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    Method and apparatus for directional resistivity measurement while drilling
    3.
    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
    4.
    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。

    Real time data quality control and determination of formation angles from multicomponent induction measurements using neural networks
    7.
    发明申请
    Real time data quality control and determination of formation angles from multicomponent induction measurements using neural networks 有权
    使用神经网络的多组分感应测量的实时数据质量控制和形成角度的确定

    公开(公告)号：US20070208546A1

    公开(公告)日：2007-09-06

    申请号：US11368906

    申请日：2006-03-06

    申请人： Sheng Fang ,  Leonty Tabarovsky ,  Michael Rabinovich ,  Liming Yu

    发明人： Sheng Fang ,  Leonty Tabarovsky ,  Michael Rabinovich ,  Liming Yu

    IPC分类号： G06F19/00

    CPC分类号： G01V3/28

    摘要： Neural networks may be used to determine and predict formation dip angles and perform quality assurance assessments from data collected with a multi-component induction tool used for well logging. The neural networks make use of corrected, rotated and normalized data to provide the predictions and assessments. Synthetic data using various models is used to train the neural networks. The teachings herein provide for real-time determinations with a substantial degree of accuracy in the results.

    摘要翻译： 可以使用神经网络来确定和预测地层倾角，并通过用于测井的多组分感应工具收集的数据进行质量保证评估。 神经网络使用校正，旋转和归一化的数据来提供预测和评估。 使用各种模型的合成数据用于训练神经网络。 本文的教导提供了在结果中具有相当程度的准确性的实时确定。

    Real time data quality control and determination of formation angles from multicomponent induction measurements using neural networks
    8.
    发明授权
    Real time data quality control and determination of formation angles from multicomponent induction measurements using neural networks 有权
    使用神经网络的多组分感应测量的实时数据质量控制和形成角度的确定

    公开(公告)号：US07496451B2

    公开(公告)日：2009-02-24

    申请号：US11368906

    申请日：2006-03-06

    申请人： Sheng Fang ,  Leonty Tabarovsky ,  Michael Rabinovich ,  Liming Yu

    发明人： Sheng Fang ,  Leonty Tabarovsky ,  Michael Rabinovich ,  Liming Yu

    IPC分类号： G01V1/28 ,  G01V3/18

    CPC分类号： G01V3/28

    摘要： Neural networks may be used to determine and predict formation dip angles and perform quality assurance assessments from data collected with a multi-component induction tool used for well logging. The neural networks make use of corrected, rotated and normalized data to provide the predictions and assessments. Synthetic data using various models is used to train the neural networks. The teachings herein provide for real-time determinations with a substantial degree of accuracy in the results.

    摘要翻译： 可以使用神经网络来确定和预测地层倾角，并通过用于测井的多组分感应工具收集的数据进行质量保证评估。 神经网络使用校正，旋转和归一化的数据来提供预测和评估。 使用各种模型的合成数据用于训练神经网络。 本文的教导提供了在结果中具有相当程度的准确性的实时确定。

    APPARATUS AND SYSTEM FOR GEOSTEERING AND FORMATION EVALUATION UTILIZING IMPROVED ANTENNAS
    9.
    发明申请
    APPARATUS AND SYSTEM FOR GEOSTEERING AND FORMATION EVALUATION UTILIZING IMPROVED ANTENNAS 有权
    用于改善天线的地球物理和地层评估的装置和系统

    公开(公告)号：US20090301781A1

    公开(公告)日：2009-12-10

    申请号：US12135639

    申请日：2008-06-09

    申请人： Sheng Fang ,  Tsili Wang ,  Jack Signorelli ,  Roland E. Chemali

    发明人： Sheng Fang ,  Tsili Wang ,  Jack Signorelli ,  Roland E. Chemali

    IPC分类号： E21B49/00

    CPC分类号： E21B47/01 ,  G01V3/30

    摘要： An apparatus for measuring one or more earth formation properties during applications including formation evaluation and geosteering applications is provided. The apparatus includes: an elongated body; at least one recessed portion on a periphery of the elongated body; an electrically conductive coil forming a closed loop, at least a portion of the coil extending through the at least one recessed portion; and a u-shaped magnetically permeable and non-conductive material disposed between the coil and the at least one recessed portion, the u-shaped material partially surrounding the coil in the at least one recessed portion. A system for measuring one or more properties of an earth formation is also provided.

    摘要翻译： 提供了一种用于在包括地层评估和地质导向应用的应用中测量一个或多个地层形成特性的装置。 该装置包括：细长体; 所述细长体的周边上的至少一个凹部; 形成闭环的导电线圈，所述线圈的至少一部分延伸穿过所述至少一个凹部; 以及设置在所述线圈和所述至少一个凹部之间的u形磁导和非导电材料，所述u形材料部分地围绕所述至少一个凹部中的所述线圈。 还提供了一种用于测量地层的一个或多个性质的系统。

    ANISOTROPY ORIENTATION IMAGE FROM RESISTIVITY MEASUREMENTS FOR GEOSTEERING AND FORMATION EVALUATION
    10.
    发明申请
    ANISOTROPY ORIENTATION IMAGE FROM RESISTIVITY MEASUREMENTS FOR GEOSTEERING AND FORMATION EVALUATION 有权
    用于地球物理和地层评价的电阻测量的各向异性方位图

    公开(公告)号：US20100007348A1

    公开(公告)日：2010-01-14

    申请号：US12501555

    申请日：2009-07-13

    申请人： Sheng Fang ,  Andrew D. Kirkwood ,  Gulamabbas Merchant ,  Eric Hart ,  Tsili Wang

    发明人： Sheng Fang ,  Andrew D. Kirkwood ,  Gulamabbas Merchant ,  Eric Hart ,  Tsili Wang

    IPC分类号： G01V3/18

    CPC分类号： G01V3/28

    摘要： A method for providing an image of a formation surrounding a wellbore, includes: obtaining an apparent conductivity curve from main components of resistivity measurements of the formation; performing fitting for cross-components of the resistivity measurements; calculating scaling factors from the cross-component data; scaling apparent conductivity data by the calculated scaling factors; and plotting the scaled conductivity data to provide the image of the anisotropic formation. A system and a computer program product are disclosed.

    摘要翻译： 一种用于提供围绕井筒的地层的图像的方法，包括：从地层的电阻率测量的主要分量获得表观电导率曲线; 对电阻率测量的交叉分量执行拟合; 从交叉分量数据计算缩放因子; 通过计算的比例因子缩放视在电导率数据; 并绘制缩放的电导率数据以提供各向异性地层的图像。 公开了一种系统和计算机程序产品。