利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

6 条记录 (耗时 0.01 秒)

    Method and apparatus for directional resistivity measurement while drilling
    4.
    发明申请
    Method and apparatus for directional resistivity measurement while drilling 有权
    钻孔时方向电阻率测量的方法和装置

    公开(公告)号：US20060186888A1

    公开(公告)日：2006-08-24

    申请号：US11398518

    申请日：2006-04-05

    申请人： Tsili Wang ,  Leonty Tabarovsky ,  Boris Tchakarov ,  John Signorelli ,  Sheng Fang

    发明人： Tsili Wang ,  Leonty Tabarovsky ,  Boris Tchakarov ,  John Signorelli ,  Sheng Fang

    IPC分类号： G01V3/18

    CPC分类号： G01V3/28

    摘要： A measurement-while-drilling or logging while drilling method and apparatus for determining the azimuth of providing magnetic field in a remote formation layer in the vicinity of a down hole resistivity tool. A cross-component magnetic field with substantially orthogonal transmitter and receiver coils is provided. The coil planes are either substantially orthogonal (coaxial coils) or parallel (transverse coils) with respect to, the longitudinal axis of the tool body. The coils are placed on the tool body having a external surface and a plurality of grooves are cut in the external surface of the tool body and oriented substantially horizontally with respect to the longitudinal axis of the tool body for the coils and oriented vertically with respect to the longitudinal axis of the tool body for the coaxial coils. A transverse and coaxial coil are placed in the grooves for transmission or reception of a cross-component transverse magnetic field. Ferrite materials may be inserted in the grooves in between the coil wire and the bottom of the grooves. Multiple receivers, transmitters and frequencies may be used to obtain the maximum possible signal-to-noise ratio. The in-phase or quadrature part of a magnetic field, or a combination of the two, or alternatively, the amplitude and/or phase, of the cross-component magnetic field may be measured and processed to indicate the azimuth of a remote layer boundary, provided that the layer boundary is within the depth of investigation of the tool. Measurements may also be made at continuous or multiple tool azimuths.

    摘要翻译： 在钻孔方法和装置中，用于确定在井下电阻率工具附近的远程地层中提供磁场的方位的钻孔方法和装置。 提供了具有基本上正交的发射器和接收器线圈的交叉分量磁场。 线圈平面相对于工具主体的纵向轴线基本正交（同轴线圈）或平行（横向线圈）。 线圈被放置在具有外表面的工具主体上，并且在工具主体的外表面上切割出多个槽，并且相对于用于线圈的工具主体的纵向轴线基本上水平地定向并相对于 用于同轴线圈的工具主体的纵向轴线。 横向和同轴线圈放置在沟槽中，用于传输或接收横向分量横向磁场。 铁氧体材料可以插入到线圈线和槽的底部之间的凹槽中。 可以使用多个接收器，发射器和频率来获得最大可能的信噪比。 可以测量和处理磁场的同相或正交部分，或两者的组合，或备选地，横分量磁场的振幅和/或相位，以指示远程层边界的方位角 ，条件是层边界在工具的调查深度之内。 也可以在连续或多个工具方位进行测量。

    Remotely located tuning circuits for multi-frequency, multi-puropse induction antennae in downhole tools
    5.
    发明申请
    Remotely located tuning circuits for multi-frequency, multi-puropse induction antennae in downhole tools 审中-公开
    位于井下工具中的多频多点感应天线的远程调谐电路

    公开(公告)号：US20100283468A1

    公开(公告)日：2010-11-11

    申请号：US12215434

    申请日：2008-06-27

    申请人： John Signorelli ,  Samuel Bell ,  Tsili Wang ,  Roland Edward Chemali ,  Sheng Fang

    发明人： John Signorelli ,  Samuel Bell ,  Tsili Wang ,  Roland Edward Chemali ,  Sheng Fang

    IPC分类号： G01V3/12 ,  H01Q7/00

    CPC分类号： G01V3/28

    摘要： A unified circuit without using a relay is proposed to resonate an antenna at more than two frequencies. The use of such analog IC switches are common place for transceiver applications in high RF frequencies (500 MHz and above). However, the use of selectively tuned antennas has for the most part been accomplished by the use of latching relays or fixed value components. The IC switch allows for not only the functionality of a single antenna to be either a transmitter and/or a receiver, but also allows, by adding additional switches to select any number of frequencies to resonate the antenna. This frequency resonation could be at fixed frequency points or sweep in either linear or logarithmic steps. The component selection of capacitors for either method would be controlled by a DSP or other microcontroller device. In one embodiment, an antenna for a downhole measurement tool is provided with a tuning circuit couple by a transformer to at least one antenna. The tuning circuit is disposed entirely within and protected by the hollow body of the tool and selectively tunes the antenna to at least three discrete frequencies. Advantageously, no structural modification is made on the outer surface of the tool to accommodate the tuning circuit. In one embodiment, a switching circuit enables a single antenna to function as both a transmitter and a receiver.

    摘要翻译： 提出一种不使用继电器的统一电路，以便在两个以上的频率下谐振天线。 使用这种模拟IC开关是在高RF频率（500MHz及以上）中的收发器应用的常见之处。 然而，使用选择性调谐天线大部分是通过使用闭锁继电器或固定值组件来实现的。 IC开关不仅可以将单个天线的功能作为发射机和/或接收机，而且还可以通过添加附加开关来选择任意数量的频率来谐振天线。 该频率谐振可以在固定频率点或以线性或对数步长扫描。 任何一种方法的电容器的组件选择将由DSP或其他微控制器设备控制。 在一个实施例中，用于井下测量工具的天线设置有由变压器耦合到至少一个天线的调谐电路。 调谐电路完全设置在工具的中空体内并由其保护，并且选择性地将天线调谐到至少三个离散频率。 有利的是，在工具的外表面上不进行结构修改以容纳调谐电路。 在一个实施例中，开关电路使得单个天线能够用作发射机和接收机两者。