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    Method for improving the accuracy of NMR relaxation distribution analysis with two echo trains
    31.
    发明授权
    Method for improving the accuracy of NMR relaxation distribution analysis with two echo trains 失效
    用两个回波列提高NMR弛豫分布分析精度的方法

    公开(公告)号：US6069477A

    公开(公告)日：2000-05-30

    申请号：US994497

    申请日：1997-12-19

    申请人： Songhua Chen ,  Daniel T. Georgi

    发明人： Songhua Chen ,  Daniel T. Georgi

    IPC分类号： G01R33/44 ,  G01V3/32 ,  G01V3/00

    CPC分类号： G01V3/32 ,  G01N24/081

    摘要： The total porosity of a subterranean formation is calculated by summing the effective Porosity and the clay bound water (CBW) porosity. With the invention described in this patent, the distortion effects of clay bound water (CBW) porosity on the measurement of total porosity is filtered out. The effects will be more significant in slialy sand where the CBW porosity component of total porosity is abundant. The correct NMR transverse relaxation time (T.sub.2) spectra distribution is essential to a determination of capillary bound fluid (BVI) partial porosity and the Spectral Bulk Volume Irreducible (SBVI) model. The same data correction concept can be applied to make a meaningful comparison of well logs or laboratory core NMR data that are obtained with different interecho time (TE) sampling periods.

    摘要翻译： 通过将有效孔隙度和粘土结合水（CBW）孔隙度相加来计算地层的总孔隙率。 利用该专利中描述的发明，滤除粘土结合水（CBW）孔隙度对总孔隙度测量的变形效应。 这种效应在总孔隙度的CBW孔隙度分量丰富的泥沙中更为显着。 正确的NMR横向弛豫时间（T2）光谱分布对于确定毛细血管结合流体（BVI）部分孔隙度和光谱体积不可约（SBVI）模型是必不可少的。 可以应用相同的数据校正概念，以便对不同间隔时间（TE）采样周期获得的测井数据或实验室核心NMR数据进行有意义的比较。

    Nuclear magnetic resonance logging tool having multiple pad-mounted atomic magnetometers
    32.
    发明授权
    Nuclear magnetic resonance logging tool having multiple pad-mounted atomic magnetometers 有权
    核磁共振测井仪具有多个焊盘安装的原子磁强计

    公开(公告)号：US09575204B2

    公开(公告)日：2017-02-21

    申请号：US14377813

    申请日：2012-02-08

    申请人： Songhua Chen ,  Ron Charles Balliet

    发明人： Songhua Chen ,  Ron Charles Balliet

    IPC分类号： G01V3/00 ,  G01V3/32 ,  E21B17/10 ,  G01R33/483 ,  G01R33/26

    CPC分类号： G01V3/32 ,  E21B17/1021 ,  G01R33/26 ,  G01R33/4831

    摘要： Various disclosed nuclear magnetic resonance (NMR) logging systems and methods employ a plurality of NMR sensors, including atomic magnetometers, mounted on pads. Certain method embodiments include: utilizing the Earth magnetic field to pre-polarize the protons in a formation; utilizing a plurality of atomic magnetometers to obtain NMR measurements; and determining at least one characteristic relaxation time of the formation. The NMR sensor may optionally include a permanent magnet assembly.

    摘要翻译： 各种公开的核磁共振（NMR）测井系统和方法使用安装在焊盘上的多个NMR传感器，包括原子磁强计。 某些方法实施例包括：利用地球磁场对地层中的质子进行预极化; 利用多个原子磁强计获得NMR测量; 以及确定所述地层的至少一个特征弛豫时间。 NMR传感器可以可选地包括永磁体组件。

    Formation evaluation capability from near-wellbore logging using relative permeability modifiers
    33.
    发明授权
    Formation evaluation capability from near-wellbore logging using relative permeability modifiers 有权
    使用相对渗透率改性剂近井测井的地层评估能力

    公开(公告)号：US08692547B2

    公开(公告)日：2014-04-08

    申请号：US13231358

    申请日：2011-09-13

    申请人： Songhua Chen ,  Tianping Huang

    发明人： Songhua Chen ,  Tianping Huang

    IPC分类号： G01V3/00

    CPC分类号： G01V3/32

    摘要： Nano-particles that possess either selective fluid phase blocks or modify the relative permeability of an earth formation to different fluids are used to inhibit the invasion of borehole mud into the formation. This makes it possible to make formation evaluation measurements using sensors with a shallow depth of investigation.

    摘要翻译： 使用具有选择性流体相阻挡或改变地层对不同流体的相对渗透率的纳米颗粒来抑制钻井泥浆侵入地层。 这使得可以使用具有浅探测深度的传感器进行地层评估测量。

    Predicting Downhole Formation Volumetric Sand Production Using Grain-Scale Rock Models
    34.
    发明申请
    Predicting Downhole Formation Volumetric Sand Production Using Grain-Scale Rock Models 审中-公开
    使用粒度岩石模型预测井下形成体积砂生产

    公开(公告)号：US20120095741A1

    公开(公告)日：2012-04-19

    申请号：US13272602

    申请日：2011-10-13

    申请人： Guodong Jin ,  Songhua Chen ,  Jiansheng Chen

    发明人： Guodong Jin ,  Songhua Chen ,  Jiansheng Chen

    IPC分类号： G06G7/48

    CPC分类号： E21B43/025 ,  G06F17/5009 ,  G06F2217/16

    摘要： A method, apparatus and computer-readable medium for estimating sand production from an earth formation is disclosed. A grain-scale formation model of the earth formation is created, wherein a value obtained from the grain-scale formation model compares to a value of a measured property of the earth formation. A fluid parameter of the grain-scale formation model is determined and a movement of at least one grain of the grain-scale formation model is determined due to the determined fluid parameter. The sand production is estimated from the determined movement of the at least one grain.

    摘要翻译： 公开了一种用于从地层估计砂产量的方法，装置和计算机可读介质。 产生地层的粒度形成模型，其中从粒度形成模型获得的值与测量的地层的性质的值相比较。 确定晶粒尺度形成模型的流体参数，并且由于所确定的流体参数确定晶粒尺度形成模型的至少一个晶粒的移动。 根据确定的至少一个谷物的运动估计产沙量。

    Method and Apparatus for Predicting Petrophysical Properties From NMR Data in Carbonate Rocks
    35.
    发明申请
    Method and Apparatus for Predicting Petrophysical Properties From NMR Data in Carbonate Rocks 有权
    碳酸盐岩中NMR数据预测岩石物理性质的方法与装置

    公开(公告)号：US20120065888A1

    公开(公告)日：2012-03-15

    申请号：US13232416

    申请日：2011-09-14

    申请人： Jianghui Wu ,  Songhua Chen ,  Bo Gao

    发明人： Jianghui Wu ,  Songhua Chen ,  Bo Gao

    IPC分类号： G06F19/00 ,  G01V3/32

    CPC分类号： G01V3/32

    摘要： An apparatus and method for determining a property of an earth formation using a radial basis function derived from a catalog of rock samples. Parameters of a Thomeer capillary pressure fitting curve are derived and used for analyzing rocks with unimodal or multimodal pore size distributions.

    摘要翻译： 使用从岩石样本目录导出的径向基函数来确定地层的性质的装置和方法。 导出Thomeer毛细管压力拟合曲线的参数，用于分析单峰或多峰孔径分布的岩石。

    DATA ACQUISITION AND PROCESSING FOR INVASION PROFILE AND GAS ZONE ANALYSIS WITH NMR DUAL OR MULTIPLE INTERECHO SPACING TIME LOGS
    36.
    发明申请
    DATA ACQUISITION AND PROCESSING FOR INVASION PROFILE AND GAS ZONE ANALYSIS WITH NMR DUAL OR MULTIPLE INTERECHO SPACING TIME LOGS 有权
    数据采集​​和处理入侵轮廓和气体分析与NMR双或多个INTERECHO间隔时间日志

    公开(公告)号：US20100088033A1

    公开(公告)日：2010-04-08

    申请号：US12245121

    申请日：2008-10-03

    申请人： Songhua Chen ,  Wei Shao

    发明人： Songhua Chen ,  Wei Shao

    IPC分类号： G01V3/08 ,  G01V3/26 ,  G06F19/00

    CPC分类号： G01V3/32 ,  G01N24/081 ,  G01R33/50

    摘要： A method for obtaining a parameter of interest related to an earth formation, the method including: obtaining nuclear magnetic resonance (NMR) data from an NMR tool investigating the earth formation with a plurality of pulse sequences of radio frequency energy, each pulse sequence having a unique frequency, a first train of pulses having a first interecho time (TE1) and a second train of pulses having a second interecho time (TE2) different from the first interecho time; relating the NMR data to a partial porosity at points to establish an NMR response model; solving the NMR response model to calculate the partial porosity at each of the points in the earth formation; summing the partial porosity for each of the points corresponding to each depth of investigation to provide a pore volume; and associating each pore volume with the corresponding depth of investigation to provide the parameter of interest.

    摘要翻译： 一种用于获得与地球相关的感兴趣参数的方法，所述方法包括：利用多个射频能量的脉冲序列从研究地层的NMR工具获得核磁共振（NMR）数据，每个脉冲序列具有 唯一频率，具有第一相互作用时间（TE1）和第二脉冲序列的第一脉冲序列具有不同于第一相互间隔时间的第二相互作用时间（TE2）; 将NMR数据与点处的部分孔隙度相关联，以建立NMR响应模型; 解决NMR响应模型，计算地层中每个点的部分孔隙度; 将与每个调查深度相对应的每个点的部分孔隙率相加以提供孔体积; 并将每个孔体积与相应的调查深度相关联以提供感兴趣的参数。

    Determination of gas saturation radial profile from multi-frequency NMR data
    37.
    发明授权
    Determination of gas saturation radial profile from multi-frequency NMR data 有权
    从多频率NMR数据确定气体饱和径向剖面

    公开(公告)号：US07565246B2

    公开(公告)日：2009-07-21

    申请号：US11689887

    申请日：2007-03-22

    申请人： Sheng Fang ,  Songhua Chen

    发明人： Sheng Fang ,  Songhua Chen

    IPC分类号： G01V5/04

    CPC分类号： G01R33/5615 ,  G01N24/081 ,  G01R33/448 ,  G01V3/32

    摘要： A method for determining fluid saturation in a formation at a plurality of radial depths near a wellbore, the method including: obtaining multi-frequency nuclear magnetic resonance (NMR) response data for the formation; and processing the data to determine simultaneously the fluid saturation at each radial depth. A computer program product is provided.

    摘要翻译： 一种用于确定井眼附近的多个径向深度处的地层中的流体饱和度的方法，所述方法包括：获得用于地层的多频核磁共振（NMR）响应数据; 并处理数据以同时确定每个径向深度处的流体饱和度。 提供计算机程序产品。

    METHOD OF DISCERNING WATER FROM HYDROCARBON FLUIDS USING DOWNHOLE NMR INSTRUMENTS IN PETROLEUM RESERVOIRS WITH FORMATION BRINE
    38.
    发明申请
    METHOD OF DISCERNING WATER FROM HYDROCARBON FLUIDS USING DOWNHOLE NMR INSTRUMENTS IN PETROLEUM RESERVOIRS WITH FORMATION BRINE 失效
    在石油储藏库中使用卧式核磁共振仪器从碳氢化合物中分离水的方法

    公开(公告)号：US20090179636A1

    公开(公告)日：2009-07-16

    申请号：US12177246

    申请日：2008-07-22

    申请人： Songhua Chen

    发明人： Songhua Chen

    IPC分类号： G01V3/14

    CPC分类号： G01V3/32 ,  G01N24/081 ,  G01R33/3808 ,  Y02A90/344

    摘要： A method for analytically separating properties of hydrocarbon materials from other materials in a downhole environment, the method including: performing nuclear magnetic resonance (NMR) measurements downhole; determining a signal for sodium-23 (23Na) from the NMR measurements; and associating the 23Na signal with the other materials. A computer program product, an apparatus and additional methods are provided.

    摘要翻译： 一种用于在井下环境中分析烃物质与其他材料的性质的方法，所述方法包括：在井下进行核磁共振（NMR）测量; 从NMR测量确定钠-23（23Na）的信号; 并将23Na信号与其他材料相关联。 提供了一种计算机程序产品，装置和附加方法。

    Pore-scale geometric models for interpretation of downhole formation evaluation data
    40.
    发明授权
    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：US07257490B2

    公开(公告)日：2007-08-14

    申请号：US11147063

    申请日：2005-06-03

    申请人： Daniel T. Georgi ,  Songhua Chen ,  David Jacobi

    发明人： Daniel T. Georgi ,  Songhua Chen ,  David Jacobi

    IPC分类号： G01V11/00

    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。