公开(公告)号：US06597170B1

公开(公告)日：2003-07-22

申请号：US09606998

申请日：2000-06-29

申请人： David Beard ,  Gregory Itskovich ,  Arcady Reiderman ,  Songhua Chen

发明人： David Beard ,  Gregory Itskovich ,  Arcady Reiderman ,  Songhua Chen

IPC分类号： G01V300

CPC分类号： G01V3/32 ,  G01N24/081

摘要： Pulse shaping is used for reducing the interference between echo trains of multiple frequency NMR logging applications in a gradient logging tool. The major contribution to the interference between different logging sequences comes from the sidelobes in the spectra of the excitation signal caused by modulating the RF signal with a square pulse. By shaping the tipping pulse in a CPMG pulse sequence, the interference between logging sequences at proximate frequencies is reduced. The shaped pulse may be a smooth function such as the Chebyshev function or it may be a composite of two rectangular pulses. In an alternate embodiment of the invention, the refocusing pulses are also shaped.

摘要翻译： 脉冲整形用于减少梯度测井工具中多次NMR测井应用的回波列之间的干扰。 对不同记录序列之间的干扰的主要贡献来自于通过用平方脉冲调制RF信号引起的激励信号的频谱中的旁瓣。 通过以CPMG脉冲序列整形翻转脉冲，降低了接近频率下记录序列之间的干扰。 成形脉冲可以是诸如切比雪夫功能的平滑功能，或者它可以是两个矩形脉冲的复合。 在本发明的替代实施例中，再聚焦脉冲也被成形。

公开(公告)号：US06445180B1

公开(公告)日：2002-09-03

申请号：US09605265

申请日：2000-06-28

申请人： Arcady Reiderman ,  David Beard

发明人： Arcady Reiderman ,  David Beard

IPC分类号： G01V300

CPC分类号： G01V3/32 ,  G01N24/081

摘要： A novel nuclear magnetic resonance (NMR) probe design for operating in a bore hole to obtaining the NMR characteristics of a region of interest adjacent the bore hole, characterized by a main RF antenna, a magnet, and a spoiler antenna. The spoiler antenna performs as an active shield for generating a resultant RF field that forcefully mismatches the static magnetic field inside the bore hole and substantially does not affects the RF field or antenna sensitivity in the region of interest.

摘要翻译： 一种用于在钻孔中操作以获得邻近钻孔的感兴趣区域的NMR特性的新型核磁共振（NMR）探针设计，其特征在于主RF天线，磁体和扰流天线。 扰流器天线作为主动屏蔽，用于产生有效地使钻孔内的静磁场失配的RF场，并且基本上不影响感兴趣区域中的RF场或天线灵敏度。

公开(公告)号：US06437564B1

公开(公告)日：2002-08-20

申请号：US09846971

申请日：2001-05-01

申请人： Gregory Boris Itskovich ,  David Beard ,  Arcady Reiderman

发明人： Gregory Boris Itskovich ,  David Beard ,  Arcady Reiderman

IPC分类号： G01V300

CPC分类号： G01V3/32 ,  G01N24/081

摘要： The static magnetic field of a permanent magnet used in an NMR tool moves with the tool. NMR measurements made with a moving tool are affected by incomplete polarization of the nuclear spins in the region where the Larmor frequency of static field matches the RF signal frequency. Simulation results show that the in-phase and quadrature components of spin echo signals are affected by the velocity of lateral motion of a logging tool in a borehole. A phase drift indicator is obtained by summing the quadrature and in-phase components over a window and taking the ratio of the windowed sums. The phase drift indicator shows an increase with time. In a tool with a gradient magnetic field, the phase drift indicator increases with time even for no tool motion. The reduction in magnitude of spin echo data due to tool motion alone may be obtained by comparing the magnitude of simulated echoes with and without tool motion.

摘要翻译： 用于NMR工具的永磁体的静磁场随工具移动。 使用移动工具进行的NMR测量受静态场拉莫尔频率与RF信号频率匹配的区域中的核自旋的不完全极化的影响。 模拟结果表明，自旋回波信号的同相和正交分量受井眼测井工具横向运动速度的影响。 通过对窗口上的正交和同相分量进行求和并获取窗口和的比值来获得相位漂移指示符。 相位漂移指示器随着时间的推移而增加。 在具有梯度磁场的工具中，即使没有刀具运动，相位漂移指示器随时间增加。 可以通过比较具有和不具有工具运动的模拟回波的幅度来获得由于单独的工具运动引起的自旋回波数据的幅度的减小。

公开(公告)号：US07420373B2

公开(公告)日：2008-09-02

申请号：US11538935

申请日：2006-10-05

申请人： Arcady Reiderman ,  David Beard

发明人： Arcady Reiderman ,  David Beard

IPC分类号： G01V3/00 ,  G01V3/18 ,  G01R33/12

CPC分类号： G01V3/28

摘要： A sensor for performing micro-conductivity measurements during well logging measurements in a borehole includes a magnetic core having a conductive insert wherein windings are driven with alternating current. Some embodiments include a sensor further having a conductive case. Various aspects of the sensor, such as dimensions and conductive properties of fabrication materials are selected to maximize performance of the sensor. Methods for using the sensor call for, among other things, placing the sensor in a well logging tool, and placing the tool in a well bore. A substantial focusing of the magnetic field on the wall of the borehole is achieved and provides for high quality data.

摘要翻译： 用于在钻孔中测井测量期间执行微电导率测量的传感器包括具有导电插件的磁芯，其中绕组以交流电驱动。 一些实施例包括还具有导电壳体的传感器。 选择传感器的各个方面，例如制造材料的尺寸和导电性能以最大化传感器的性能。 使用传感器的方法除其他外，将传感器放置在测井工具中，并将工具放置在井眼中。 实现磁场在钻孔壁上的实质聚焦，并提供高质量的数据。

公开(公告)号：US20070222453A1

公开(公告)日：2007-09-27

申请号：US11538935

申请日：2006-10-05

申请人： Arcady Reiderman ,  David Beard

发明人： Arcady Reiderman ,  David Beard

IPC分类号： G01V3/00

CPC分类号： G01V3/28

摘要： A sensor for performing micro-conductivity measurements during well logging measurements in a borehole includes a magnetic core having a conductive insert wherein windings are driven with alternating current. Some embodiments include a sensor further having a conductive case. Various aspects of the sensor, such as dimensions and conductive properties of fabrication materials are selected to maximize performance of the sensor. Methods for using the sensor call for, among other things, placing the sensor in a well logging tool, and placing the tool in a well bore. A substantial focusing of the magnetic field on the wall of the borehole is achieved and provides for high quality data.

摘要翻译： 用于在钻孔中测井测量期间执行微电导率测量的传感器包括具有导电插件的磁芯，其中绕组以交流电驱动。 一些实施例包括还具有导电壳体的传感器。 选择传感器的各个方面，例如制造材料的尺寸和导电性能以最大化传感器的性能。 使用传感器的方法除其他外，将传感器放置在测井工具中，并将工具放置在井眼中。 实现磁场在钻孔壁上的实质聚焦，并提供高质量的数据。

公开(公告)号：US06348792B1

公开(公告)日：2002-02-19

申请号：US09677359

申请日：2000-10-02

申请人： David Beard ,  Arcady Reiderman

发明人： David Beard ,  Arcady Reiderman

IPC分类号： G01V300

CPC分类号： G01V3/32 ,  G01N24/081

摘要： A side-looking NMR logging tool incorporates a permanent magnet arrangement having a magnetization direction oriented towards a side of the tool and a dipole RF antenna displaced towards the front of the tool. The magnet arrangement produces a shaped region of investigation in front of the tool wherein the magnetic field has a uniform field strength and the RF field has a uniform field strength in a direction orthogonal to the static field. The shaping of the static field is accomplished by the magnet arrangement comprising a plurality of magnets having parallel magnetization or by a single shaped magnet. The antenna arrangement includes a gapped core made of non-ferritic soft material for increasing the antenna efficiency. The magnet arrangement also reduces ringing in the core and the antenna. An optional RF shield is used to reduce NMR signals from borehole fluids.

摘要翻译： 侧面的NMR测井工具包括具有朝向工具侧面的磁化方向的永磁体装置和朝向工具前部移动的偶极子RF天线。 磁体布置在工具前面产生一个调查的成形区域，其中磁场具有均匀的场强，RF场在与静态场正交的方向上具有均匀的场强。 静电场的成形是通过包括具有平行磁化的多个磁体的磁体布置或由单个磁体形成的。 天线装置包括由非铁素体软材料制成的间隙芯，用于提高天线效率。 磁体布置还减少了磁芯和天线的振铃。 使用可选的RF屏蔽来减少钻井液中的NMR信号。

公开(公告)号：US20070075706A1

公开(公告)日：2007-04-05

申请号：US11541227

申请日：2006-09-29

申请人： Songhua Chen ,  Carl Edwards ,  David Beard

发明人： Songhua Chen ,  Carl Edwards ,  David Beard

IPC分类号： G01V3/00

CPC分类号： G01V3/30 ,  G01V3/32

摘要： The quality factor of a NMR-antenna depends upon mud conductivity, formation resistivity and the borehole size. The Q of the antenna is measured. From measurement of one of formation conductivity or borehole size, the other can be determined.

摘要翻译： NMR天线的质量因素取决于泥浆导电性，地层电阻率和钻孔尺寸。 测量天线的Q值。 从测量地层导电率或钻孔尺寸之一，可以确定另一个。

公开(公告)号：US07301337B2

公开(公告)日：2007-11-27

申请号：US10675187

申请日：2003-09-30

申请人： David Beard

发明人： David Beard

IPC分类号： G01V3/00

CPC分类号： G01N24/081 ,  G01V3/32

摘要： An apparatus and method of obtaining information about a property of interest relating to an earth formation resulting in reduced ringing effects is discussed. A Nuclear Magnetic Resonance (NMR) logging tool is conveyed into a borehole in the earth formation. A first pulse sequence is applied having a first associated measurement frequency, and first NMR signals are measured. The first NMR signals include non-formation signals resulting from an excitation pulse and a refocusing pulse in the first pulse echo sequence. A second and third pulse sequence, at different frequencies from each other and from the first frequency, is applied, and corresponding second and third NMR signals are measured. A phase of the non-formation signals resulting from the first pulse echo sequence and a phase of the non-formation signals resulting from the second and third pulse echo sequences are substantially evenly distributed around a unit circle.

摘要翻译： 讨论了一种获得关于地球物理相关性质的信息的装置和方法，导致振铃效应降低。 核磁共振（NMR）测井工具被输送到地层中的钻孔中。 应用具有第一相关测量频率的第一脉冲序列，并且测量第一NMR信号。 第一NMR信号包括由第一脉冲回波序列中的激发脉冲和再聚焦脉冲产生的非形成信号。 应用彼此不同频率和第一频率的第二和第三脉冲序列，并且测量对应的第二和第三NMR信号。 从第一脉冲回波序列产生的非形成信号的相位和由第二和第三脉冲回波序列产生的非形成信号的相位基本均匀地分布在单位圆周围。

公开(公告)号：US20070252724A1

公开(公告)日：2007-11-01

申请号：US11571172

申请日：2005-06-24

申请人： Andrew Donaghey ,  Ian McDonald ,  David Beard

发明人： Andrew Donaghey ,  Ian McDonald ,  David Beard

IPC分类号： G08G1/09 ,  B60Q1/00 ,  G08G1/123

CPC分类号： H04Q9/00 ,  G01D4/004 ,  G01R22/063 ,  G01R22/10 ,  G06F8/654 ,  G08G1/091 ,  G08G1/092 ,  G08G1/0962 ,  G08G5/0026 ,  Y02B90/242 ,  Y04S20/322

摘要： An alert device for a vehicle including a communications receiver for receiving file fragments for the device, a positioning data receiver for providing vehicle location data, a microcontroller system including a microcontroller and a programmable non-volatile memory system, for building and storing application and data files from the fragments, and executing an alert application of the device by processing at least one application file and associated data identified by configuration instructions included in at least one of the fragments to provide alert data for the vehicle corresponding to the location of the vehicle determined by the application on the basis of the vehicle location data.

摘要翻译： 一种用于车辆的警报装置，包括用于接收用于设备的文件片段的通信接收器，用于提供车辆位置数据的定位数据接收器，包括微控制器和可编程非易失性存储器系统的微控制器系统，用于构建和存储应用和数据 并且通过处理至少一个应用文件和由包括在至少一个片段中的配置指令所识别的相关联的数据来执行设备的警报应用，以提供对应于所确定的车辆的位置的车辆的警报数据 通过应用在车辆位置数据的基础上。

公开(公告)号：US09327799B2

公开(公告)日：2016-05-03

申请号：US13048860

申请日：2011-03-15

申请人： Deo Magakat ,  David Beard ,  Victor Cornejo ,  Kevin Corbalis ,  Michael Morgan

发明人： Deo Magakat ,  David Beard ,  Victor Cornejo ,  Kevin Corbalis ,  Michael Morgan

IPC分类号： B62M1/36 ,  B62M3/00 ,  A63B21/015 ,  A63B22/06 ,  G06F1/16

CPC分类号： A63B22/0605 ,  A63B21/0055 ,  A63B21/015 ,  A63B2022/0611 ,  A63B2220/34 ,  A63B2220/51 ,  B62M3/00 ,  B62M3/003 ,  B62M3/08 ,  G06F1/1632 ,  Y10T29/49826 ,  Y10T74/2164

摘要： A cycle with tapered drivetrain connections. The cycle includes a frame, a crank rotatably connected to the frame, and a driven wheel rotatably connected to the frame. The crank includes a crank arm and a crank spindle rotatably connected to the frame and non-rotatably connected to the crank arm. The crank spindle includes a crank mating surface to interface with the crank arm. The diameter of the crank spindle continuously decreases along at least a portion of the crank mating surface in a lateral direction. The crank arm includes a crank bore to interface with the crank mating surface. At least a portion of the crank bore has a diameter that continuously decreases in lateral direction. At least a portion of the crank bore taper has a taper rate and diameter equal to a taper rate and diameter of at least a portion of the crank spindle taper.

摘要翻译： 具有锥形传动系连接的循环。 该循环包括框架，可旋转地连接到框架的曲柄和可旋转地连接到框架的从动轮。 曲柄包括可旋转地连接到框架并且不可旋转地连接到曲柄臂的曲柄臂和曲柄心轴。 曲柄轴包括与曲柄臂相接的曲柄配合表面。 曲柄轴的直径沿曲柄配合面的至少一部分沿横向方向连续地减小。 曲柄臂包括与曲柄配合表面相接的曲柄孔。 曲柄孔的至少一部分具有在横向方向上连续减小的直径。 曲柄孔锥度的至少一部分具有等于曲柄轴锥度的至少一部分的锥度速率和直径的锥度速率和直径。