公开(公告)号：US06819110B2

公开(公告)日：2004-11-16

申请号：US10108056

申请日：2002-03-26

申请人： Dzevat Omeragic ,  Cengiz Esmersoy

发明人： Dzevat Omeragic ,  Cengiz Esmersoy

IPC分类号： G01V308

CPC分类号： G01V3/28

摘要： An electromagnetic well logging instrument is disclosed which includes at least one transmitter antenna oriented to have at least some magnetic dipole moment component transverse to an axis of the instrument. The instrument includes at least two receiver antennas oriented to have at least some magnetic dipole moment component transverse to the axis and parallel to the magnetic dipole moment component of the at least one transmitter antenna. The at least two receiver antennas are axially spaced apart from the transmitter antenna so that a response of the instrument to the transverse magnetic dipole moment component is axially substantially on one side of a more distant spaced one of the at least two receiver antennas.

摘要翻译： 公开了一种电磁测井仪器，其包括至少一个定向成具有横向于仪器的轴线的磁偶极矩分量的发射器天线。 所述仪器包括至少两个接收器天线，所述至少两个接收器天线定向成具有横向于所述轴线并且平行于所述至少一个发射器天线的磁偶极矩分量的至少一些磁偶极矩分量。 所述至少两个接收器天线与所述发射器天线轴向间隔开，使得所述仪器对所述横向磁偶极矩分量的响应轴向地基本上位于所述至少两个接收器天线之间更远距离的一个的一侧上。

公开(公告)号：US06646441B2

公开(公告)日：2003-11-11

申请号：US10053043

申请日：2002-01-19

申请人： Larry W. Thompson ,  MacMillian M. Wisler ,  Jian-Qun Wu

发明人： Larry W. Thompson ,  MacMillian M. Wisler ,  Jian-Qun Wu

IPC分类号： G01V308

CPC分类号： G01V3/30

摘要： An electromagnetic wave propagation resistivity borehole logging system comprising multiple groups of electromagnetic transmitter-receiver arrays operating at three frequencies. The borehole logging tool component of the system employs eight transmitters and four receivers. The transmitters and receivers are disposed axially and symmetrically along the major axis of the tool to form four group pairs. Each group pair consists of a transmitter-receiver groups axially and symmetrically on opposing sides of a reference point on the tool. Each, transmitter-receiver group consists of one transmitter assembly and two receiver assemblies. Each transmitter-receiver group is operated at two of three operating frequencies which are 100 kHz, 400 kHz and 2 MHz. The transmitter and receiver assemblies are fabricated to yield azimuthally symmetrical resistivity measurements in a plane essentially perpendicular to the axis of the tool. The system can be embodied as a logging-while-drilling system or as a wireline logging system.

摘要翻译： 一种电磁波传播电阻率井眼测井系统，包括以三个频率工作的多组电磁发射机 - 接收机阵列。 系统的井眼测井工具部件采用八个发射器和四个接收器。 发射器和接收器沿着工具的长轴轴向和对称地布置以形成四组对。 每个组对由在工具上的参考点的相对侧轴向和对称的发射器 - 接收器组组成。 每个发射机 - 接收机组由一个发射器组件和两个接收器组件组成。 每个发射机 - 接收机组的工作频率分别为100 kHz，400 kHz和2 MHz。 发射器和接收器组件被制造成在基本上垂直于工具的轴线的平面中产生方位角对称的电阻率测量。 该系统可以体现为钻井测井系统或电缆测井系统。

公开(公告)号：US06636043B1

公开(公告)日：2003-10-21

申请号：US09948520

申请日：2001-09-07

申请人： Louis Dorren

发明人： Louis Dorren

IPC分类号： G01V308

CPC分类号： G01V3/12

摘要： A vector positional display for use in an underground metal locating system for indicating the relative position of the underground metal with respect to a sensor array. The underground object functions as a RF transmitter, and the antenna array detects the transmitted signal. Commutation of the antenna array causes frequency modulation of the received signal which after demodulation can be used for identifying the direction of the object from the sensor array. A display slot counter accumulates count from a system clock, and resolution decoders determine field of view from the antenna array in locating the object. A zero crossing data probe triggers a display decoder which converts accumulated count to a format for energizing lights in the display unit.

摘要翻译： 用于在地下金属定位系统中用于指示地下金属相对于传感器阵列的相对位置的矢量位置显示。 地下物体用作RF发射器，天线阵列检测发射信号。 天线阵列的换向导致接收信号的频率调制，其在解调之后可用于识别来自传感器阵列的物体的方向。 显示时隙计数器从系统时钟累加计数，分辨率解码器在定位对象时确定天线阵列的视场。 过零数据探测器触发显示解码器，其将累积计数转换为用于在显示单元中激励光的格式。

公开(公告)号：US06573721B1

公开(公告)日：2003-06-03

申请号：US09869876

申请日：2001-07-06

申请人： James Phillip Cull

发明人： James Phillip Cull

IPC分类号： G01V308

CPC分类号： G01V3/081 ,  G01N27/902

摘要： An inspection system include a transmitter and a receiver configured for communication with a remotely positioned processing means. The transmitter and receiver are arranged as a mobile apparatus configured for insertion into any duct, conduit, pipeline, mining shaft, or the like, or any diameter or cross section. The transmitter is configured to transmit an electromagnetic signal to induce an electromagnetic response in the duct and the electromagnetic response is detected by the receiver. The mobile apparatus is self-powered and processes the electromagnetic response prior to communicating the processed response to the remotely positioned processing means as a discrete signal.

摘要翻译： 检查系统包括被配置为与远程定位的处理装置通信的发射机和接收机。 发射器和接收器被布置为被配置为用于插入任何管道，管道，管道，采矿井等或任何直径或横截面中的移动装置。 发射器被配置为传输电磁信号以在管道中引起电磁响应，并且电磁响应由接收器检测。 移动装置是自供电的，并且在将经处理的响应传送到远程定位的处理装置之前作为离散信号处理电磁响应。

公开(公告)号：US06541966B1

公开(公告)日：2003-04-01

申请号：US09719419

申请日：2000-12-12

申请人： Mark N Keene

发明人： Mark N Keene

IPC分类号： G01V308

CPC分类号： G01V3/08

摘要： Apparatus for detecting a metal object comprises a transmitter for generating a pulsed or an alternating magnetic field in the vicinity of the metal object to be detected and a detector for detecting the secondary magnetic field induced in the metal object by the transmitted magnetic field. The detector measures at least three magnetic field gradient components of at least first order of the secondary magnetic field. The apparatus also comprises a processor for determining at least one of the position or the electro-magnetic cross-section or an estimate of the shape of the metal object from the measured magnetic field spatial gradient components. The processor fits the measured components to dipole, multiple dipole, multipole, or extended source models. In a preferred embodiment, the invention may comprise three or more pairs of gradiometric coils, or other sensing means. The detector measures at least five magnetic field gradient components of at least first order, and one or more components of the secondary magnetic field. The detector may be coils, or any other magnetic sensors. The processor enters pre-determined criteria to discriminate against detection of metal objects of no interest or to selectively detect metal objects of interest.

摘要翻译： 用于检测金属物体的装置包括用于在待检测的金属物体附近产生脉冲或交变磁场的发射器和用于通过传输磁场检测在金属物体中感应的次级磁场的检测器。 所述检测器测量所述次级磁场的至少一级的至少三个磁场梯度分量。 该装置还包括处理器，用于根据测量的磁场空间梯度分量确定位置或电磁横截面中的至少一个或金属物体的形状的估计。 处理器将测量的组件与偶极子，多偶极子，多极或扩展源模型相匹配。 在优选实施例中，本发明可以包括三对或更多对梯度计线圈或其他感测装置。 检测器测量至少一级的五个磁场梯度分量和二次磁场的一个或多个分量。 检测器可以是线圈或任何其它磁性传感器。 处理器输入预先确定的标准以区分不感兴趣的金属物体的检测或者选择性地检测感兴趣的金属物体。

公开(公告)号：US06531871B1

公开(公告)日：2003-03-11

申请号：US09697128

申请日：2000-10-27

申请人： Richard Thomas Hay ,  Byron John Sand

发明人： Richard Thomas Hay ,  Byron John Sand

IPC分类号： G01V308

CPC分类号： H01Q13/12 ,  E21B47/122 ,  H01Q1/04 ,  H04B13/02

摘要： An electromagnetic antenna extension assembly for connection downhole into a pipe string between a data transmission unit and an electromagnetic antenna. Further, a method for connecting the data transmission unit with the antenna utilizing the assembly. The antenna includes an outer antenna member and an inner antenna member having a lower electrical connector. The data transmission unit includes an outer transmission member and an inner data transmission tool having an upper electrical connector connectable with the lower connector of the inner antenna member. The assembly includes at least one extension tool comprised of: a conductive outer extension member having an upper end connectable with the outer antenna member and a lower end connectable with the outer transmission member; and a conductive inner extension member within the outer extension member and having an upper end connectable with the lower connector of the inner antenna member and a lower end connectable with the upper connector of the inner data transmission tool, such that the electromagnetic signal is communicable between the data transmission unit and the antenna.

摘要翻译： 一种用于在井下连接到数据传输单元和电磁天线之间的管柱的电磁天线延伸组件。 此外，一种利用组件将数据传输单元与天线连接的方法。 天线包括外部天线构件和具有下部电连接器的内部天线构件。 数据传输单元包括外传输构件和内数据传输工具，其具有可与内天线构件的下连接器连接的上电连接器。 该组件包括至少一个延伸工具，其包括：导电外延伸构件，其具有可与外天线构件连接的上端和可与外传动构件连接的下端; 以及在所述外延伸构件内的导电内延伸构件，并且具有可与内天线构件的下连接器连接的上端，以及可与内数据传输工具的上连接器连接的下端，使得电磁信号可在 数据传输单元和天线。

公开(公告)号：US06476610B1

公开(公告)日：2002-11-05

申请号：US09840694

申请日：2001-04-24

申请人： Roy F. Wiegert ,  Brian L. Price

发明人： Roy F. Wiegert ,  Brian L. Price

IPC分类号： G01V308

CPC分类号： B63G7/06 ,  G01V3/15

摘要： A system and method for sensing magnetic anomalies uses a gradiometer having at least one pair of triaxial magnetometer-accelerometer (TMA) sensors. Each TMA sensor has X, Y, Z magnetic sensing axes and X, Y, Z acceleration sensing axes that are parallel to one another and to the X, Y, Z magnetic sensing and acceleration axes of all other TMA sensors. Each TMA sensor outputs components (Bx, By, Bz) of local magnetic fields and components (Ax, Ay, Az) of local gravitational acceleration fields. The components (Bx, By, Bz) and (Ax, Ay, Az) output from each TMA sensor are processed to generate motion-compensated components (Bcx, Bcy, Bcz) of local magnetic fields. A difference is generated between the motion-compensated components (Bcx, Bcy, Bcz) for each pair of TMA sensors thereby generating differential vector field components (&Dgr;Bx, &Dgr;By,&Dgr;Bz). For improved accuracy, the differential vector field components (&Dgr;Bx, &Dgr;By, &Dgr;Bz) are adjusted using the local gravitational acceleration field components and motion-compensated local magnetic field components in order to compensate for gradiometer motion. Gradient components are generated using the differential vector field components (&Dgr;Bx, &Dgr;By, &Dgr;Bz). In general, for each of the magnetic sensing axes, the gradient components Gij are defined by (&Dgr;Bx/&Dgr;j, &Dgr;By/&Dgr;j, &Dgr;Bz/&Dgr;j), wherein &Dgr;j is a distance between a pair of TMA sensors relative to a j-th one of the X, Y, Z magnetic sensing axes. A scalar-quantity gradient contraction defined as C 2 = ∑ i , j ⁢   ⁢ ( G ij ) 2 is generated for each pair of TMA sensors. The gradient contraction C2 is a robust, rotationally-invariant quantity that changes monotonically with proximity to a magnetic target.

摘要翻译： 用于感测磁异常的系统和方法使用具有至少一对三轴磁力计 - 加速度计（TMA）传感器的梯度计。 每个TMA传感器具有彼此平行的X，Y，Z磁感应轴和X，Y，Z加速度感测轴以及所有其他TMA传感器的X，Y，Z磁感应和加速轴。 每个TMA传感器输出局部重力加速场的局部磁场和分量（Ax，Ay，Az）的分量（Bx，By，Bz）。 对从每个TMA传感器输出的分量（Bx，By，Bz）和（Ax，Ay，Az）进行处理，以产生局部磁场的运动补偿分量（Bcx，Bcy，Bcz）。 在每对TMA传感器的运动补偿分量（Bcx，Bcy，Bcz）之间产生差异，从而产生差分矢量场分量（DELTABx，DELTABy，DELTABz）。 为了提高精度，使用局部重力加速度场分量和运动补偿局部磁场分量调整差分矢量场分量（DELTABx，DELTABy，DELTABz），以补偿梯度计运动。 使用差分矢量场分量（DELTABx，DELTABy，DELTABz）生成梯度分量。 通常，对于每个磁感应轴，梯度分量Gij由（DELTABx / DELTAj，DELTABy / DELTAj，DELTABz / DELTAj）定义，其中DELTAj是一对TMA传感器之间相对于第j个的距离 的X，Y，Z磁感应轴。 为每对TMA传感器生成定量的标量数梯度收缩。 梯度收缩C2是鲁棒的，旋转不变量，其随着与磁性目标的接近而单调变化。

公开(公告)号：US06218840B1

公开(公告)日：2001-04-17

申请号：US09307408

申请日：1999-05-08

申请人： John Fridy Warren

发明人： John Fridy Warren

IPC分类号： G01V308

CPC分类号： H02G9/02 ,  C23F13/06 ,  C23F2213/32 ,  H02G9/00

摘要： The present invention is a means of allowing continuous radio detection of underground utilities while maintaining cathodic insulation of metal utility conduits such as gas mains and pipes. By using a capacitor between a metal gas main and an old metal gas service line, the gas main is isolated from the service line. A short in the tracer line against the old metal gas service line will not result in an electrical connection with the metal gas line that increases the rate of deterioration of the cathodic protection anode. Using the capacitor in the tracer wire system eliminates check points isolating tracer wire sections. In the preferred embodiment of the present invention, the capacitor assembly comprises a ceramic nonpolar capacitor ranging from 0.01 microfarad to 1.0 microfarad encased in an epoxy plastic contained in a case. The tracer wire leads are of 14 gauge oxygen free copper.

摘要翻译： 本发明是一种允许连续地对地下设施进行无线电检测的手段，同时保持诸如燃气主管和管道的金属公用管道的阴极绝缘。 通过在金属气体主体和旧的金属气体服务管线之间使用电容器，气体主体与服务管线隔离。 与旧金属燃气服务线相比，示踪线短路不会导致与金属气体管线的电连接，从而增加阴极保护阳极的劣化速率。 在示踪线系统中使用电容器可以消除检查点隔离示踪线段。 在本发明的优选实施例中，电容器组件包括一个陶瓷非极性电容器，其范围从包含在壳体中的环氧树脂中的0.01微法到1.0微法。 示踪线导线为14号无氧铜。

公开(公告)号：US06788066B2

公开(公告)日：2004-09-07

申请号：US09760679

申请日：2001-01-16

申请人： Macmillan M. Wisler ,  Larry W. Thompson ,  LucVan Puymbroeck ,  Holger Stibbe ,  Hallvard S. Hatloy

发明人： Macmillan M. Wisler ,  Larry W. Thompson ,  LucVan Puymbroeck ,  Holger Stibbe ,  Hallvard S. Hatloy

IPC分类号： G01V308

CPC分类号： E21B47/011 ,  E21B25/00 ,  E21B49/02 ,  G01V3/30

摘要： A highly accurate, fully compensated, high spatial resolution, wave propagation system for measuring dielectric constant and resistivity of fluids or solids in a cylindrical enclosure and method for measuring well core characteristics in-situ or in a laboratory. One embodiment of the invention relies on waves propagated from transmitters above and below two spaced receivers which transmit and receive electromagnetic waves via slots on the inner periphery of a cylinder structure. The data is then processed with a CPU either down hole for later retrieval or on the surface for real-time monitoring.

摘要翻译： 用于测量圆柱形外壳中流体或固体的介电常数和电阻率的高精度，完全补偿，高空间分辨率的波传播系统以及原位或实验室中测量井芯特性的方法。 本发明的一个实施例依赖于从两个间隔开的接收器上方和下方的发射器传播的波，其经由气缸结构的内周上的狭槽发送和接收电磁波。 然后将数据与CPU一起处理，以便后续检索或在表面上进行实时监控。

公开(公告)号：US06717411B2

公开(公告)日：2004-04-06

申请号：US10214471

申请日：2002-08-07

申请人： Svein Ellingsrud ,  Terje Eidesmo ,  Harald Westerdahl ,  Fan-Nian Kong

发明人： Svein Ellingsrud ,  Terje Eidesmo ,  Harald Westerdahl ,  Fan-Nian Kong

IPC分类号： G01V308

CPC分类号： G01V3/088

摘要： A method for investigating subterranean strata. An electromagnetic field is applied using a dipole antenna transmitter and this is detected using a dipole antenna receiver. Phase information is extracted from a refracted wave response and used to identify the presence and/or nature of a subterranean reservoir.

摘要翻译： 一种调查地下地层的方法。 使用偶极天线发射机施加电磁场，并且使用偶极天线接收器来检测电磁场。 从折射波响应中提取相位信息，并用于识别地下储层的存在和/或性质。