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    Method of detecting, quantifying and correcting borehole contaminations from multi-frequency, multi-sensitive-volume NMR logging data
    1.
    发明授权
    Method of detecting, quantifying and correcting borehole contaminations from multi-frequency, multi-sensitive-volume NMR logging data 有权
    从多频，多灵敏度NMR测井数据中检测，量化和校正钻孔污染的方法

    公开(公告)号：US07227355B2

    公开(公告)日：2007-06-05

    申请号：US10855230

    申请日：2004-05-27

    申请人： Songhua Chen ,  Gigi Zhang ,  Daniel Georgi

    发明人： Songhua Chen ,  Gigi Zhang ,  Daniel Georgi

    IPC分类号： G01V3/00

    CPC分类号： G01V3/32

    摘要： Spin echo signals measured with a multifrequency NMR logging tool are analyzed to determine if one or more of the regions of examination associated with each of the frequencies has signal contamination from borehole fluids. A variety of different methods can be used for analysis. Corrected spin echo signals can be obtained and processed to give improved estimates of formation parameters.

    摘要翻译： 分析用多频NMR测井工具测量的旋转回波信号，以确定与每个频率相关联的检查区域中的一个或多个是否具有来自钻孔液体的信号污染。 可以使用各种不同的方法进行分析。 可以获得并处理校正的自旋回波信号，以提供对地层参数的改进估计。

    Method of detecting, quantifying and correcting borehole contaminations from multi-frequency, multi-sensitive-volume NMR logging data
    2.
    发明申请
    Method of detecting, quantifying and correcting borehole contaminations from multi-frequency, multi-sensitive-volume NMR logging data 有权
    从多频，多灵敏度NMR测井数据中检测，量化和校正钻孔污染的方法

    公开(公告)号：US20050264285A1

    公开(公告)日：2005-12-01

    申请号：US10855230

    申请日：2004-05-27

    申请人： Songhua Chen ,  Gigi Zhang ,  Daniel Georgi

    发明人： Songhua Chen ,  Gigi Zhang ,  Daniel Georgi

    IPC分类号： G01V3/00 ,  G01V3/32

    CPC分类号： G01V3/32

    摘要： Spin echo signals measured with a multifrequency NMR logging tool are analyzed to determine if one or more of the regions of examination associated with each of the frequencies has signal contamination from borehole fluids. A variety of different methods can be used for analysis. Corrected spin echo signals can be obtained and processed to give improved estimates of formation parameters.

    摘要翻译： 分析用多频NMR测井工具测量的旋转回波信号，以确定与每个频率相关联的检查区域中的一个或多个是否具有来自钻孔液体的信号污染。 可以使用各种不同的方法进行分析。 可以获得并处理校正的自旋回波信号，以提供对地层参数的改进估计。

    NMR contrast logging
    3.
    发明授权
    NMR contrast logging 失效
    NMR对比测井

    公开(公告)号：US08610431B2

    公开(公告)日：2013-12-17

    申请号：US13012929

    申请日：2011-01-25

    申请人： Songhua Chen ,  Daniel Georgi

    发明人： Songhua Chen ,  Daniel Georgi

    IPC分类号： G01V3/00

    CPC分类号： G01V3/32

    摘要： An apparatus for estimating a property of an earth formation penetrated by a borehole, the apparatus includes: a carrier configured to be conveyed through the borehole; a nuclear magnetic resonance (NMR) instrument disposed at the carrier and configured to perform an NMR measurement on a volume sensitive to the NMR measurement; and a contrast agent disposed in the volume and comprising particles that form a suspension in a liquid, the suspension of particles being configured increase a magnetic field gradient of at least one earth formation material in the volume to change an NMR relaxation time constant of the at least one earth formation material; wherein the NMR measurement on the volume containing the at least one earth formation material and the contrast agent is used to estimate the property.

    摘要翻译： 一种用于估计由钻孔穿透的地层的性质的装置，所述装置包括：构造成被输送通过所述钻孔的载体; 设置在载体上并被配置为对对NMR测量敏感的体积进行NMR测量的核磁共振（NMR）仪器; 以及设置在体积中并包含在液体中形成悬浮液的颗粒的造影剂，构造的颗粒悬浮液增加体积中的至少一种地球形成材料的磁场梯度，以改变在该体积中的NMR弛豫时间常数 至少一个地层材料; 其中使用包含至少一种地球形成材料和造影剂的体积上的NMR测量来估计该性质。

    Pore-scale geometric models for interpretation of downhole formation evaluation data
    4.
    发明申请
    Pore-scale geometric models for interpretation of downhole formation evaluation data 有权
    用于解释井下地层评估数据的孔隙尺度几何模型

    公开(公告)号：US20060273788A1

    公开(公告)日：2006-12-07

    申请号：US11445023

    申请日：2006-06-01

    申请人： Daniel Georgi ,  Mikhail Gladkikh ,  Songhua Chen

    发明人： Daniel Georgi ,  Mikhail Gladkikh ,  Songhua Chen

    IPC分类号： G01V3/00

    CPC分类号： G01V3/32 ,  G01N24/081

    摘要： The grain size of a pore-scale geometric model of a clastic earth formation are adjusted so that the NMR relaxation time distribution output of the model matches a measured NMR distribution. Fluid drainage and imbibing can be simulated. Additional properties of the earth formation are predicted using the pore-scale model. The additional properties may be based on additional measurements of properties of a fluid in the formation.

    摘要翻译： 调整碎屑土地层的孔隙尺度几何模型的晶粒尺寸，使得模型的NMR弛豫时间分布输出与测量的NMR分布相匹配。 可以模拟流体排水和吸水。 使用孔隙尺度模型预测地层的附加属性。 额外的性质可以基于地层中流体的性质的附加测量。

    Pore-scale geometric models for interpretation of downhole formation evaluation data
    5.
    发明申请
    Pore-scale geometric models for interpretation of downhole formation evaluation data 有权
    用于解释井下地层评估数据的孔隙尺度几何模型

    公开(公告)号：US20060276969A1

    公开(公告)日：2006-12-07

    申请号：US11147063

    申请日：2005-06-03

    申请人： Daniel Georgi ,  Songhua Chen ,  David Jacobi

    发明人： Daniel Georgi ,  Songhua Chen ,  David Jacobi

    IPC分类号： G01V9/00

    CPC分类号： G01V11/00

    摘要： Parameters of a pore-scale geometric model of a clastic earth formation are adjusted so that the output of the model matches measurements made one a core sample. Additional properties of the earth formation are predicted using the pore-scale model. The additional properties may be based on additional measurements of properties of a fluid in the formation.

    摘要翻译： 调整碎屑岩地层的孔隙尺度几何模型的参数，使得模型的输出与测量结果匹配成为一个核心样本。 使用孔隙尺度模型预测地层的附加属性。 额外的性质可以基于地层中流体的性质的附加测量。

    Pore-scale geometric models for interpretation of downhole formation evaluation data
    6.
    发明申请
    Pore-scale geometric models for interpretation of downhole formation evaluation data 有权
    用于解释井下地层评估数据的孔隙尺度几何模型

    公开(公告)号：US20060287201A1

    公开(公告)日：2006-12-21

    申请号：US11146886

    申请日：2005-06-03

    申请人： Daniel Georgi ,  Songhua Chen ,  David Jacobi

    发明人： Daniel Georgi ,  Songhua Chen ,  David Jacobi

    IPC分类号： C09K8/14

    CPC分类号： G01V11/00 ,  G01N24/081 ,  G01V2210/6167

    摘要： Parameters of a pore-scale geometric model of a clastic earth formation are adjusted so that the output of the model matches measurements made on a core sample. Additional properties of the earth formation are predicted using the pore-scale model. The additional properties may be based on additional measurements of properties of a fluid in the formation.

    摘要翻译： 调整碎屑岩地层的孔隙尺度几何模型的参数，使得模型的输出与核心样本上进行的测量相匹配。 使用孔隙尺度模型预测地层的附加属性。 额外的性质可以基于地层中流体的性质的附加测量。

    NMR CONTRAST LOGGING
    7.
    发明申请
    NMR CONTRAST LOGGING 失效
    NMR对比度记录

    公开(公告)号：US20110181278A1

    公开(公告)日：2011-07-28

    申请号：US13012929

    申请日：2011-01-25

    申请人： Songhua Chen ,  Daniel Georgi

    发明人： Songhua Chen ,  Daniel Georgi

    IPC分类号： G01V3/32

    CPC分类号： G01V3/32

    摘要： An apparatus for estimating a property of an earth formation penetrated by a borehole, the apparatus includes: a carrier configured to be conveyed through the borehole; a nuclear magnetic resonance (NMR) instrument disposed at the carrier and configured to perform an NMR measurement on a volume sensitive to the NMR measurement; and a contrast agent disposed in the volume and comprising particles that form a suspension in a liquid, the suspension of particles being configured increase a magnetic field gradient of at least one earth formation material in the volume to change an NMR relaxation time constant of the at least one earth formation material; wherein the NMR measurement on the volume containing the at least one earth formation material and the contrast agent is used to estimate the property.

    摘要翻译： 一种用于估计由钻孔穿透的地层的性质的装置，所述装置包括：构造成被输送通过所述钻孔的载体; 设置在载体上并被配置为对对NMR测量敏感的体积进行NMR测量的核磁共振（NMR）仪器; 以及设置在体积中并包含在液体中形成悬浮液的颗粒的造影剂，构造的颗粒悬浮液增加体积中的至少一种地球形成材料的磁场梯度，以改变在该体积中的NMR弛豫时间常数 至少一个地层材料; 其中使用包含至少一种地球形成材料和造影剂的体积上的NMR测量来估计该性质。

    Pore-Scale Geometric Models for Interpretation of Downhole Formation Evaluation Data
    8.
    发明申请
    Pore-Scale Geometric Models for Interpretation of Downhole Formation Evaluation Data 有权
    井下形成评估数据解释的孔隙几何模型

    公开(公告)号：US20080120034A1

    公开(公告)日：2008-05-22

    申请号：US12017284

    申请日：2008-01-21

    申请人： Daniel Georgi ,  Mikhail Gladkikh ,  Songhua Chen

    发明人： Daniel Georgi ,  Mikhail Gladkikh ,  Songhua Chen

    IPC分类号： G01V3/38

    CPC分类号： G01V3/32 ,  G01N24/081 ,  G01R33/3808 ,  G01R33/448

    摘要： The grain size of a pore-scale geometric model of a clastic earth formation are adjusted so that the NMR relaxation time distribution output of the model matches a measured NMR distribution. Fluid drainage and imbibing can be simulated. Additional properties of the earth formation are predicted using the pore-scale model. The additional properties may be based on additional measurements of properties of a fluid in the formation.

    摘要翻译： 调整碎屑土地层的孔隙尺度几何模型的晶粒尺寸，使得模型的NMR弛豫时间分布输出与测量的NMR分布相匹配。 可以模拟流体排水和吸水。 使用孔隙尺度模型预测地层的附加属性。 额外的性质可以基于地层中流体的性质的附加测量。

    NMR tracking of injected fluids
    9.
    发明授权
    NMR tracking of injected fluids 有权

    公开(公告)号：US09658359B2

    公开(公告)日：2017-05-23

    申请号：US14131815

    申请日：2011-07-12

    申请人： Ron Dirksen ,  Songhua Chen

    发明人： Ron Dirksen ,  Songhua Chen

    IPC分类号： G01V3/00 ,  G01V3/32 ,  E21B43/26 ,  E21B49/00

    CPC分类号： G01V3/32 ,  E21B43/26 ,  E21B49/008

    摘要： Formation testing systems and methods may inject fluids into a formation to initiate fractures and facilitate measurements of various formation properties. In accordance with certain disclosed embodiments, the injection tools are further provided with nuclear magnetic resonance (NMR) sensors to monitor the injected fluids and provide measurements of near-borehole fracture orientations and volumes. Contrast agents and/or magnetic resonance imaging (MRI) techniques may be employed. The fluid injection may occur via an extendible isolation pad, via a fracturing jet, or via an injection port in an isolated region of the borehole. The systems may employ pressure monitoring in conjunction with the NMR sensors to further enhance estimates of formation and fracture properties.

    Method of determining downhole formation grain size distribution using acoustic and NMR logging data
    10.
    发明授权
    Method of determining downhole formation grain size distribution using acoustic and NMR logging data 有权
    使用声学和NMR测井数据确定井下形成粒度分布的方法

    公开(公告)号：US08195399B2

    公开(公告)日：2012-06-05

    申请号：US12053988

    申请日：2008-03-24

    申请人： Mikhail N. Gladkikh ,  Songhua Chen ,  Jiansheng Chen

    发明人： Mikhail N. Gladkikh ,  Songhua Chen ,  Jiansheng Chen

    IPC分类号： G01V1/40 ,  G01V3/38

    CPC分类号： G01V11/00 ,  G01V3/32 ,  G01V5/04

    摘要： The grain size distribution of a pore-scale geometric model of a clastic earth formation are adjusted so that the NMR relaxation time distribution output of the model matches a measured NMR distribution, and an acoustic velocity output of the model matches a measured acoustic velocity (compressional and/or shear). Fluid drainage and imbibing can be simulated. Additional properties of the earth formation are predicted using the pore-scale model. The additional properties may be based on additional measurements of properties of a fluid in the formation.

    摘要翻译： 调整碎屑岩地层的孔隙尺度几何模型的粒度分布，使得模型的NMR弛豫时间分布输出与测量的NMR分布相匹配，并且模型的声速输出与测得的声速匹配（压缩 和/或剪切）。 可以模拟流体排水和吸水。 使用孔隙尺度模型预测地层的附加属性。 额外的性质可以基于地层中流体的性质的附加测量。