公开(公告)号：US20050087368A1

公开(公告)日：2005-04-28

申请号：US10605730

申请日：2003-10-22

申请人： BRUCE BOYLE ,  NICOLAS PACAULT ,  JEAN-MICHEL HACHE ,  REMI HUTIN ,  RAGHU MADHAVAN ,  JACQUES JUNDT

发明人： BRUCE BOYLE ,  NICOLAS PACAULT ,  JEAN-MICHEL HACHE ,  REMI HUTIN ,  RAGHU MADHAVAN ,  JACQUES JUNDT

IPC分类号： E21B47/12 ,  E21B17/02 ,  E21B47/00 ,  E21B7/00

CPC分类号： E21B47/12 ,  E21B17/023 ,  E21B17/028 ,  E21B47/122

摘要： A cabled communication link for a drill string includes spaced apart adapter subs within the drill string and a cable connecting the adapter subs for communication of a signal therebetween. The cabled communication link may be drill pipe joints are interconnected within the drill string between adapter subs to form a piped communication link, whereby the cabled communication link establishes a pathway to the piped communication link for transmitting a signal through the drill string. The cabled communication link may also be in a non-wired section of the drill string is disposed between adapter subs, whereby the cabled communication link establishes a pathway for transmitting a signal through the non-wired section of the drill string. Inductive couplings are preferably used for communication across the adapter subs and wired drill pipe joints. Another aspect of the cabled communication employs wireless transceivers at or near the surface of the wellbore.

摘要翻译： 用于钻柱的电缆通信链路包括在钻柱内的间隔开的适配器，以及连接适配器接头以用于在其间进行信号通信的电缆。 电缆通信链路可以是钻杆接头在适配器接头之间的钻柱内互连以形成管道通信链路，由此有线通信链路建立到管道通信链路的路径，用于通过钻柱发送信号。 电缆通信链路也可以在钻柱的非有线部分中设置在适配器接头之间，由此有线通信链路建立用于通过钻柱的非有线部分发送信号的路径。 电感耦合器最好用于通过适配器接头和有线钻杆接头进行通信。 电缆通信的另一方面在井眼表面处或附近采用无线收发器。

公开(公告)号：US06453239B1

公开(公告)日：2002-09-17

申请号：US09327873

申请日：1999-06-08

申请人： Ichiro Shirasaka ,  Kirby G. Schrader ,  Jean-Michel Hache

发明人： Ichiro Shirasaka ,  Kirby G. Schrader ,  Jean-Michel Hache

IPC分类号： E21B4722

CPC分类号： E21B47/022 ,  G01C21/16

摘要： The invention is, in its various aspects, a method and apparatus useful for strapdown inertial navigation and surveying in a borehole. The method comprises maneuvering a probe including three vibrating mass, Coriolis effect gyroscopes in a borehole and initializing the probe's attitude in the borehole within the probe's frame of reference. Three orthogonal, incremental rotation angles and three orthogonal, incremental velocities are determined for the probe within the probe's frame of reference. The incremental rotation angles are determined from the gyroscopes. The method then translates the three incremental velocities from the probe's frame of reference into the inertial frame of reference using the three incremental rotation angles. Next, a velocity vector in a local-vertical, wander-azimuth frame of reference is determined from the translated incremental velocities. A velocity error observation is then obtained. A system error is then estimated from the velocity vector and the velocity error observation. The system error is then fed back into the inertial navigation system for use in refining the method. In as second aspect, the invention is a strapdown, inertial measurement unit. The inertial measurement unit includes a housing, three accelerometers, and three vibrating mass, Coriolis effect gyroscopes. The three accelerometers are mounted within the housing. The three vibrating mass, Coriolis effect are rigidly mounted within the housing.

摘要翻译： 本发明在其各个方面是一种用于在井眼中进行捷联惯导导航和测量的方法和装置。 该方法包括在钻孔中操纵包括三个振动质量的科里奥利效应陀螺仪的探头，并且在探头的参考系中的钻孔中初始化探头的姿态。 针对探头的参考系中的探头确定三个正交的增量旋转角度和三个正交的增量速度。 增量旋转角度由陀螺仪确定。 该方法然后使用三个增量旋转角度将三个增量速度从探头的参考系平移到惯性参考系。 接下来，从平移的增量速度确定局部 - 垂直，漫游方位角参考系中的速度矢量。 然后获得速度误差观察值。 然后从速度矢量和速度误差观察估计系统误差。 然后将系统误差反馈到惯性导航系统中以用于精炼该方法。 在第二方面，本发明是一种捷联惯性测量单元。 惯性测量单元包括壳体，三个加速度计和三个振动质量的科里奥利效应陀螺仪。 三个加速度计安装在外壳内。 三个振动质量，科里奥利效应刚性地安装在外壳内。

公开(公告)号：US4879463A

公开(公告)日：1989-11-07

申请号：US132494

申请日：1987-12-14

申请人： Peter D. Wraight ,  Edouard Marienbach ,  Jean-Michel Hache ,  Erik Rhein-Knudsen ,  Mike Evans

发明人： Peter D. Wraight ,  Edouard Marienbach ,  Jean-Michel Hache ,  Erik Rhein-Knudsen ,  Mike Evans

IPC分类号： E21B47/01 ,  G01V5/12

CPC分类号： G01V5/12 ,  E21B47/011

摘要： A measurement while drilling nuclear tool adapted to be coupled in the drill string to make formation evaluations and methods of using are described. A neutron source is positioned on the cylindrical axis of the tool while a connected gamma ray source is eccentered against an interior side of the cylindrical tool. Both sources can be axially removed from the tool along its interior. Novel source-detector configurations are provided in order to accommodate the constraints of the MWD environment. Gamma ray transparent windows are provided through both the drill collar and an external fluid excluder (stabilizer) at the positions of the gamma ray source and scintillator detectors. Neutron detectors may be of two different types at the same spacing from the source. Corrections are made for microphonic noise that arises while drilling and for natural gamma ray background. A drilling fluid density determination is made and is utilized to compensate for "borehole" or "standoff" effects.