公开(公告)号：US20100135117A1

公开(公告)日：2010-06-03

申请号：US12618906

申请日：2009-11-16

Applicant: John G McRory

Inventor： John G McRory

IPC: E21B47/16

CPC classification number: E21B47/16

Abstract: The present invention relates to telemetry apparatus and methods, and more particularly to acoustic telemetry apparatus and methods used in the oil and gas industry. More specifically, the invention relates to a method for enhancing a received signal transmitted by acoustic telemetry through a drill string by modifying the received signal by a multiplication of the received signal with a second waveform.

Abstract translation: 本发明涉及遥测装置和方法，更具体地说涉及在油气工业中使用的声学遥测装置和方法。 更具体地说，本发明涉及一种通过使用接收信号与第二波形的相乘修正接收信号，通过钻柱增强由声学遥测发送的接收信号的方法。

公开(公告)号：US10103846B2

公开(公告)日：2018-10-16

申请号：US14217160

申请日：2014-03-17

Applicant: XACT Downhole Telemetry, Inc.

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

IPC: G01V3/30 ,  H04L1/16 ,  E21B47/12 ,  H04L12/26

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：US20150377017A1

公开(公告)日：2015-12-31

申请号：US14766421

申请日：2014-02-07

Applicant: XACT DOWNHOLE TELEMETRY INC.

Inventor： John Godfrey McRory

IPC: E21B47/16

CPC classification number: E21B47/16 ,  B06B1/0215 ,  B06B2201/55 ,  B06B2201/73 ,  E21B47/14

Abstract: An acoustic transmitter for transmitting an acoustic signal through a downhole medium includes a voltage source; a composite load; and switching circuitry that applies voltage from the voltage source across the composite load in response to a drive signal. The composite load includes charge control circuitry, in the form of at least one inductor, connected electrically in series with a piezoelectric transducer that may be electrically modeled as a capacitor.

Abstract translation: 用于通过井下介质发送声信号的声发射器包括电压源; 复合载荷 以及响应于驱动信号，从电压源跨复合负载施加电压的开关电路。 复合负载包括以至少一个电感器的形式的电荷控制电路，该电感器与可被电气建模为电容器的压电换能器电串联连接。

公开(公告)号：US08982667B2

公开(公告)日：2015-03-17

申请号：US12705346

申请日：2010-02-12

Applicant: Paul L. Camwell ,  David D. Whalen ,  Douglas S. Drumheller

Inventor： Paul L. Camwell ,  David D. Whalen ,  Douglas S. Drumheller

IPC: E21B47/14 ,  G01V1/40 ,  E21B47/16 ,  G01V3/00 ,  G01V11/00

CPC classification number: E21B47/16 ,  E21B47/12 ,  E21B47/14 ,  G01V11/002 ,  G10K11/16 ,  G10K11/162 ,  G10K11/168

Abstract: A stacked-ring, slow-wave acoustic telemetry isolation system and method for use with tubular assemblies such as drillpipe or production tubing comprising an acoustic wave transmitter, the acoustic isolator behaving 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. 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. It causes substantially all of the emitted wave energy to travel in a chosen direction along the drill pipe, thus aiding the efficiency of acoustic telemetry said pipe.

Abstract translation: 叠层环，慢波声学遥测隔离系统和方法，用于管状组件，例如钻杆或包括声波发射器的生产管道，声隔离器的行为使得朝向隔离器传播的“向下”波被大体上反射回 同时具有从声波源远离隔离器传播的“向上”波。 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。 它引起基本上所有发射的波能量沿着钻杆沿所选择的方向行进，从而有助于声学遥测所述管道的效率。

公开(公告)号：US08922387B2

公开(公告)日：2014-12-30

申请号：US13087020

申请日：2011-04-14

Applicant: Paul L. Camwell ,  David D. Whalen

Inventor： Paul L. Camwell ,  David D. Whalen

IPC: G01V3/00 ,  E21B17/00

CPC classification number: E21B17/003

Abstract: A generally three-part EM gap sub comprising a first conductive cylinder incorporating a male tapered threaded section, a second conductive cylinder incorporating female tapered threaded section, both axially aligned and threaded into each other is described. One or both tapers incorporate slots whereby non-conductive inserts may be placed before assembly of the cylinders. The inserts are designed to cause the thread roots, crests and sides of the tapered sections of both cylinders to be spatially separated. The cylinders can be significantly torqued, one into the other, while maintaining an annular separation and therefore electrical separation as part of the assembly procedure. The co-joined coaxial cylinders can be placed into an injection moulding machine wherein a high performance thermoplastic is injected into the annular space, thereby forming both an insulative gap (the third part) and a strong joint between the cylinders in the newly created EM gap sub.

Abstract translation: 描述了一个通常为三部分的EM间隙子，包括一个包含一个凸形锥形螺纹部分的第一导电圆柱体，一个包含内锥形螺纹部分的第二导电圆柱体，两个轴向对齐并相互螺纹连接。 一个或两个锥体包括槽，由此在组装气缸之前可以放置非导电插入件。 插入件被设计成使得两个圆柱体的锥形部分的螺纹根部，顶部和侧面在空间上分离。 气缸可以明显扭转，另一方面是保持环形分离，因此作为组装过程的一部分进行电气分离。 共同的同轴圆筒可以放置在注塑机中，其中将高性能热塑性塑料注入到环形空间中，从而在新创建的EM间隙中形成绝缘间隙（第三部分）和气缸之间的牢固接头 子

公开(公告)号：US20140266769A1

公开(公告)日：2014-09-18

申请号：US14215617

申请日：2014-03-17

Applicant: Xact Downhole Telemetry, Inc.

Inventor： John-Peter van Zelm

IPC: 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: 遥测系统从对应于收发台的网络节点产生，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从多个节点同时发送。 无论网络节点的数量如何，都能够更新间隔/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：US08823543B2

公开(公告)日：2014-09-02

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：US20140112100A1

公开(公告)日：2014-04-24

申请号：US14144333

申请日：2013-12-30

Applicant: Xact Downhole Telemetry, Inc.

Inventor： Paul L. Camwell ,  James M. Neff

IPC: E21B47/16

CPC classification number: E21B47/16 ,  E21B4/14 ,  E21B44/00

Abstract: A system and method of optimizing air hammer performance in a well drilling rig whereby an electronic acoustic receiver (EAR) is used to monitor the effects of changing any of the operating parameters under his or her control. The signals are visually presented to the drill operator based on an EAR's output, along with current settings, allowing the drill operator to dial in the parameters of his or her choice until the optimal frequency of the air hammer is regained. The visual output displays the amplitude response of acoustic waves being detected and decoded at the surface by the EAR. The drill operator can observe and use this information to determine the changes necessary in the operating parameters to return the hammer to optimal frequency, and thus optimal performance.

Abstract translation: 一种优化钻井钻机中的气锤性能的系统和方法，其中使用电子声学接收器（EAR）来监测在他或她的控制下改变任何操作参数的影响。 信号根据EAR的输出以及当前设置以视觉方式呈现给钻机操作员，允许钻头操作者拨打他或她选择的参数，直到重新获得气锤的最佳频率。 视觉输出显示由EAR在表面检测和解码的声波的振幅响应。 钻头操作者可以观察和使用该信息来确定操作参数中所需的更改以将锤返回到最佳频率，从而确定最佳性能。

公开(公告)号：US20080013403A1

公开(公告)日：2008-01-17

申请号：US11786645

申请日：2007-04-11

Applicant: Paul Camwell ,  James Neff

Inventor： Paul Camwell ,  James Neff

IPC: E21B47/16

CPC classification number: E21B47/16

Abstract: A method for enhancing downhole telemetry performance comprising enhancing a signal in order to offset signal-to-noise ratio reduction with increasing measured depth, wherein the signal is modified at specified measured depths which are inferred from acoustic wave velocity determination.

Abstract translation: 一种用于增强井下遥测性能的方法，包括增强信号以便随着测量深度的增加来抵消信噪比的降低，其中在由声波速度确定推断出的指定测量深度处修改信号。

公开(公告)号：US20070257810A1

公开(公告)日：2007-11-08

申请号：US11786644

申请日：2007-04-11

Applicant: Paul Camwell ,  James Neff

Inventor： Paul Camwell ,  James Neff

IPC: G01V3/00

CPC classification number: E21B47/14 ,  E21B47/04 ,  E21B47/06

Abstract: A method whereby a downhole drilling transmission device that communicates to the surface automatically modifies its transmission parameters in order that it substantially improves its ability to adequately communicate with a surface receiver despite increasing signal attenuation between the two as the length of drillpipe increases. This utilizes a simple measure of localized downhole pressure that then relies upon a look-up table or similar that provides a correspondence between said pressure and measured depth. Such a look-up table or similar can be readily built by incorporating appropriate features of the planned well such as drilling fluid flow rate, drilling fluid density, drilling fluid viscosity, well profile, bottom hole assembly component geometry, drillpipe geometry, and indications as to whether the fluid is flowing or stationary. Upon determining the measured depth the tool then can attempt to modify or augment appropriate telemetry parameters in order to keep the signal received at surface within required parameters, thus offsetting the degradation due to increasing attenuation.

Abstract translation: 一种与表面通信的井下钻井传动装置自动修改其传动参数的方法，以便随着钻杆的长度增加，两者之间的信号衰减增加，其大大提高了与表面接收器充分通信的能力。 这利用了局部井下压力的简单测量，然后依赖于提供所述压力和测量深度之间的对应关系的查找表或类似物。 可以通过结合计划井的适当特征，例如钻井液流量，钻井液密度，钻井液粘度，井廓廓，井底组件几何形状，钻杆几何形状和指示来容易地构建这样的查找表或类似物 流体是流动还是静止。 在确定测量深度之后，工具然后可以尝试修改或增加适当的遥测参数，以便将接收的信号保持在所需参数的表面，从而抵消由于增加的衰减引起的劣化。