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    Methods for interpreting NMR data
    3.
    发明授权
    Methods for interpreting NMR data 有权

    公开(公告)号：US10725197B2

    公开(公告)日：2020-07-28

    申请号：US15695727

    申请日：2017-09-05

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Jonathan Mitchell ,  Edmund J. Fordham ,  Lukasz Zielinski ,  Ravinath Kausik Kadayam Viswanathan

    IPC: G01V3/32 ,  G01V3/38 ,  G01N33/24 ,  E21B49/00

    Abstract: Methods for improved interpretation of NMR data acquired from industrial samples by simultaneously detecting more than one resonant nucleus without removing the sample from the sensitive volume of the NMR magnet or radio frequency probe are disclosed. In other aspects, the present disclosure provides methods for robust imaging/analysis of spatial distribution of different fluids (e.g., 1H, 23Na, 19F) within a core or reservoir rock. NMR data may be interpreted in real-time during dynamic processes to enable rapid screening, e.g. of enhanced oil recovery techniques and products and/or to provide improved interpretation of well-logs. Measurements of resonant nuclei other than 1H may be performed in the laboratory or downhole with a NMR logging tool. In other aspects, the present disclosure describes a novel kernel function to extract values for underlying parameters that define relaxation time behavior of a quadrupolar nucleus.

    Determining properties of porous material by NMR
    4.
    发明授权
    Determining properties of porous material by NMR 有权

    公开(公告)号：US10697910B2

    公开(公告)日：2020-06-30

    申请号：US15761157

    申请日：2016-09-14

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Jonathan Mitchell ,  Edmund John Fordham

    IPC: G01N24/08 ,  G01N15/08 ,  G01R33/30

    Abstract: A porous material with liquid in the pores is examined by submerging the material in a bathing liquid, possibly a perfluorocarbon, which is immiscible with the liquid in the pores, is non-wetting towards the material, is immiscible with and differs in density from any liquid on the outside of the material, and does not contain a resonant element found in the bathing liquid. This bathing liquid displaces fluid from the surface of the porous material but not the liquid in the pores. Nuclear magnetic resonance signals from liquid in the pores give a measurement of pore volume. Volume of bathing liquid displaced by the porous material gives the bulk volume and porosity can be derived from these measurements. Sample preparation is minimal and a benchtop spectrometer can be used, making the method practical for examination of drill cuttings from a borehole while drilling.

    System for emulating nuclear magnetic resonance well logging tool diffusion editing measurements on a bench-top nuclear magnetic resonance spectrometer for laboratory-scale rock core analyis
    5.
    发明申请
    System for emulating nuclear magnetic resonance well logging tool diffusion editing measurements on a bench-top nuclear magnetic resonance spectrometer for laboratory-scale rock core analyis 失效
    用于模拟核磁共振测井仪扩散编辑测量的系统用于实验室规模岩心分析的台式核磁共振光谱仪

    公开(公告)号：US20130265055A1

    公开(公告)日：2013-10-10

    申请号：US13802091

    申请日：2013-03-13

    Applicant: Schlumberger Technology Corporation

    Inventor： Jonathan Mitchell ,  Edmund J. Fordham

    IPC: G01R33/48

    CPC classification number: G01R33/48 ,  G01N24/081 ,  G01R33/448 ,  G01V3/32

    Abstract: A laboratory NMR methodology (and corresponding laboratory apparatus) defines a sample volume. The method stores downhole tool data corresponding to a hydrocarbon-bearing sample collected from a given subsurface formation. The downhole tool data includes parameters pertaining to magnetic fields used by a downhole tool during a suite of NMR measurements of the given subsurface formation. The sample is positioned in the sample volume of the laboratory apparatus, which applies a static magnetic field in the sample volume. Furthermore, the laboratory apparatus applies a suite of NMR measurements to the sample volume to thereby determine a property of the sample. The NMR measurements of the suite each include a pulse sequence of oscillating magnetic field in conjunction with a pulsed-mode gradient field. The pulsed-mode gradient field is based on the stored downhole tool data corresponding to the sample. A laboratory NMR methodology for optimizing downhole NMR measurements is also described.

    Abstract translation: 实验室NMR方法（和相应的实验室装置）定义了样品体积。 该方法存储对应于从给定地下地层采集的含烃样品的井下工具数据。 井下工具数据包括与在给定地下地层的一组NMR测量期间由井下工具使用的磁场有关的参数。 样品定位在实验室设备的样品体积中，其在样品体积中施加静态磁场。 此外，实验室装置对样品体积应用一套NMR测量，从而确定样品的性质。 套件的NMR测量值包括与脉冲模式梯度场一起的振荡磁场的脉冲序列。 脉冲模式梯度场基于对应于样本的存储的井下工具数据。 还描述了用于优化井下NMR测量的实验室NMR方法。

    DIGITAL RETORT MEASUREMENT SYSTEMS AND METHODS
    6.
    发明申请
    DIGITAL RETORT MEASUREMENT SYSTEMS AND METHODS 有权

    公开(公告)号：US20220381714A1

    公开(公告)日：2022-12-01

    申请号：US17755094

    申请日：2020-10-22

    Applicant: Schlumberger Technology Corporation

    Inventor： Jonathan Mitchell ,  Colin Stewart ,  Adam Colbourne

    IPC: G01N24/08 ,  G01N33/28 ,  G01R33/44

    Abstract: Tools and methods are used to determine the oil, water, and solids volume fractions in a drilling fluid at the rig site. The volume fractions can be determined in-line with returned drilling fluid by using an NMR magnet and a flow line or sample chamber that receives a fluid sample and loads it into the NMR magnet. Using an RF probe, spectrometer, and computing device, data processing and interpretation of NMR data from the spectrometer is performed, while also raising a flag when iron contamination exceeds a predefined threshold.

    Magnetic resonance examination of porous samples
    7.
    发明授权
    Magnetic resonance examination of porous samples 有权
    多孔样品的磁共振检查

    公开(公告)号：US09551769B2

    公开(公告)日：2017-01-24

    申请号：US13971515

    申请日：2013-08-20

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Edmund J. Fordham ,  Jonathan Mitchell

    IPC: G01R33/48 ,  G01N24/08 ,  G01R33/50 ,  G01R33/563

    CPC classification number: G01R33/4818 ,  G01N24/081 ,  G01R33/50 ,  G01R33/56341

    Abstract: A method of analyzing properties of a porous sample, typically a cylinder of porous rock, comprises centrifuging the sample while it contains at least one liquid, determining the distribution of at least one liquid in the sample by magnetic resonance imaging of the sample, and also determining the distribution of at least one magnetic resonance parameter, where the parameter is one of longitudinal relaxation time T1, transverse relaxation time T2 and diffusion coefficient D. Pore throat sizes can be determined from the distribution of at least one liquid in the sample and pore body sizes can be determined from the distribution of the magnetic resonance parameter enabling determination of a relationship between pore throat sizes and pore body sizes in the sample. This can be a relationship between individual values of pore throat size and an average of body sizes of pores having that individual pore throat size.

    Abstract translation: 分析多孔样品（通常是多孔岩石圆柱体）的性质的方法包括在样品中含有至少一种液体时离心样品，通过样品的磁共振成像确定样品中至少一种液体的分布，以及 确定至少一个磁共振参数的分布，其中参数是纵向弛豫时间T1，横向弛豫时间T2和扩散系数D之一。孔喉尺寸可以从样品和孔中的至少一种液体的分布来确定 可以从磁共振参数的分布确定体尺寸，从而能够确定样品中孔喉尺寸和孔体尺寸之间的关系。 这可以是孔喉大小的个体值与具有单个孔喉尺寸的孔的体积平均值之间的关系。

    System for emulating nuclear magnetic resonance well logging tool diffusion editing measurements on a bench-top nuclear magnetic resonance spectrometer for laboratory-scale rock core analysis
    8.
    发明授权
    System for emulating nuclear magnetic resonance well logging tool diffusion editing measurements on a bench-top nuclear magnetic resonance spectrometer for laboratory-scale rock core analysis 失效
    用于模拟核磁共振测井仪扩散编辑测量的系统，用于实验室规模岩心分析的台式核磁共振光谱仪

    公开(公告)号：US08686724B2

    公开(公告)日：2014-04-01

    申请号：US13802091

    申请日：2013-03-13

    Applicant: Schlumberger Technology Corporation

    Inventor： Jonathan Mitchell ,  Edmund J. Fordham

    IPC: G01V3/00 ,  G01V3/18

    CPC classification number: G01R33/48 ,  G01N24/081 ,  G01R33/448 ,  G01V3/32

    Abstract: A laboratory NMR methodology (and corresponding laboratory apparatus) defines a sample volume. The method stores downhole tool data corresponding to a hydrocarbon-bearing sample collected from a given subsurface formation. The downhole tool data includes parameters pertaining to magnetic fields used by a downhole tool during a suite of NMR measurements of the given subsurface formation. The sample is positioned in the sample volume of the laboratory apparatus, which applies a static magnetic field in the sample volume. Furthermore, the laboratory apparatus applies a suite of NMR measurements to the sample volume to thereby determine a property of the sample. The NMR measurements of the suite each include a pulse sequence of oscillating magnetic field in conjunction with a pulsed-mode gradient field. The pulsed-mode gradient field is based on the stored downhole tool data corresponding to the sample. A laboratory NMR methodology for optimizing downhole NMR measurements is also described.

    Abstract translation: 实验室NMR方法（和相应的实验室装置）定义了样品体积。 该方法存储对应于从给定地下地层采集的含烃样品的井下工具数据。 井下工具数据包括与在给定地下地层的一组NMR测量期间由井下工具使用的磁场有关的参数。 样品定位在实验室设备的样品体积中，其在样品体积中施加静态磁场。 此外，实验室装置对样品体积应用一套NMR测量，从而确定样品的性质。 套件的NMR测量值包括与脉冲模式梯度场一起的振荡磁场的脉冲序列。 脉冲模式梯度场基于对应于样本的存储的井下工具数据。 还描述了用于优化井下NMR测量的实验室NMR方法。

    METHODS FOR INTERPRETING NMR DATA
    10.
    发明申请
    METHODS FOR INTERPRETING NMR DATA 审中-公开

    公开(公告)号：US20180203153A1

    公开(公告)日：2018-07-19

    申请号：US15695727

    申请日：2017-09-05

    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

    Inventor： Jonathan Mitchell ,  Edmund J. Fordham ,  Lukasz Zielinski ,  Ravinath Kausik Kadayam Viswanathan

    IPC: G01V3/32 ,  G01V3/38

    Abstract: Methods for improved interpretation of NMR data acquired from industrial samples by simultaneously detecting more than one resonant nucleus without removing the sample from the sensitive volume of the NMR magnet or radio frequency probe are disclosed. In other aspects, the present disclosure provides methods for robust imaging/analysis of spatial distribution of different fluids (e.g., 1H, 23Na, 19F) within a core or reservoir rock. NMR data may be interpreted in real-time during dynamic processes to enable rapid screening, e.g. of enhanced oil recovery techniques and products and/or to provide improved interpretation of well-logs. Measurements of resonant nuclei other than 1H may be performed in the laboratory or downhole with a NMR logging tool. In other aspects, the present disclosure describes a novel kernel function to extract values for underlying parameters that define relaxation time behavior of a quadrupolar nucleus.

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