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    • 84. 发明申请
    • Electric Field Communication for Short Range Data Transmission in a Borehole
    • 井下短距离数据传输的电场通信
    • US20120299743A1
    • 2012-11-29
    • US13567862
    • 2012-08-06
    • Timothy M. PriceDonald H. Van SteenwykHarold T. Buscher
    • Timothy M. PriceDonald H. Van SteenwykHarold T. Buscher
    • G01V3/12
    • E21B47/122E21B17/028E21B47/14
    • The present invention concerns application of a unique conductive electrode geometry used to form an efficient wideband, one- or two-way wireless data link between autonomous systems separated by some distance along a bore hole drill string. One objective is the establishment of an efficient, high bandwidth communication link between such separated systems, using a unique electrode configuration that also aids in maintaining a physically robust drill string. Insulated or floating electrodes of various selected geometries provide a means for sustaining or maintaining a modulated electric potential adapted for injecting modulated electrical current into the surrounding sub-surface medium. Such modulated current conveys information to the systems located along the drill string by establishing a potential across a receiving insulated or floating electrode.
    • 本发明涉及用于在沿着钻孔钻柱分开一定距离的自主系统之间形成有效的宽带,单向或双向无线数据链路的独特导电电极几何形状的应用。 一个目标是在这种分离的系统之间建立有效的高带宽通信链路,使用独特的电极配置,其也有助于维持物理上坚固的钻柱。 各种选定几何形状的绝缘或浮动电极提供维持或保持适于将调制的电流注入到周围的子表面介质中的调制电位的装置。 这种调制电流通过在接收绝缘或浮置电极上建立电位将信息传送到沿着钻柱定位的系统。
    • 85. 发明申请
    • Downhole Magnetic Measurement While Rotating and Methods of Use
    • 井下磁力测量旋转和使用方法
    • US20100300756A1
    • 2010-12-02
    • US12475927
    • 2009-06-01
    • Neil W. Smith BergstromJames N. TowleMatthew A. White
    • Neil W. Smith BergstromJames N. TowleMatthew A. White
    • G01V3/08E21B47/02E21B47/00E21B7/00E21B7/04G06F19/00
    • G01V3/26
    • Downhole magnetic measurement devices and methods are provided for estimation of magnetic fields during drilling. In certain embodiments, a triaxial vector magnetometer is provided and affixed to a drill string subassembly. While the drill string subassembly is rotating, as during drilling operations, an average total magnetic field value (BTwR) is determined as an average of the instantaneous vector magnitudes of the three measured orthogonal component magnetic fields. In this way, near-bit estimates of the downhole magnetic field may be obtained and used for a variety of functions. These downhole magnetic measurement devices may be useful determining magnetic fields, and estimating borehole inclination and azimuth of drill string subassemblies during drilling operations. Additionally, downhole magnetic measurement devices may be used for detecting the presence and distance to external ferromagnetic materials. In this way, these devices may be used for various applications, including, well avoidance, well intercept, and verification of instrument integrity.
    • 提供井下磁测量装置和方法来估计钻井过程中的磁场。 在某些实施例中,提供三轴向量磁强计并将其固定到钻柱子组件上。 当钻柱子组件旋转时,如在钻井操作期间,平均总磁场值(BTwR)被确定为三个测量的正交分量磁场的瞬时矢量幅度的平均值。 以这种方式,可以获得井下磁场的近位估计并用于各种功能。 这些井下磁测量装置可用于确定磁场,并且在钻井操作期间估计钻柱子组件的井眼倾角和方位角。 此外,井下磁测量装置可用于检测与外部铁磁材料的存在和距离。 以这种方式,这些装置可以用于各种应用,包括良好的避免,井截距和仪器完整性的验证。