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    Apparatus and method for determining the resitivity of underground formations surrounding a borehole
    4.
    发明授权
    Apparatus and method for determining the resitivity of underground formations surrounding a borehole 失效
    用于确定井眼周围地下地层的电位的装置和方法

    公开(公告)号：US5463320A

    公开(公告)日：1995-10-31

    申请号：US259849

    申请日：1994-06-15

    Applicant: Stephen D. Bonner ,  Richard A. Rosthal ,  Abdullah A. Bagersh ,  Martin G. Luling ,  Jacques A. Jundt

    Inventor： Stephen D. Bonner ,  Richard A. Rosthal ,  Abdullah A. Bagersh ,  Martin G. Luling ,  Jacques A. Jundt

    IPC: G01V3/20 ,  G01V3/18

    CPC classification number: G01V3/20

    Abstract: A logging tool for use in determining the resistivity of an underground formation surrounding a borehole comprises a mandrel with two transmitters spaced apart thereon, each serving to establish a current in the mandrel and in the underground formation. A series of electrodes are spaced along the body between the transmitters and sensors, located at each electrode, measure radial current flow along a path from the mandrel to the underground formation via a respective electrode. Sensors also provide the axial current flowing along the whole mandrel and at positions corresponding to each electrode. A method of determining the formation resistivity includes the steps of measuring the radial currents R.sub.1 R.sub.2 from the mandrel to the formation via each electrode and obtaining the axial currents M.sub.01 M.sub.02 along the mandrel at each electrode due to each transmitter; measuring the total axial current M.sub.12 along the mandrel from the first or second transmitter and deriving the resistivity of the formation from the radial focused current R.sub.c for each electrode according to the relationship R.sub.c =1/M.sub.21 (M.sub.02 R.sub.1 +M.sub.01 R.sub.2).

    Abstract translation: 用于确定围绕钻孔的地下地层的电阻率的测井工具包括具有间隔开的两个发射器的心轴，每个用于在心轴和地下地层中建立电流。 位于每个电极处的发射器和传感器之间的一系列电极沿主体间隔开，测量沿着从心轴经由相应电极到地下地层的路径的径向电流。 传感器还提供沿着整个心轴和对应于每个电极的位置流动的轴向电流。 确定地层电阻率的方法包括以下步骤：通过每个电极测量从心轴到地层的径向电流R1R2，并且由于每个发射器获得每个电极处的心轴处的轴向电流M01M02; 根据Rc = 1 / M21（M02R1 + M01R2）的关系，从第一或第二发射器测量沿着心轴的总轴向电流M12，并从每个电极的径向聚焦电流Rc导出地层的电阻率。

    Simultaneous inversion of induction data for dielectric permittivity and electric conductivity
    5.
    发明授权
    Simultaneous inversion of induction data for dielectric permittivity and electric conductivity 失效
    同时反演介电常数和电导率的感应数据

    公开(公告)号：US08694259B2

    公开(公告)日：2014-04-08

    申请号：US13363932

    申请日：2012-02-01

    Applicant: Martin G. Luling

    Inventor： Martin G. Luling

    IPC: G01V1/40 ,  G01V3/10

    CPC classification number: G01V3/28

    Abstract: A method of inverting induction logging data for evaluating the properties of underground formations surrounding a borehole, the data including induction voltage measurements obtained from a tool placed close to the formations of interest, the method includes: (a) defining a relationship relating the induction voltage to wave number, dielectric permittivity and conductivity; defining a cubic polynomial expansion of the relationship; and solving the cubic polynomial relationship using the voltage measurements to obtain values for conductivity that includes skin-effect correction, and apparent dielectric permittivity; and (b) using the obtained values for conductivity and apparent dielectric permittivity to derive a simulated value of induction voltage; determining the difference between the simulated value of the induction voltage and the measured induction voltage; and iteratively updating the values of conductivity and dielectric permittivity used for the derivation of the simulated value of induction voltage to minimize its difference with respect to the measured value.

    Abstract translation: 一种用于评估围绕钻孔的地下地层的性质的归纳测井数据的方法，所述数据包括从靠近感兴趣的地层放置的工具获得的感应电压测量值，所述方法包括：（a）定义关于感应电压 波数，介电常数和电导率; 定义关系的三次多项式展开; 并使用电压测量求解三次多项式关系，以获得包括皮肤效应校正和表观介电常数的导电性值; 和（b）使用所得到的导电率和表观介电常数值导出感应电压的模拟值; 确定感应电压的模拟值与测得的感应电压之间的差值; 并且迭代地更新用于导出感应电压的模拟值的电导率和介电常数的值，以使其相对于测量值的差异最小化。

    Nano-tips based gas ionization chamber for neutron detection
    6.
    发明授权
    Nano-tips based gas ionization chamber for neutron detection 有权
    基于纳米尖端的气体电离室用于中子检测

    公开(公告)号：US08319175B2

    公开(公告)日：2012-11-27

    申请号：US12872355

    申请日：2010-08-31

    Applicant: Zilu Zhou ,  Markus Berheide ,  Felix Chen ,  Bradley A. Roscoe ,  Joyce Wong ,  Martin G. Luling ,  Olivier Philip

    Inventor： Zilu Zhou ,  Markus Berheide ,  Felix Chen ,  Bradley A. Roscoe ,  Joyce Wong ,  Martin G. Luling ,  Olivier Philip

    IPC: G01V5/04

    CPC classification number: G01T1/16 ,  B82Y15/00 ,  G01T1/18 ,  G01T3/008

    Abstract: Methods and devices relating to a radiation detector comprising of a gas chamber having a cathode plate and a substrate separated by a gap. An array of nano-tips deposited on the substrate that forms an anode structure for electron charge collection. An external power source in communication with the cathode plate and the substrate, wherein the external power source is capable of generating a plurality of regions and each region includes an electric field near each nano-tip of the array of the nano-tips that results in initiating a radiation induced controlled discharge of electrons and ions from at least one gas or at least one gas mixture. Finally, the plurality of regions include multiple generated electric fields near tips of the array of nano-tips such as CNTs, that communicatively create a conductive path between the cathode plate and the substrate, the radiation detector is capable of determining at least one radiation property.

    Abstract translation: 涉及辐射检测器的方法和装置，包括具有阴极板和由间隙隔开的基板的气室。 沉积在衬底上的纳米尖端的阵列，其形成用于电子电荷收集的阳极结构。 与阴极板和衬底连通的外部电源，其中外部电源能够产生多个区域，并且每个区域包括纳米尖端阵列的每个纳米尖端附近的电场，导致导致 引发辐射诱导的电子和离子从至少一种气体或至少一种气体混合物的受控放电。 最后，多个区域包括在诸如CNT之类的纳米尖端阵列的尖端附近的多个产生的电场，其在阴极板和衬底之间通信地形成导电路径，该辐射探测器能够确定至少一个辐射特性 。

    NANO-TIPS BASED GAS IONIZATION CHAMBER FOR NEUTRON DETECTION
    8.
    发明申请
    NANO-TIPS BASED GAS IONIZATION CHAMBER FOR NEUTRON DETECTION 有权
    基于NANO-TIPS的气体离子室进行中子检测

    公开(公告)号：US20120049054A1

    公开(公告)日：2012-03-01

    申请号：US12872355

    申请日：2010-08-31

    Applicant: Zilu Zhou ,  Markus Berheide ,  Felix Chen ,  Bradley A. Roscoe ,  Joyce Wong ,  Martin G. Luling ,  Olivier Philip

    Inventor： Zilu Zhou ,  Markus Berheide ,  Felix Chen ,  Bradley A. Roscoe ,  Joyce Wong ,  Martin G. Luling ,  Olivier Philip

    IPC: G01V5/04 ,  G01T1/185 ,  H01J47/00 ,  G01T3/00 ,  B82Y99/00 ,  B82Y15/00

    CPC classification number: G01T1/16 ,  B82Y15/00 ,  G01T1/18 ,  G01T3/008

    Abstract: Methods and devices relating to a radiation detector comprising of a gas chamber having a cathode plate and a substrate separated by a gap. An array of nano-tips deposited on the substrate that forms an anode structure for electron charge collection. An external power source in communication with the cathode plate and the substrate, wherein the external power source is capable of generating a plurality of regions and each region includes an electric field near each nano-tip of the array of the nano-tips that results in initiating a radiation induced controlled discharge of electrons and ions from at least one gas or at least one gas mixture. Finally, the plurality of regions include multiple generated electric fields near tips of the array of nano-tips such as CNTs, that communicatively create a conductive path between the cathode plate and the substrate, the radiation detector is capable of determining at least one radiation property.

    Abstract translation: 涉及辐射检测器的方法和装置，包括具有阴极板和由间隙隔开的基板的气室。 沉积在衬底上的纳米尖端的阵列，其形成用于电子电荷收集的阳极结构。 与阴极板和衬底连通的外部电源，其中外部电源能够产生多个区域，并且每个区域包括纳米尖端阵列的每个纳米尖端附近的电场，导致导致 引发辐射诱导的电子和离子从至少一种气体或至少一种气体混合物的受控放电。 最后，多个区域包括在诸如CNT之类的纳米尖端阵列的尖端附近的多个产生的电场，其在阴极板和衬底之间通信地形成导电路径，该辐射探测器能够确定至少一个辐射特性 。

    DETERMINATION OF COMPLEX DIELECTRIC CONSTANTS FROM ELECTROMAGNETIC PROPAGATION MEASUREMENTS
    9.
    发明申请
    DETERMINATION OF COMPLEX DIELECTRIC CONSTANTS FROM ELECTROMAGNETIC PROPAGATION MEASUREMENTS 有权
    电磁传播测量中复合电介质常数的测定

    公开(公告)号：US20100324826A1

    公开(公告)日：2010-12-23

    申请号：US12810219

    申请日：2008-12-10

    Applicant: Martin G. Luling

    Inventor： Martin G. Luling

    IPC: G01V3/38

    CPC classification number: G01V3/30

    Abstract: A method of determining the dielectric constant of a formation, comprising acquiring phase-related and amplitude-related measurements for electromagnetic signals propagating though the formation from a transmitter to a receiver; deriving a complex-valued quantity comprising terms relating to the phase shift and attenuation of the signals; defining a one-component complex-valued relationship relating the phase shift, attenuation and complex dielectric constant; and using the derived complex-valued quantity in the defined relationship to obtain a calculated value of the complex dielectric constant. An apparatus for determining the dielectric constant of a formation, comprises a transmitter for transmitting electromagnetic signals into the formation; a receiver for receiving the electromagnetic signals that have propagated from the transmitter through the formation; and means for determining the dielectric constant of the formation in accordance with a method according to the first aspect of the invention.

    Abstract translation: 一种确定地层的介电常数的方法，包括获取通过地层从发射机传播到接收机的电磁信号的相位和振幅相关测量; 导出包括与所述信号的相移和衰减相关的项的复数量; 定义涉及相移，衰减和复介电常数的单分量复值关系; 并以定义的关系使用导出的复数值以获得计算的复介电常数值。 一种用于确定地层的介电常数的装置，包括用于将电磁信号传送到地层中的发射机; 用于接收从发射机通过地层传播的电磁信号的接收机; 以及用于根据本发明的第一方面的方法确定地层的介电常数的装置。

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