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。

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：US20050277940A1

公开(公告)日：2005-12-15

申请号：US10868087

申请日：2004-06-15

Applicant: James Neff

Inventor： James Neff

IPC: A61B17/72 ,  A61B17/86 ,  A61B17/88

CPC classification number: A61B17/7225 ,  A61B17/8625 ,  A61B17/864 ,  A61B17/8695 ,  A61B17/8875 ,  A61B17/888

Abstract: A bone screw has a spring section to allow the screw to elongate while it is being installed. The screw has a cavity with a proximal drive surface and a distal drive surface. The drive surfaces are located on opposite sides of the spring section. A drive tool that has proximal and distal drive members fits within the cavity. Rotating the drive tool transmits torque to both the proximal and distal drive sockets simultaneously.

Abstract translation: 骨螺钉具有弹簧部分，以允许螺钉在安装时伸长。 螺杆具有带有近侧驱动表面和远侧驱动表面的空腔。 驱动表面位于弹簧部分的相对侧。 具有近端和远端驱动构件的驱动工具装配在腔内。 旋转驱动工具同时向近端和远端驱动插座传递扭矩。