公开(公告)号：US07859260B2

公开(公告)日：2010-12-28

申请号：US11494043

申请日：2006-07-27

申请人： Arcady Reiderman

发明人： Arcady Reiderman

IPC分类号： G01V3/00

CPC分类号： G01R33/5616 ,  G01N24/081 ,  G01R33/3808 ,  G01R33/381 ,  G01R33/383 ,  G01R33/445 ,  G01V3/32

摘要： A nuclear magnetic resonance sensing apparatus and method for operating in an earth borehole comprises a source of switchable magnetic field to polarize nuclei in the region of interest, said source comprising a coil wound on a magnetic core having controllable residual magnetization. Maintaining the magnetization of the core during a polarization interval does not require steady current in the coil. Switching intensity and polarity of magnetization of the core causes precession of spin magnetic moments of the nuclei; the precession induces a signal indicative of nuclear magnetic resonance properties of earth formations.

摘要翻译： 用于在地球钻孔中操作的核磁共振感测装置和方法包括可切换磁场源，以使感兴趣区域中的核极化，所述源包括卷绕在具有可控剩余磁化强度的磁芯上的线圈。 在极化间隔期间保持芯的磁化不需要线圈中的稳定电流。 芯的磁化强度和磁化极性引起核的自旋磁矩的进动; 进动引起了表示地层的核磁共振特性的信号。

公开(公告)号：US07834622B2

公开(公告)日：2010-11-16

申请号：US11874532

申请日：2007-10-18

申请人： Arcady Reiderman ,  David R. Beard ,  Carl M. Edwards

发明人： Arcady Reiderman ,  David R. Beard ,  Carl M. Edwards

IPC分类号： G01V3/00

CPC分类号： G01V3/32 ,  H01F7/0278 ,  H01F7/04 ,  H01F7/20 ,  Y10T29/49075

摘要： A magnet assembly for measuring properties of a formation from a borehole, the magnet assembly including a first device and a second device, each device adapted for insertion into the borehole, the first device producing a first magnetic field, the second device producing a second magnetic field; wherein the second magnetic field is configurable for one of reinforcing and reducing the first magnetic field; and wherein the first device comprises a permanent magnet and the second device comprises at least one of one of a switchable magnet and switching windings.

摘要翻译： 一种用于从钻孔测量地层的性质的磁体组件，所述磁体组件包括第一装置和第二装置，每个装置适于插入到所述钻孔中，所述第一装置产生第一磁场，所述第二装置产生第二磁场 领域; 其中所述第二磁场可配置用于加强和减小所述第一磁场中的一个; 并且其中所述第一装置包括永磁体，并且所述第二装置包括可切换磁体和开关绕组中的至少一个。

公开(公告)号：US07726193B2

公开(公告)日：2010-06-01

申请号：US11862965

申请日：2007-09-27

申请人： Arcady Reiderman ,  Stanislav W. Forgang

发明人： Arcady Reiderman ,  Stanislav W. Forgang

IPC分类号： G01N29/06 ,  G01N29/24

CPC分类号： G01N29/2412 ,  B06B1/04 ,  G01N29/32

摘要： The electromagnetic acoustic transducer (EMAT) transducer disclosed herein is useful for the non-destructive analysis of objects. The transducer comprises a core having a winding and a coil disposed between the core and the object to be analyzed. One transducer can be used as a transmitter and another transducer as a receiver. Then selectively switching static magnetic field in either transmitter or receiver and processing data with and without static magnetic field allows for eliminating artifacts due to parasitic coupling between the transmitter/receiver pair. The switching of the static magnetic field can be implemented either by using electromagnet or a pair of permanent magnets where magnetization of one permanent magnet is reversed to provide cancellation of the static magnetic field.

摘要翻译： 本文公开的电磁声换能器（EMAT）换能器对于物体的非破坏性分析是有用的。 换能器包括具有绕组和设置在芯和待分析对象之间的线圈的芯。 一个传感器可以用作发射器，另一个传感器可以用作接收器。 然后，选择性地切换发射机或接收机中的静态磁场以及使用和不使用静态磁场的处理数据，可以消除由于发射机/接收机对之间的寄生耦合引起的伪影。 静磁场的切换可以通过使用电磁体或一对永磁体来实现，其中一个永磁体的磁化反转以提供静磁场的抵消。

公开(公告)号：US20090102478A1

公开(公告)日：2009-04-23

申请号：US11874532

申请日：2007-10-18

申请人： Arcady Reiderman ,  David R. Beard ,  Carl M. Edwards

发明人： Arcady Reiderman ,  David R. Beard ,  Carl M. Edwards

IPC分类号： G01V3/00 ,  H01F7/06

CPC分类号： G01V3/32 ,  H01F7/0278 ,  H01F7/04 ,  H01F7/20 ,  Y10T29/49075

摘要： A magnet assembly for measuring properties of a formation from a borehole, the magnet assembly including a first device and a second device, each device adapted for insertion into the borehole, the first device producing a first magnetic field, the second device producing a second magnetic field; wherein the second magnetic field is configurable for one of reinforcing and reducing the first magnetic field; and wherein the first device comprises a permanent magnet and the second device comprises at least one of one of a switchable magnet and switching windings.

摘要翻译： 一种用于从钻孔测量地层的性质的磁体组件，所述磁体组件包括第一装置和第二装置，每个装置适于插入到所述钻孔中，所述第一装置产生第一磁场，所述第二装置产生第二磁场 领域; 其中所述第二磁场可配置用于加强和减小所述第一磁场中的一个; 并且其中所述第一装置包括永磁体，并且所述第二装置包括可切换磁体和开关绕组中的至少一个。

公开(公告)号：US20090084185A1

公开(公告)日：2009-04-02

申请号：US11862965

申请日：2007-09-27

申请人： Arcady Reiderman ,  Stanislav W. Forgang

发明人： Arcady Reiderman ,  Stanislav W. Forgang

IPC分类号： G01N29/04

CPC分类号： G01N29/2412 ,  B06B1/04 ,  G01N29/32

摘要： The electromagnetic acoustic transducer (EMAT) transducer disclosed herein is useful for the non-destructive analysis of objects. The transducer comprises a core having a winding and a coil disposed between the core and the object to be analyzed. One transducer can be used as a transmitter and another transducer as a receiver. Then selectively switching static magnetic field in either transmitter or receiver and processing data with and without static magnetic field allows for eliminating artifacts due to parasitic coupling between the transmitter/receiver pair. The switching of the static magnetic field can be implemented either by using electromagnet or a pair of permanent magnets where magnetization of one permanent magnet is reversed to provide cancellation of the static magnetic field.

摘要翻译： 本文公开的电磁声换能器（EMAT）换能器对于物体的非破坏性分析是有用的。 换能器包括具有绕组和设置在芯和待分析对象之间的线圈的芯。 一个传感器可以用作发射器，另一个传感器可以用作接收器。 然后，选择性地切换发射机或接收机中的静态磁场以及使用和不使用静态磁场的处理数据，可以消除由于发射机/接收机对之间的寄生耦合引起的伪影。 静磁场的切换可以通过使用电磁体或一对永磁体来实现，其中一个永磁体的磁化反转以提供静磁场的抵消。

公开(公告)号：US07423426B2

公开(公告)日：2008-09-09

申请号：US11743863

申请日：2007-05-03

申请人： Arcady Reiderman

发明人： Arcady Reiderman

IPC分类号： G01V3/00

CPC分类号： G01V3/32 ,  G01N24/081 ,  G01R33/445 ,  G01R33/5617

摘要： A downhole nuclear magnetic resonance method for measuring a property of a formation, the method includes applying a polarizing magnetic field to the formation, the field including a spatial distribution of magnitude; selecting an investigation region of the formation; decaying the polarizing magnetic field according to a decay shape to provide for substantially exciting only nuclei in the investigation region; and measuring signals induced by precession of the nuclei in the investigation region.

摘要翻译： 一种用于测量地层性质的井下核磁共振方法，所述方法包括向所述地层施加偏振磁场，所述场包括大小的空间分布; 选择形成的调查区域; 根据衰减形状衰减极化磁场，以在调查区域中提供基本上令人兴奋的核; 以及在调查区域测量由细胞核进行引起的信号。

公开(公告)号：US20060255799A1

公开(公告)日：2006-11-16

申请号：US11494043

申请日：2006-07-27

申请人： Arcady Reiderman

发明人： Arcady Reiderman

IPC分类号： G01V3/00

CPC分类号： G01R33/5616 ,  G01N24/081 ,  G01R33/3808 ,  G01R33/381 ,  G01R33/383 ,  G01R33/445 ,  G01V3/32

摘要： A nuclear magnetic resonance sensing apparatus and method for operating in an earth borehole comprises a source of switchable magnetic field to polarize nuclei in the region of interest, said source comprising a coil wound on a magnetic core having controllable residual magnetization. Maintaining the magnetization of the core during a polarization interval does not require steady current in the coil. Switching intensity and polarity of magnetization of the core causes precession of spin magnetic moments of the nuclei; the precession induces a signal indicative of nuclear magnetic resonance properties of earth formations.

摘要翻译： 用于在地球钻孔中操作的核磁共振感测装置和方法包括可切换磁场源，以使感兴趣区域中的核极化，所述源包括卷绕在具有可控剩余磁化强度的磁芯上的线圈。 在极化间隔期间保持磁芯的磁化不需要线圈中的稳定电流。 芯的磁化强度和磁化极性引起核的自旋磁矩的进动; 进动引起了表示地层的核磁共振特性的信号。

公开(公告)号：US20050065431A1

公开(公告)日：2005-03-24

申请号：US10669043

申请日：2003-09-23

申请人： Arcady Reiderman ,  Gersh Taicher ,  Zinovy Krugliak

发明人： Arcady Reiderman ,  Gersh Taicher ,  Zinovy Krugliak

IPC分类号： A61B5/055 ,  A61B5/05

CPC分类号： A61B5/055

摘要： A method is disclosed for analyzing body composition. The method includes inducing a static magnetic field in the body. The static magnetic field has a known distribution along a longitudinal axis of the body. A radio frequency magnetic field is induced in the body. The radio frequency and a bandwidth thereof are selected to induce nuclear magnetic resonance phenomena in a selected axial segment along the body. Nuclear magnetic resonance phenomena are from the selected axial segment. Composition is determined from the magnetic resonance signals. The measurement may be repeated in different axial segments by changing the static field amplitude or a frequency of the RF magnetic field. In some embodiments, a gradient field is superimposed over the static field.

摘要翻译： 公开了一种用于分析身体组成的方法。 该方法包括在体内诱发静磁场。 静磁场沿着身体的纵向轴线具有已知的分布。 在体内诱发射频磁场。 选择射频及其带宽以沿着身体在选定的轴向段中引起核磁共振现象。 核磁共振现象来自选定的轴向段。 组成是从磁共振信号确定的。 可以通过改变静磁场幅度或RF磁场的频率在不同的轴向段中重复测量。 在一些实施例中，梯度场叠加在静态场上。

公开(公告)号：US06844727B2

公开(公告)日：2005-01-18

申请号：US10177618

申请日：2002-06-20

申请人： Thomas Kruspe ,  Arcady Reiderman ,  Martin Blanz ,  Peter Rottengatter

发明人： Thomas Kruspe ,  Arcady Reiderman ,  Martin Blanz ,  Peter Rottengatter

IPC分类号： G01R33/34 ,  G01R33/44 ,  G01V3/32 ,  G01V3/00 ,  G01V3/10 ,  H01Q1/04

CPC分类号： G01V3/32 ,  G01N24/081 ,  G01R33/34

摘要： The present invention provides a novel use of a material having a high internal magnetostrictive damping and/ or using material with explicitly low magnetostriction as a NMR probe core material. The probe structural geometry facilitates the use of material, which has a relatively low magnetic permeability.

摘要翻译： 本发明提供具有高内磁致伸缩阻尼和/或使用具有明显低磁致伸缩的材料作为NMR探针芯材料的材料的新用途。 探头结构几何便于使用具有较低磁导率的材料。

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。