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71. 发明授权

US5448227A Method of and apparatus for making near-bit measurements while drilling 失效
标题翻译：在钻孔时进行近位测量的方法和装置
公开(公告)号：US5448227A
公开(公告)日：1995-09-05
申请号：US150941
申请日：1993-11-10
申请人： Jacques Orban , Neil W. Richardson
发明人： Jacques Orban , Neil W. Richardson
IPC分类号： E21B7/06 , E21B47/022 , E21B47/16 , E21B47/18 , G01V1/40
CPC分类号： E21B47/16 , E21B47/022 , E21B47/18 , E21B7/068
摘要： In accordance with illustrative embodiments of the present invention, a measuring-while-drilling system includes a sensor sub positioned at the lower end of a downhole motor assembly so that the sub is located near the drill bit. The sub houses instrumentalities that measure various downhole parameters such as inclination of the borehole, the natural gamma ray emission of the formations, the electrical resistivity of the formations, and a number of mechanical drilling performance parameters. Sonic or electromagnetic telemetry signals representing these measurements are transmitted uphole to a receiver associated with a conventional MWD tool located above the motor, and telemetered by this tool to the surface substantially in real time. The system has particular application to accurate control over the drilling of extended reach and horizontally drilled wells.
摘要翻译：根据本发明的说明性实施例，钻井测量系统包括位于井下电机组件的下端处的传感器子，使得子部件位于钻头附近。测量各种井下参数（如井眼倾角，地层的自然伽马射线发射，地层电阻率以及机械钻井性能参数）的各种工具。表示这些测量的声波或电磁遥测信号在井上传输到与位于电动机上方的常规MWD工具相关联的接收器，并且基本上实时地由该工具遥测到表面。该系统特别适用于对延伸钻井和水平井钻井的精确控制。

72. 发明授权

US5373481A Sonic vibration telemetering system 失效
标题翻译：声波振动遥测系统
公开(公告)号：US5373481A
公开(公告)日：1994-12-13
申请号：US86567
申请日：1993-07-06
申请人： Jacques Orban , Roy Squire
发明人： Jacques Orban , Roy Squire
IPC分类号： E21B47/16 , G01V1/40
CPC分类号： E21B47/16
摘要： In accordance with illustrative embodiments of the present invention, a sonic vibration transmitter that is used, for example, in telemetering measurements made while drilling includes a body that mounts a stack of ceramic crystals which generate bursts of sonic vibrations when excited by encoded electrical signals that represent such measurements. The vibrations are coupled into a metal member of a drill string such as a drill collar by a coupling block that is held tightly between a shoulder on the metal member and the outer end of the stack of crystals by a strong spring that also permits longitudinal dimensional changes under high downhole temperatures. The sonic vibrations are sensed at a remote location on another metal member by a transducer that can be constructed substantially identical to the above-mentioned stack of crystals, of an accelerometer. The output signals of the transducer are filtered, amplified, and processed. Preferably the excitation signals are encoded digitally in accordance with repetition rate of the bursts. Adjacent pairs of such transducers can be used as repeater stations at spaced locations in the drill string to transmit signals from downhole toward the surface.
摘要翻译：根据本发明的说明性实施例，用于例如在钻孔时进行的遥测测量中使用的声波振动发射器包括安装一堆陶瓷晶体的主体，当由编码的电信号激发时产生一连串的声波振动，代表这样的测量。振动通过耦合块耦合到诸如钻铤的钻柱的金属构件中，该联接块通过强弹簧紧密地保持在金属构件上的肩部和晶体叠层的外端之间，强弹簧也允许纵向尺寸在高井下温度下变化。在另一金属构件上的远程位置处，通过可与构造成与加速度计的上述叠加的晶体结构基本相同的换能器来感测声音振动。传感器的输出信号被过滤，放大和处理。优选地，激励信号根据突发的重复率数字地编码。相邻的这样的传感器对可以用作钻柱中的间隔位置的中继站，以将信号从井下向地面传输。

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