回路的节点; 所述反馈回路使自动和动态装置能够修改传输参数，使得系统的遥测数据速率最大化，与最小可实现的信噪比和最小消耗功率一致。

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。

公开(公告)号：US20140269188A1

公开(公告)日：2014-09-18

申请号：US14217160

申请日：2014-03-17

Applicant: XACT Downhole Telemetry, Inc.

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

IPC: H04L1/16 ,  E21B47/14 ,  H04L12/26

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 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.

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传输和接收双向性来提高网络的鲁棒性。 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”形成隐含确认（“Ack”）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：US08270251B2

公开(公告)日：2012-09-18

申请号：US12645353

申请日：2009-12-22

Applicant: Douglas S. Drumheller ,  Paul L. Camwell ,  Anthony R. Dopf ,  Derek W. Logan

Inventor： Douglas S. Drumheller ,  Paul L. Camwell ,  Anthony R. Dopf ,  Derek W. Logan

IPC: E21B47/12

CPC classification number: G01V1/523

Abstract: An acoustic isolator for use with tubular assemblies such as drillpipe or production tubing comprising an acoustic wave transmitter, the acoustic isolator comprising, in series connection, an odd integer λ/4 multiple tuning bar of first acoustic impedance adjacent the acoustic wave transmitter, an odd integer λ/4 multiple reflector tube of second acoustic impedance, and a snubber of third acoustic impedance, wherein there is an acoustic impedance mismatch between the odd integer λ/4 multiple tuning bar and the odd integer λ/4 multiple reflector tube and an acoustic impedance mismatch between the odd integer λ/4 multiple reflector tube and snubber, such that a ‘down’ wave propagated toward the isolator is reflected back substantially in phase with an ‘up’ wave propagated from the acoustic wave source away from the isolator. Furthermore, the acoustic isolator is similarly effective in reflecting ‘up’ propagating waves originating from below the isolator, hence further protecting the acoustic wave source from possible deleterious interference.

Abstract translation: 一种用于管状组件（例如钻杆或包括声波发射器的生产管道）的声隔离器，该声隔离器串联连接包括与声波发射器相邻的第一声阻抗的奇整数λ/ 4多调谐杆，奇数 第二声阻抗的整数λ/ 4多重反射管和第三声阻抗缓冲器，其中在奇整数λ/ 4多调谐条与奇整数λ/ 4多反射管之间存在声阻抗失配 奇数整数λ/ 4多重反射管和缓冲器之间的阻抗失配，使得朝向隔离器传播的“向下”波基本上与从声波源远离隔离器传播的“向上”波相反地反射回来。 此外，声隔离器在反射从隔离器下方产生的“向上”传播波同样有效，因此进一步保护声波源免受可能的有害干扰。

公开(公告)号：US20110069583A1

公开(公告)日：2011-03-24

申请号：US12887334

申请日：2010-09-21

Applicant: Paul L. Camwell ,  James M. Neff

Inventor： Paul L. Camwell ,  James M. Neff

IPC: E21B47/09

CPC classification number: E21B47/091

Abstract: An invention is claimed wherein the signal loss along steel drill pipe walls can be estimated in the absence of a loss mechanism due to the formation debris at various positions in the well bore; the signal loss in excess of the calculated attenuation is generally and directly attributable to the build-up of said formation debris and an estimation of the amount can be determined. Furthermore, by use of distributed acoustic nodes positioned in the well between the transmitter in the BHA and the surface receiver—configured as repeaters—the formation debris build-up can be determined in each section so defined. This new information enables the driller to implement hole cleaning means in a timely manner and as appropriate, thus avoiding the problems of getting stuck in the hole, and possible well abandonment. An extension of the method enables the hole cleaning process to be automated, thereby improving efficiency.

Abstract translation: 发明要求的一个方面，其中沿着钢钻井管壁的信号损失可以在不存在损失机理的情况下估计，这是由于在井眼中的各个位置处的地层碎屑; 超过计算的衰减的信号损失通常并直接归因于所述地层碎屑的积聚，并且可以确定量的估计。 此外，通过使用位于BHA中的发射器之间的井中的分布式声学节点和被配置为中继器的表面接收器 - 可以在如此限定的每个部分中确定地层碎屑积聚。 这种新信息使得钻机能够及时，适当地实施孔清洁装置，从而避免卡在孔中的问题以及可能的遗弃。 该方法的延伸使得孔清洁过程能够自动化，从而提高效率。