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    SWITCHED GRADIENT FIELD MEASUREMENT TECHNIQUES FOR SURFACE NMR
    1.
    发明申请
    SWITCHED GRADIENT FIELD MEASUREMENT TECHNIQUES FOR SURFACE NMR 有权

    公开(公告)号：US20230132047A1

    公开(公告)日：2023-04-27

    申请号：US18047969

    申请日：2022-10-19

    申请人： Vista Clara Inc.

    发明人： David Walsh ,  Elliot Grunewald ,  Darya Morozov

    IPC分类号： G01V3/14

    摘要： Switched gradient field measurement techniques for SNMR are disclosed, as well as hardware and software that implements the disclosed techniques. The disclosed techniques allow directly imaging groundwater and hydrogeologic parameters at high resolution in the near subsurface. The resulting technology redefines practical capabilities for hydrogeologic imaging and shallow groundwater mapping, ultimately improving our ability understand, manage, and respond to critical zone processes.

    Relaxation time estimation in surface NMR
    2.
    发明授权
    Relaxation time estimation in surface NMR 有权

    公开(公告)号：US10585204B2

    公开(公告)日：2020-03-10

    申请号：US15042932

    申请日：2016-02-12

    申请人： VISTA CLARA INC.

    发明人： Elliot D. Grunewald ,  David O. Walsh

    IPC分类号： G01V3/14 ,  G01N24/08 ,  G01R33/44 ,  G01R33/341

    摘要： Technologies including NMR relaxation time estimation methods and corresponding apparatus are disclosed. Example techniques may include performing at least one single-pulse acquisition sequence, the single-pulse acquisition sequence comprising transmitting a single modulated pulse with a surface coil, wherein the phase, frequency, or amplitude of the single modulated pulse is varied during the single modulated pulse, and wherein the single modulated pulse excites a transverse magnetization component within a subsurface fluid. The resulting NMR signal may be recorded on at least one receiving device, including recording the NMR signal associated with the transverse magnetization component excited by the single modulated pulse. Processing techniques may be applied in which recorded NMR response data are used to estimate NMR properties and the relaxation times T1 and T2* as a function of position as well as one-dimensional and two-dimension distributions of T1 versus T2* as a function of subsurface position.

    NMR measurement of engineered flow management structures
    3.
    发明授权
    NMR measurement of engineered flow management structures 有权
    工程流程管理结构的NMR测量

    公开(公告)号：US09348054B2

    公开(公告)日：2016-05-24

    申请号：US13541706

    申请日：2012-07-04

    申请人： David O. Walsh ,  Elliot D. Grunewald

    发明人： David O. Walsh ,  Elliot D. Grunewald

    IPC分类号： G01V3/00 ,  G01V3/14 ,  G01R33/563 ,  G01V3/32

    CPC分类号： G01V3/14 ,  G01R33/563 ,  G01V3/32

    摘要： Nuclear Magnetic Resonance (NMR) measurement apparatus, NMR sensors, NMR measurement methods are disclosed to determine NMR properties of engineered flow management structures, and to estimate engineering properties using determined NMR properties. Example engineered flow management structures include engineered water storage, water management, water production, water sampling structures, and/or structures that serve as conduits or barriers to water movement. Technologies disclosed herein are also applicable to measuring properties relating to other fluid and/or gas flow in engineered flow management structures.

    摘要翻译： 公开核磁共振（NMR）测量装置，NMR传感器，NMR测量方法以确定工程流程管理结构的NMR性质，并使用确定的NMR性质估计工程性质。 示例性的工程流程管理结构包括设计水储存，水管理，水生产，水采样结构和/或用作水运动的导管或障碍物的结构。 本文公开的技术也适用于在工程流程管理结构中测量与其它流体和/或气流有关的性质。

    SURFACE-BASED NMR MEASUREMENT
    4.
    发明申请
    SURFACE-BASED NMR MEASUREMENT 审中-公开
    基于表面的NMR测量

    公开(公告)号：US20140084927A1

    公开(公告)日：2014-03-27

    申请号：US14034110

    申请日：2013-09-23

    申请人： Vista Clara Inc.

    发明人： DAVID O. WALSH ,  ELLIOT D. GRUNEWALD ,  HONG ZHANG

    IPC分类号： G01V3/14

    CPC分类号： G01V3/14 ,  G01N24/081 ,  G01R33/3808

    摘要： Technologies applicable to surface-based NMR measurement are disclosed. A surface probe is positionable at or above a surface of the Earth and adapted to make NMR measurements of shallow or very shallow subsurface volumes. NMR spectrometer components connected to the surface probe are configured to control electromagnetic pulses produced by the surface probe and to record resulting detected NMR signals from the subsurface volume.

    摘要翻译： 公开了适用于表面NMR测量技术。 表面探针位于地球表面或其上方，适于对浅层或非常浅的地下体积进行NMR测量。 连接到表面探针的NMR光谱仪组件被配置为控制由表面探针产生的电磁脉冲并记录从地下体积得到的检测到的NMR信号。

    NMR LOGGING APPARATUS
    5.
    发明申请
    NMR LOGGING APPARATUS 审中-公开

    公开(公告)号：US20140084915A1

    公开(公告)日：2014-03-27

    申请号：US14054361

    申请日：2013-10-15

    申请人： DAVID O. WALSH ,  PETER TURNER

    发明人： DAVID O. WALSH ,  PETER TURNER

    IPC分类号： G01V3/32

    CPC分类号： G01N24/08 ,  G01N24/081 ,  G01R33/341 ,  G01R33/3628 ,  G01R33/3808 ,  G01V3/32

    摘要： Technologies including NMR logging apparatus and methods are disclosed. Example NMR logging apparatus may include surface instrumentation and one or more downhole probes configured to fit within an earth borehole. The surface instrumentation may comprise a power amplifier, which may be coupled to the downhole probes via one or more transmission lines, and a controller configured to cause the power amplifier to generate a NMR activating pulse or sequence of pulses. Impedance matching means may be configured to match an output impedance of the power amplifier through a transmission line to a load impedance of a downhole probe. Methods may include deploying the various elements of disclosed NMR logging apparatus and using the apparatus to perform NMR measurements.

    摘要翻译： 公开了包括NMR测井装置和方法在内的技术。 实例NMR测井装置可以包括表面仪表和一个或多个配置成装在地球钻孔内的井下探针。 表面仪器可以包括功率放大器，其可以经由一个或多个传输线耦合到井下探针，以及被配置为使功率放大器产生NMR激活脉冲或脉冲序列的控制器。 阻抗匹配装置可以被配置为通过传输线将功率放大器的输出阻抗匹配到井下探针的负载阻抗。 方法可以包括部署所公开的NMR测井装置的各种元件，并使用该装置进行NMR测量。

    NMR LOGGING APPARATUS
    6.
    发明申请
    NMR LOGGING APPARATUS 有权

    公开(公告)号：US20130187647A1

    公开(公告)日：2013-07-25

    申请号：US13356381

    申请日：2012-01-23

    申请人： DAVID O. WALSH ,  PETER TURNER

    发明人： DAVID O. WALSH ,  PETER TURNER

    IPC分类号： G01V3/32

    CPC分类号： G01N24/08 ,  G01N24/081 ,  G01R33/341 ,  G01R33/3628 ,  G01R33/3808 ,  G01V3/32

    摘要： Technologies including NMR logging apparatus and methods are disclosed. Example NMR logging apparatus may include surface instrumentation and one or more downhole probes configured to fit within an earth borehole. The surface instrumentation may comprise a power amplifier, which may be coupled to the downhole probes via one or more transmission lines, and a controller configured to cause the power amplifier to generate a NMR activating pulse or sequence of pulses. Impedance matching means may be configured to match an output impedance of the power amplifier through a transmission line to a load impedance of a downhole probe. Methods may include deploying the various elements of disclosed NMR logging apparatus and using the apparatus to perform NMR measurements.

    摘要翻译： 公开了包括NMR测井装置和方法在内的技术。 实例NMR测井装置可以包括表面仪表和一个或多个配置成装在地球钻孔内的井下探针。 表面仪器可以包括功率放大器，其可以经由一个或多个传输线耦合到井下探针，以及被配置为使功率放大器产生NMR激活脉冲或脉冲序列的控制器。 阻抗匹配装置可以被配置为通过传输线将功率放大器的输出阻抗匹配到井下探针的负载阻抗。 方法可以包括部署所公开的NMR测井装置的各种元件，并使用该装置进行NMR测量。

    SNMR pulse sequencing methods and apparatus
    8.
    发明授权
    SNMR pulse sequencing methods and apparatus 有权

    公开(公告)号：US10145915B2

    公开(公告)日：2018-12-04

    申请号：US14023033

    申请日：2013-09-10

    申请人： VISTA CLARA, INC.

    发明人： David O. Walsh ,  Elliot D. Grunewald

    IPC分类号： G01R33/44 ,  G01R33/46 ,  G01N24/08

    摘要： Technologies applicable to SNMR pulse sequencing are disclosed, including SNMR acquisition apparatus and methods, SNMR processing apparatus and methods, and combinations thereof. SNMR acquisition may include transmitting SNMR pulse sequences according to any of a variety of techniques. SNMR processing may include combining SNMR from a plurality of pulse sequences.

    NMR DETECTION OF WATER AND HYDROCARBONS DURING INDUCED ALTERATION PROCESSES
    10.
    发明申请
    NMR DETECTION OF WATER AND HYDROCARBONS DURING INDUCED ALTERATION PROCESSES 审中-公开
    诱发变形过程中水和碳氢化合物的NMR检测

    公开(公告)号：US20130293228A1

    公开(公告)日：2013-11-07

    申请号：US13874655

    申请日：2013-05-01

    申请人： DAVID O. WALSH ,  ELLIOT D. GRUNEWALD

    发明人： DAVID O. WALSH ,  ELLIOT D. GRUNEWALD

    IPC分类号： G01V3/32

    CPC分类号： G01V3/32

    摘要： Technologies applicable to NMR detection of water and hydrocarbons during induced alteration: processes are disclosed. NMR measurements may be used to monitor properties of subsurface fluids within a subsurface formation. NMR measurement devices may be deployed proximal to or within a subsurface formation that contains hydrocarbons. Multiple NMR measurements may be performed during an induced alteration process applied, to the subsurface formation to determine properties of the subsurface formation or fluid as the induced alteration process progresses. Changes in properties of the subsurface formation or fluid may be determined and may be used to determine efficacy of optimize, or otherwise modify the induced alteration process.

    摘要翻译： 在诱导改变期间适用于水和碳氢化合物的NMR检测的技术：公开了方法。 NMR测量可用于监测地下地层内地下流体的性质。 NMR测量装置可以部署在含有烃的地下地层附近或内部。 可以在施加的诱导改变过程中对地下地层进行多次NMR测量，以确定诱发的变化过程进行时地下地层或流体的性质。 可以确定地下构造或流体的性质的变化，并且可以用于确定优化或以其它方式改变诱导的改变过程的功效。