公开(公告)号：US20120169334A1

公开(公告)日：2012-07-05

申请号：US12981116

申请日：2010-12-29

申请人： Timothy Hopper ,  Martin Hurlimann ,  Yi-Qiao Song

发明人： Timothy Hopper ,  Martin Hurlimann ,  Yi-Qiao Song

IPC分类号： G01R33/48

CPC分类号： G01N24/081 ,  G01R33/302 ,  G01R33/34007 ,  G01R33/34053 ,  G01R33/3635 ,  G01R33/445

摘要： Methods and related apparatuses of a downhole micro nuclear magnetic resonance (NMR) device having a resonant tuning (LC) circuit for use in a formation for collecting NMR signals from a fluid in the formation while under downhole pressures and temperatures. The downhole micro NMR device includes: a micro tube for the flowing fluid to flow therethrough; at least one magnet disposed about the micro tube; and at least one micro RF coil structured and arranged approximate to the micro tube and tuned to a Larmor frequency corresponding to a applied magnetic field from the at least one magnet.

摘要翻译： 具有谐振调谐（LC）电路的井下微核磁共振（NMR）装置的方法和相关装置，所述谐振调谐（LC）电路用于在井下压力和温度下从地层中的流体收集NMR信号的地层中。 所述井下微型NMR装置包括：用于流动流体流过的微管; 设置在所述微管周围的至少一个磁体; 以及至少一个微型RF线圈，其构造和布置成近似于微管并被调谐到对应于来自所述至少一个磁体的所施加的磁场的拉莫尔频率。

公开(公告)号：US08773125B2

公开(公告)日：2014-07-08

申请号：US12981116

申请日：2010-12-29

申请人： Timothy Hopper ,  Martin Hurlimann ,  Yi-Qiao Song

发明人： Timothy Hopper ,  Martin Hurlimann ,  Yi-Qiao Song

IPC分类号： G01R33/48

CPC分类号： G01N24/081 ,  G01R33/302 ,  G01R33/34007 ,  G01R33/34053 ,  G01R33/3635 ,  G01R33/445

摘要： Methods and related apparatuses of a downhole micro nuclear magnetic resonance (NMR) device having a resonant tuning (LC) circuit for use in a formation for collecting NMR signals from a fluid in the formation while under downhole pressures and temperatures. The downhole micro NMR device includes: a micro tube for the flowing fluid to flow therethrough; at least one magnet disposed about the micro tube; and at least one micro RF coil structured and arranged approximate to the micro tube and tuned to a Larmor frequency corresponding to a applied magnetic field from the at least one magnet.

摘要翻译： 具有谐振调谐（LC）电路的井下微核磁共振（NMR）装置的方法和相关装置，所述谐振调谐（LC）电路用于在井下压力和温度下从地层中的流体收集NMR信号的地层中。 所述井下微型NMR装置包括：用于流动流体流过的微管; 设置在所述微管周围的至少一个磁体; 以及至少一个微型RF线圈，其构造和布置成近似于微管并被调谐到对应于来自所述至少一个磁体的所施加的磁场的拉莫尔频率。

公开(公告)号：US20080024128A1

公开(公告)日：2008-01-31

申请号：US11496557

申请日：2006-07-31

申请人： Yi-Qiao Song ,  Nicolas Caudal ,  Martin Hurlimann ,  Eric E. Sigmund

发明人： Yi-Qiao Song ,  Nicolas Caudal ,  Martin Hurlimann ,  Eric E. Sigmund

IPC分类号： G01V3/00

CPC分类号： G01R33/5617 ,  G01N24/081 ,  G01R33/445 ,  G01R33/448 ,  G01R33/56341

摘要： Methods and pulse sequences for facilitating nuclear magnetic resonance (NMR) measurements in grossly inhomogeneous fields. Methods and pulse sequences according to the invention may be used to accurately measure variables such as transverse relaxation time, longitudinal relaxation time, and diffusion, without the need for data at long recovery time, thereby allowing for faster measurements. In addition, methods and pulse sequences according to embodiment of the invention may allow simultaneous encoding of information in both the amplitude and the shape of echoes, so as to allow a single-shot measurement of multiple variables, e.g., both transverse relaxation time (from the decay of echo amplitudes) and longitudinal relaxation time (from the echo shape). CPMG detection may be used to overcome the often limited signal-to-noise ratio in grossly inhomogeneous fields.

摘要翻译： 用于促进在非常不均匀的场中进行核磁共振（NMR）测量的方法和脉冲序列。 根据本发明的方法和脉冲序列可以用于精确地测量诸如横向弛豫时间，纵向松弛时间和扩散的变量，而不需要在长恢复时间的数据，从而允许更快的测量。 此外，根据本发明的实施例的方法和脉冲序列可以允许在回波的幅度和形状两者中同时编码信息，以允许单次测量多个变量，例如横向弛豫时间（从 回波幅度的衰减）和纵向弛豫时间（从回波形状）。 可以使用CPMG检测来克服在非常不均匀场中经常受限的信噪比。

公开(公告)号：US09069098B2

公开(公告)日：2015-06-30

申请号：US13228715

申请日：2011-09-09

申请人： Timothy Hopper ,  David G. Cory ,  Yi-Qiao Song ,  Martin D. Hurlimann

发明人： Timothy Hopper ,  David G. Cory ,  Yi-Qiao Song ,  Martin D. Hurlimann

IPC分类号： G01V3/32 ,  G01R33/3415 ,  G01N24/08

CPC分类号： G01V3/32 ,  G01N24/081 ,  G01R33/3415

摘要： An NMR apparatus disposed in a wellbore and having an array of two or more NMR sensors located at substantially the same axial position on the NMR apparatus and having different directional sensitivities is used to acquire an NMR signal from at least two of the two or more NMR sensors. The NMR signals are combined to obtain borehole information. The borehole information may include an azimuthal image of the formation surrounding the borehole. The azimuthal image may be a formation porosity image, a formation bound fluid image, a T2 distribution image, a T2 log mean image, a formation permeability image, or a formation fluid viscosity image. If two or more pre-amplifiers and receiver circuitry are also provided, the NMR signals may be combined prior to passing through the pre-amplifiers and receiver circuitry to improve the signal to noise ratio of the total signal from the desired sample space.

摘要翻译： 设置在井筒中并且具有位于NMR装置上基本上相同的轴向位置且具有不同方向灵敏度的两个或更多个NMR传感器的阵列的NMR装置用于从两个或更多个NMR中的至少两个获得NMR信号 传感器。 NMR信号被组合以获得井眼信息。 钻孔信息可以包括围绕钻孔的地层的方位角图像。 方位角图像可以是地层孔隙度图像，地层结合流体图像，T2分布图像，T2对数平均图像，地层渗透率图像或地层流体粘度图像。 如果还提供两个或更多个前置放大器和接收器电路，则可以在通过前置放大器和接收器电路之前组合NMR信号，以提高来自期望采样空间的总信号的信噪比。

公开(公告)号：US20130063142A1

公开(公告)日：2013-03-14

申请号：US13228715

申请日：2011-09-09

申请人： Timothy Hopper ,  David G. Cory ,  Yi-Qiao Song ,  Martin D. Hurlimann

发明人： Timothy Hopper ,  David G. Cory ,  Yi-Qiao Song ,  Martin D. Hurlimann

IPC分类号： G01V3/00

CPC分类号： G01V3/32 ,  G01N24/081 ,  G01R33/3415

摘要： An NMR apparatus disposed in a wellbore and having an array of two or more NMR sensors located at substantially the same axial position on the NMR apparatus and having different directional sensitivities is used to acquire an NMR signal from at least two of the two or more NMR sensors. The NMR signals are combined to obtain borehole information. The borehole information may include an azimuthal image of the formation surrounding the borehole. The azimuthal image may be a formation porosity image, a formation bound fluid image, a T2 distribution image, a T2 log mean image, a formation permeability image, or a formation fluid viscosity image. If two or more pre-amplifiers and receiver circuitry are also provided, the NMR signals may be combined prior to passing through the pre-amplifiers and receiver circuitry to improve the signal to noise ratio of the total signal from the desired sample space.

摘要翻译： 设置在井筒中并且具有位于NMR装置上基本上相同的轴向位置且具有不同方向灵敏度的两个或更多个NMR传感器的阵列的NMR装置用于从两个或更多个NMR中的至少两个获得NMR信号 传感器。 NMR信号被组合以获得井眼信息。 钻孔信息可以包括围绕钻孔的地层的方位角图像。 方位角图像可以是地层孔隙度图像，地层结合流体图像，T2分布图像，T2对数平均图像，地层渗透率图像或地层流体粘度图像。 如果还提供两个或更多个前置放大器和接收器电路，则可以在通过前置放大器和接收器电路之前组合NMR信号，以提高来自期望采样空间的总信号的信噪比。

公开(公告)号：US20130325408A1

公开(公告)日：2013-12-05

申请号：US13980551

申请日：2012-01-27

申请人： Yi-Qiao Song

发明人： Yi-Qiao Song

IPC分类号： G01R33/54

CPC分类号： G01R33/54 ,  G01N24/081 ,  G01R33/448 ,  G01R33/56341

摘要： Processing nuclear magnetic resonance data to obtain information regarding material properties is described. This processing can include, for example, compression techniques that can be implemented to lower the required operating memory. In some embodiments, a compression technique can be chosen based on the available operating memory of the computer system. By doing so, an efficient compression algorithm can be selected. In some embodiments, a Lanczos bidiagonalization algorithm, for example, an IRLBA algorithm, can be used for data compression.

摘要翻译： 描述处理核磁共振数据以获得关于材料特性的信息。 该处理可以包括例如可以被实现以降低所需操作存储器的压缩技术。 在一些实施例中，可以基于计算机系统的可用操作存储器来选择压缩技术。 通过这样做，可以选择有效的压缩算法。 在一些实施例中，可以使用Lanczos双对角化算法，例如IRLBA算法来进行数据压缩。

公开(公告)号：US07852077B2

公开(公告)日：2010-12-14

申请号：US12576307

申请日：2009-10-09

申请人： Yi-Qiao Song ,  Nicolas Caudal ,  Martin Hürlimann ,  Eric E. Sigmund

发明人： Yi-Qiao Song ,  Nicolas Caudal ,  Martin Hürlimann ,  Eric E. Sigmund

IPC分类号： G01V3/00

CPC分类号： G01R33/5617 ,  G01N24/081 ,  G01R33/445 ,  G01R33/448 ,  G01R33/56341

摘要： Methods and pulse sequences for facilitating nuclear magnetic resonance (NMR) measurements in grossly inhomogeneous fields. Methods and pulse sequences according to the invention may be used to accurately measure variables such as transverse relaxation time, longitudinal relaxation time, and diffusion, without the need for data at long recovery time, thereby allowing for faster measurements. In addition, methods and pulse sequences according to embodiment of the invention may allow simultaneous encoding of information in both the amplitude and the shape of echoes, so as to allow a single-shot measurement of multiple variables, e.g., both transverse relaxation time (from the decay of echo amplitudes) and longitudinal relaxation time (from the echo shape). CPMG detection may be used to overcome the often limited signal-to-noise ratio in grossly inhomogeneous fields.

摘要翻译： 用于促进在非常不均匀的场中进行核磁共振（NMR）测量的方法和脉冲序列。 根据本发明的方法和脉冲序列可以用于精确地测量诸如横向弛豫时间，纵向松弛时间和扩散的变量，而不需要在长恢复时间的数据，从而允许更快的测量。 此外，根据本发明的实施例的方法和脉冲序列可以允许在回波的幅度和形状两者中同时编码信息，以允许单次测量多个变量，例如横向弛豫时间（从 回波幅度的衰减）和纵向弛豫时间（从回波形状）。 可以使用CPMG检测来克服在非常不均匀场中经常受限的信噪比。

公开(公告)号：US07683615B2

公开(公告)日：2010-03-23

申请号：US11613592

申请日：2006-12-20

申请人： Yi-Qiao Song

发明人： Yi-Qiao Song

IPC分类号： G01V3/00

CPC分类号： G01V3/14 ,  G01N24/08 ,  G01N24/081 ,  G01R33/46 ,  G01R33/485

摘要： A method and apparatus for improving spectral resolution of an NMR measurement in the presence of an inhomogeneous magnetic field. According to one embodiment, a method producing a high resolution nuclear magnetic resonance (NMR) spectrum for a sample in an inhomogeneous magnetic field may comprise generating a first magnetic pulse and a second magnetic pulse, the first and second magnetic pulses being separated in time by a first time period, during the first time period, generating a gradient pulse, repeating the steps of generating the first and second magnetic pulses and generating the gradient pulse N times for different values of a field strength of the gradient pulse, wherein N is an integer greater than one, after each second magnetic pulse, acquiring a signal from the sample, and producing a reconstructed high resolution NMR spectrum from the acquired signals.

摘要翻译： 一种用于在存在不均匀磁场的情况下提高NMR测量的光谱分辨率的方法和装置。 根据一个实施例，在不均匀磁场中产生用于样品的高分辨率核磁共振（NMR）光谱的方法可以包括产生第一磁脉冲和第二磁脉冲，第一和第二磁脉冲在时间上由 在第一时间周期期间，产生梯度脉冲，重复产生第一和第二磁脉冲的步骤，并且对梯度脉冲的场强的不同值产生梯度脉冲N次，其中N是 在每个第二磁脉冲之后，从样本获取信号，并从所获取的信号产生重建的高分辨率NMR光谱。

公开(公告)号：US20070238969A1

公开(公告)日：2007-10-11

申请号：US11478033

申请日：2006-06-29

申请人： Yi-Qiao Song ,  Eric E. Sigmund ,  HyungJoon Cho

发明人： Yi-Qiao Song ,  Eric E. Sigmund ,  HyungJoon Cho

IPC分类号： A61B5/05

CPC分类号： A61B5/4509 ,  A61B5/055 ,  A61B5/4504 ,  G01R33/5617 ,  G01R33/56341

摘要： A method of in vitro or in vivo nuclear magnetic resonance and/or magnetic resonance imaging, to determine bone properties by measuring the effects of molecular diffusion inside the bone specimen to derive parameters that are related to the structure of the trabecular bones. The method is a non-invasive probe that provides topological information on trabecular bone without requiring a full high-resolution image of its structure, and is compatible with clinical use.

摘要翻译： 体外或体内核磁共振和/或磁共振成像的方法，通过测量骨样本内的分子扩散的影响来确定与骨小梁骨结构相关的参数来测定骨性质。 该方法是一种非侵入式探针，可在骨小梁上提供拓扑学信息，无需其结构完整的高分辨率图像，与临床使用相兼容。

公开(公告)号：US09176081B2

公开(公告)日：2015-11-03

申请号：US13097404

申请日：2011-04-29

申请人： Pabitra N. Sen ,  Gabriela Leu ,  Nicholas Drenzek ,  Thomas J. Neville ,  Yi-Qiao Song ,  Ravinath Kausik Kadayam Viswanathan

发明人： Pabitra N. Sen ,  Gabriela Leu ,  Nicholas Drenzek ,  Thomas J. Neville ,  Yi-Qiao Song ,  Ravinath Kausik Kadayam Viswanathan

IPC分类号： E21B47/00 ,  E21B31/06 ,  G01N24/08

CPC分类号： G01N24/081

摘要： Systems and methods for magic angle spinning nuclear magnetic resonance analysis of samples from unconventional reservoirs are described. Fast and inexpensive methods are described that can provide reliable information on TOC content, type, and maturity (via the relative abundances of different hydrocarbons, for example) without the need for more extensive sample preparation or destruction. If care is taken during sample recovery and storage, NMR can also yield an estimate of gas-in-place, including detailed typing (e.g. methane vs. ethane). The described MAS NMR analysis is used to determine various properties of unconventional reservoirs, including gas and oil shales, which are useful in evaluating their worth and producibility.

摘要翻译： 描述了来自非常规储层的样品的魔角旋转核磁共振分析的系统和方法。 描述了可以提供关于TOC含量，类型和成熟度的可靠信息（通过例如不同碳氢化合物的相对丰度）而不需要更广泛的样品制备或破坏的快速和便宜的方法。 如果在样品回收和储存过程中要小心，NMR也可以产生现场气体的估计，包括详细分类（如甲烷对乙烷）。 描述的MAS NMR分析用于确定非常规储层的各种性质，包括气体和油页岩，可用于评估其价值和可生产性。