公开(公告)号：US20160017704A1

公开(公告)日：2016-01-21

申请号：US14771777

申请日：2014-02-28

Applicant: XACT Downhole Telemetry Inc.

Inventor： Paul Camwell ,  Michael Reeves

IPC: E21B47/09 ,  G01V5/04 ,  E21B33/12

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眼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数。

公开(公告)号：US20140153369A1

公开(公告)日：2014-06-05

申请号：US14094417

申请日：2013-12-02

Applicant: Xact Downhole Telemetry, Inc.

Inventor： John-Peter van Zelm

IPC: E21B47/16

CPC classification number: E21B47/122 ,  E21B17/003 ,  E21B17/028 ,  E21B17/20 ,  E21B43/04 ,  E21B43/26 ,  E21B47/12 ,  E21B47/16 ,  G01V1/26

Abstract: A downhole repeater network timing system for a drilling rig including a drillstring extending subsurface downwardly from a surface wellhead. The system includes a node located at the drillstring lower end and including a sensor adapted for providing a signal data set output corresponding to downhole drilling conditions. Multiple nodes are located downhole between the Bottom Hole Assembly (BHA) and the wellhead and are associated with the drillstring. The nodes are adapted for receiving and transmitting the signals. The timing control system is adapted for controlling all times within a timeframe according to pre-configured constants known to all nodes. A downhole low rate linear repeater network timing method uses the system.

Abstract translation: 一种用于钻机的井下中继器网络定时系统，其包括从表面井口向下延伸的钻柱。 该系统包括位于钻柱下端的节点，并且包括适于提供对应于井下钻井条件的信号数据组输出的传感器。 多个节点位于底孔组件（BHA）和井口之间的井下，并与钻柱相关联。 节点适于接收和发送信号。 时序控制系统适用于根据所有节点已知的预先配置的常数在一段时间内控制所有时间。 井下低速线性中继器网络定时方法使用该系统。

公开(公告)号：US07928861B2

公开(公告)日：2011-04-19

申请号：US11786646

申请日：2007-04-11

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：US07817061B2

公开(公告)日：2010-10-19

申请号：US11786645

申请日：2007-04-11

Applicant: Paul L. Camwell ,  James M. Neff

Inventor： Paul L. Camwell ,  James M. Neff

IPC: G01V3/00

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：US06956791B2

公开(公告)日：2005-10-18

申请号：US10354157

申请日：2003-01-28

Applicant: Anthony R. Dopf ,  Paul L. Camwell ,  Wendall L. Siemens ,  Derek W. Logan

Inventor： Anthony R. Dopf ,  Paul L. Camwell ,  Wendall L. Siemens ,  Derek W. Logan

IPC: E21B47/16 ,  G01V11/00 ,  H04V9/00

CPC classification number: E21B47/16 ,  G01V11/002

Abstract: The invention relates to an apparatus for receiving downhole acoustic signals, processing the signals into electric signals, then transmitting the signals wirelessly to a remote above-surface monitoring station. The apparatus is mountable to an above-surface rotatable component used in borehole application. The apparatus includes an instrument housing, and a clamping assembly attached to the housing and having sufficient length and flexibility to enable the apparatus to surround the perimeter of the rotatable component.

Abstract translation: 本发明涉及一种用于接收井下声信号，将信号处理成电信号，然后将信号无线地传输到远程上表面监测站的装置。 该装置可安装到用于钻孔应用中的上表面可旋转部件。 该装置包括一个仪器壳体和一个附接到壳体上的夹持组件，并且具有足够的长度和柔性，使装置能够围绕可旋转部件的周边。