公开(公告)号：US06724191B1

公开(公告)日：2004-04-20

申请号：US09852255

申请日：2001-05-09

申请人： James Wagner Larsen

发明人： James Wagner Larsen

IPC分类号： G01V310

CPC分类号： G01V3/104 ,  G01V3/08

摘要： The present invention provides systems and methods which can be employed to locate or detect presence of various materials, including nonferrous metals. These systems include new and useful sensors, circuits, systems and devices which power and/or interoperate with the sensors, and methods of making, operating and using such systems. Any or all of the systems, devices or processes can be combined with other systems, devices or processes disclosed.

摘要翻译： 本发明提供可用于定位或检测包括有色金属在内的各种材料的存在的系统和方法。 这些系统包括与传感器供电和/或互操作的新的和有用的传感器，电路，系统和设备，以及制造，操作和使用这些系统的方法。 任何或所有系统，设备或过程可以与所公开的其他系统，设备或过程组合。

公开(公告)号：US06501276B1

公开(公告)日：2002-12-31

申请号：US09136319

申请日：1998-08-18

申请人： Miro Bosnar

发明人： Miro Bosnar

IPC分类号： G01V310

CPC分类号： G01V3/165

摘要： A frequency domain electromagnetic geophysical mapping instrument has a transmitter, a transmitter coil connected to the transmitter, the transmitter generating current pulse waveforms formed by half-sinusoidal output waveform segments of a waveform having a frequency equal to a resonant frequency of the transmitter coil, and a receiver, in which the transmitter generates current pulses including pulses comprising a plurality of immediately successive half-sinusoidal waveform segments of common polarity. The pulses immediately succeed each other and are of alternating polarity. The pulse lengths may in this case be equal, or vary in a manner providing a desired output spectrum, for example according to a pseudo-random sequence.

摘要翻译： 频域电磁地球物理映射仪具有发射机，与发射机相连的发射机线圈，发射机产生由具有等于发射机线圈的谐振频率的频率的波形的半正弦输出波形段形成的电流脉冲波形，以及 接收器，其中发射器产生包括具有共同极性的多个紧邻连续的半正弦波形段的脉冲的电流脉冲。 脉冲立即成功，交替极性。 在这种情况下，脉冲长度可以相等，或者以提供期望的输出光谱的方式变化，例如根据伪随机序列。

公开(公告)号：US06794875B2

公开(公告)日：2004-09-21

申请号：US10151497

申请日：2002-05-20

申请人： Robert W. Strickland

发明人： Robert W. Strickland

IPC分类号： G01V310

CPC分类号： G01V3/28

摘要： A coil arrangement and method of collecting and processing data in induction logging of wells is disclosed. The coil arrangement includes three essentially identical coils made of elliptical conductive loops lying in a plane tilted from the axis of the logging tool. Each coil is centered on the same point in space. Data are preferably collected by using the coil arrangement for both transmitter and receiver, and transmitting at three closely-spaced frequencies, one from each of the transmitter coils. The transmitted signals are received and recorded, at which time they are operated on mathematically to create rotation of an after-the-fact virtual sonde for measuring desired earth formation properties.

摘要翻译： 公开了一种在井的感应测井中收集和处理数据的线圈布置和方法。 线圈装置包括由位于从测井工具的轴线倾斜的平面中的椭圆导电回路制成的三个基本相同的线圈。 每个线圈都位于空间相同的点上。 优选地通过使用用于发射机和接收机的线圈装置来收集数据，并且以三个紧密间隔的频率发射，每个发射机线圈中的一个。 发送的信号被接收和记录，此时它们在数学上操作以产生用于测量所需地球形成特性的事后虚拟探测器的旋转。

公开(公告)号：US06710599B2

公开(公告)日：2004-03-23

申请号：US10114235

申请日：2002-04-02

申请人： Miroslav Bosnar

发明人： Miroslav Bosnar

IPC分类号： G01V310

CPC分类号： G01V3/104

摘要： A conductivity meter for measuring conductivity of terrain, including a first transmitter coil, a signal generator connected to the first transmitter coil to supply a time-varying current thereto for inducing eddy currents in the terrain, a first receiver coil horizontally spaced from the first transmitter coil, a temperature sensing device for measuring temperature, and a signal processor, including a memory storing a plurality of temperature dependent correction values, for isolating from a signal received by the first receiver coil a secondary signal representative of a secondary magnetic field generated in the terrain by the eddy currents, and determining an apparent terrain conductivity based on the isolated secondary signal and a selected temperature dependent correction value selected from the stored temperature dependent correction values according to a measured temperature received from the temperature sensing device.

摘要翻译： 一种用于测量地形的电导率的电导仪，包括第一发射器线圈，连接到第一发射器线圈的信号发生器，以向其提供时变电流以用于在地形中引起涡流;第一接收器线圈，与第一发射器水平间隔开 线圈，用于测量温度的温度感测装置，以及包括存储多个温度相关校正值的存储器的信号处理器，用于与由第一接收器线圈接收的信号隔离，代表在第一接收器线圈中产生的次级磁场的次级信号 并且根据从温度感测装置接收到的测量温度，基于隔离次级信号和从存储的温度依赖校正值中选择的选择的温度相关校正值来确定表观地形电导率。

公开(公告)号：US06690170B2

公开(公告)日：2004-02-10

申请号：US10113686

申请日：2002-03-29

申请人： Dean M. Homan ,  Gary A. Hazen ,  Richard A. Rosthal ,  David L. Smith ,  Thomas D. Barber ,  Paul Michael Ray ,  Jacques R. Tabanou

发明人： Dean M. Homan ,  Gary A. Hazen ,  Richard A. Rosthal ,  David L. Smith ,  Thomas D. Barber ,  Paul Michael Ray ,  Jacques R. Tabanou

IPC分类号： G01V310

CPC分类号： G01V3/28 ,  H01Q1/04 ,  H01Q7/08 ,  H01Q21/20

摘要： The invention refers to antenna configurations for electromagnetic logging tools. The antennas have one or more electrical conductors disposed on a dielectric substrate wrapped around a core or disposed directly on the core. The conductor or conductors are arranged such that the antenna has a first magnetic dipole moment substantially perpendicular to a longitudinal axis of the core. The invention also refers to antennas adapted for mutual balancing using interleaved conductive paths or disks to alter the magnetic dipole moments to mutually balance the antenna system.

摘要翻译： 本发明涉及用于电磁测井工具的天线结构。 天线具有一个或多个电导体，其布置在缠绕在芯上或直接设置在芯上的电介质衬底上。 导体或导体布置成使得天线具有基本上垂直于芯的纵向轴线的第一磁偶极矩。 本发明还涉及适于使用交错的导电路径或盘来相互平衡以改变磁偶极矩以相互平衡天线系统的天线。

公开(公告)号：US06686742B2

公开(公告)日：2004-02-03

申请号：US09978202

申请日：2001-10-17

申请人： Bruce Halcro Candy

发明人： Bruce Halcro Candy

IPC分类号： G01V310

CPC分类号： G01V3/10

摘要： A metal detector apparatus including a transmit coil which transmits a magnetic field, transmit timing control circuitry which also includes timing for a semiconductor switch, and receive signal circuitry and receive signal processing circuitry, with a transmit coil damping network including at least one resistor connected in series with the semiconductor switch across the transmit coil, and timing control circuitry which generates a timing sequence which is selected so that for at least some of the time no transmit field is generated and at least during part of the transmit signal, the first semiconductor switch is controlled to be off and is turned on before the cessation of the transmit field.

摘要翻译： 一种金属检测器装置，包括发射磁场的发射线圈，还包括半导体开关的定时的发射定时控制电路以及接收信号电路和接收信号处理电路，发射线圈阻尼网络包括至少一个电阻器 与半导体开关串联在发射线圈上的定时控制电路，以及定时控制电路，其产生选择的定时序列，使得在至少一些时间没有产生发射场并且至少在部分发射信号期间，第一半导体开关 被控制为关闭，并且在发射场的停止之前被接通。

公开(公告)号：US06727707B2

公开(公告)日：2004-04-27

申请号：US10254752

申请日：2002-09-25

申请人： Paul L. Sinclair ,  Joseph K. Clontz

发明人： Paul L. Sinclair ,  Joseph K. Clontz

IPC分类号： G01V310

CPC分类号： G01V3/32

摘要： A method and apparatus for a downhole antenna comprising a housing having an outer surface and a longitudinally bored inner cavity, the outer surface having a first slot and a corresponding second slot extending from the outer surface to the longitudinally bored inner cavity; a first removable downhole antenna segment disposed in the first slot in a first transverse cross section of the housing, the first removable downhole antenna segment comprising at least one coil to inductively couple a signal from the longitudinally bored inner cavity to the earth formation. A second removable downhole antenna segment, interchangeable with the first removable downhole antenna segment, disposed in the corresponding second slot, the second slot in a second transverse cross section of the housing, the second removable downhole antenna segment comprising at least one coil to inductively couple a signal from the earth formation to the longitudinally bored inner cavity.

摘要翻译： 一种用于井下天线的方法和装置，包括具有外表面和纵向钻孔的内腔的壳体，所述外表面具有第一槽和从外表面延伸到纵向钻孔内腔的对应的第二槽; 第一可拆卸的井下天线段，其设置在壳体的第一横截面中的第一槽中，第一可拆卸的井下天线段包括至少一个线圈，以将来自纵向无孔内腔的信号感应地耦合到地层。 第二可移动井下天线段，与第一可移动井下天线段可互换，设置在相应的第二槽中，第二槽位于壳体的第二横截面中，第二可拆卸井下天线段包括至少一个线圈以感应耦合 来自地层的信号到纵向无孔的内腔。

公开(公告)号：US06586939B1

公开(公告)日：2003-07-01

申请号：US09471289

申请日：1999-12-24

申请人： Otto N. Fanini ,  Stanislav W. Forgang ,  Michael S. Crosskno

发明人： Otto N. Fanini ,  Stanislav W. Forgang ,  Michael S. Crosskno

IPC分类号： G01V310

CPC分类号： G01V3/28

摘要： A transverse induction logging tool having a transmitter and receiver for downhole sampling of formation properties, the tool having a symmetrical shielded split-coil transmitter coil and a bucking coil interposed between the split transmitter coils to reduce coupling of the transmitter time varying magnetic field into the receiver. The tool provides symmetrical shielding of the coils and grounding at either the transmitter or receiver end only to reduce coupling of induced currents into the received signal. The tool provides an insulator between receiver electronics and the conductive receiver housing having contact with conductive wellbore fluid, to reduce parasitic current flowing in a loop formed by the upper housing, feed through pipe, lower housing and wellbore fluid adjacent the probe housing or mandrel. An internal verification loop is provided to track changes in transmitter current in the real and quadrature component of the received data signal. A galvanic electrode is housed in the same mandrel with the induction logging receiver and transmitter.

摘要翻译： 一种具有发射器和接收器的横向感应测井工具，用于对地层特性进行井下取样，该工具具有对称的屏蔽分离线圈发射器线圈和插入分离的发射器线圈之间的降压线圈，以减少发射机时变磁场的耦合 接收器。 该工具在发射机或接收机端提供线圈的对称屏蔽和接地，以减少感应电流与接收信号的耦合。 该工具在接收器电子设备和与导电井眼流体接触的导电接收器壳体之间提供绝缘体，以减少在由上壳体形成的环路中流动的寄生电流，通过管道，下壳体和邻近探针壳体或心轴的井孔流体供给。 提供内部验证循环以跟踪接收数据信号的实数和正交分量中发射机电流的变化。 电感电极与感应测井接收器和变送器一起安装在相同的心轴上。

公开(公告)号：US06534985B2

公开(公告)日：2003-03-18

申请号：US09736406

申请日：2000-12-15

申请人： John Scott Holladay, III ,  James Leonard Corbett Lee

发明人： John Scott Holladay, III ,  James Leonard Corbett Lee

IPC分类号： G01V310

CPC分类号： G01V3/104

摘要： An electromagnetic sensing apparatus which has an electromagnetic transmitter, at least one receiver device, at least one calibration device, a switch and a processor. The transmitter generates a transmitter signal. The receiver device is spaced from the transmitter, senses an electromagnetic field proximate thereto and generates a receiver signal. The calibration device senses an electromagnetic field proximate thereto and generates a calibration signal. The calibration device is positioned such that the distance between the transmitter and the receiver device is greater than the distance between the transmitter and the calibration device. The switch is connected between the receiver device and the calibration device. The processor includes a first input for receiving a signal from one of the at least one receiver device and the calibration device and a second input for receiving a signal from the switch and compares the first input and second input and monitors distortions in the transmitter signal.

摘要翻译： 一种具有电磁发射器，至少一个接收器装置，至少一个校准装置，开关和处理器的电磁感测装置。 发射机产生发射机信号。 接收机设备与发射机间隔开，感测靠近其的电磁场并产生接收机信号。 校准装置感测靠近其的电磁场并产生校准信号。 校准装置被定位成使得发射器和接收器装置之间的距离大于发射器和校准装置之间的距离。 开关连接在接收器和校准装置之间。 处理器包括用于从至少一个接收机装置和校准装置之一接收信号的第一输入端和用于从开关接收信号并比较第一输入和第二输入并监测发射机信号中的失真的第二输入端。

公开(公告)号：US06529008B1

公开(公告)日：2003-03-04

申请号：US09579682

申请日：2000-05-26

申请人： Moustafa Abdel Kader Mohamed

发明人： Moustafa Abdel Kader Mohamed

IPC分类号： G01V310

CPC分类号： G01V3/10 ,  G01V3/081

摘要： An electromagnetic induction coil includes a casing with high magnetic permeability with a magnet disposed within the casing. The magnet has a central hole. A core with high magnetic permeability is disposed within the central hole of the magnet. The core is in physical contact with the casing. A multi-loop coil of conductive wire is disposed within the central hole of the magnet encircling the core. The multi-loop coil is insulated from the magnet.

摘要翻译： 电磁感应线圈包括具有高磁导率的外壳，磁体设置在壳体内。 磁铁有一个中心孔。 具有高磁导率的芯设置在磁体的中心孔内。 核心与壳体物理接触。 导线的多环线圈设置在环绕芯的磁铁的中心孔内。 多回路线圈与磁铁绝缘。