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    Combined characterization and inversion of reservoir parameters from nuclear, NMR and resistivity measurements
    2.
    发明授权
    Combined characterization and inversion of reservoir parameters from nuclear, NMR and resistivity measurements 失效
    从核，核磁共振和电阻率测量结合表征和反演储层参数

    公开(公告)号：US06686736B2

    公开(公告)日：2004-02-03

    申请号：US09928769

    申请日：2001-08-13

    申请人： Juergen S. Schoen ,  Otto N. Fanini ,  Daniel Georgi

    发明人： Juergen S. Schoen ,  Otto N. Fanini ,  Daniel Georgi

    IPC分类号： G01V300

    CPC分类号： G01V3/32 ,  G01V3/38 ,  G01V11/00

    摘要： The distribution of shales, sands and water in a reservoir including laminated shaly sands using vertical and horizontal conductivities is derived from nuclear, NMR, and multi-component induction data. The multicomponent data are inverted and an estimate of the laminated shale volume from this inversion is compared with an estimate of laminated shale volume from nuclear logs. The bulk water volume determined from the inversion is compared with a bulk irreducible water volume from NMR measurements. NMR data are then used to obtain a sand distribution in the reservoir and this sand distribution is used in a second inversion of the multicomponent data. Alternatively, a bulk permeability measurement is used as a constraint in inverting the properties of the anisotropic sand component of the reservoir. From the resistivities of the sand laminae, empirical relations are used to predict anisotropic reservoir properties of the reservoir.

    摘要翻译： 使用垂直和水平电导率的含有层状砂岩的储层中页岩，砂和水的分布来自核，NMR和多组分诱导数据。 将多组分数据反演，并将来自该反演的层压页岩体积的估计与来自核原木的层压页岩体积的估计进行比较。 将从反演确定的体积水体积与NMR测量中的体积不可约水体积进行比较。 然后使用NMR数据来获得储层中的砂分布，并且在多组分数据的第二次反演中使用该砂分布。 或者，体积渗透率测量被用作反转储层的各向异性砂分量的性质的约束。 从砂层的电阻率，经验关系用于预测储层的各向异性储层性质。

    Method of detecting, quantifying and correcting borehole contaminations from multi-frequency, multi-sensitive-volume NMR logging data
    3.
    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。

    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：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。

    Determination of correct horizontal and vertical permeabilities in a deviated well
    5.
    发明申请
    Determination of correct horizontal and vertical permeabilities in a deviated well 有权
    确定偏斜井中正确的水平和垂直渗透率

    公开(公告)号：US20060042372A1

    公开(公告)日：2006-03-02

    申请号：US11202778

    申请日：2005-08-12

    申请人： James Sheng ,  Daniel Georgi

    发明人： James Sheng ,  Daniel Georgi

    IPC分类号： E21B47/10

    CPC分类号： E21B49/008

    摘要： In one method, the permeabilities are obtained by correcting the geometric factor derived from combining the FRA analysis and buildup analysis. In a second method, the permeabilities are obtained by combining the spherical permeability estimated from buildup analysis and the geometric skin factor obtained from history matching the probe-pressure data. In other methods, horizontal and vertical permeabilities are determined by analysis of pressure drawdown made with a single probe of circular aperture in a deviated borehole at two different walls of the borehole.

    摘要翻译： 在一种方法中，通过校正通过组合FRA分析和累积分析得到的几何因子来获得渗透性。 在第二种方法中，通过组合从积累分析估计的球形磁导率和从与探针压力数据匹配的历史获得的几何外观因子来获得渗透性。 在其他方法中，水平和垂直渗透率通过分析在钻孔的两个不同壁处的偏斜钻孔中的圆形孔的单个探针进行的压力下降来确定。

    Use of measurements made in one echo train to correct ringing in second to avoid use of phase alternated pair in the second
    6.
    发明申请
    Use of measurements made in one echo train to correct ringing in second to avoid use of phase alternated pair in the second 有权
    使用在一个回波列车中进行的测量来纠正秒钟振铃，以避免在第二次使用相位交替对

    公开(公告)号：US20050231198A1

    公开(公告)日：2005-10-20

    申请号：US10827183

    申请日：2004-04-19

    申请人： David Beard ,  Daniel Georgi

    发明人： David Beard ,  Daniel Georgi

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

    CPC分类号： G01N24/081 ,  G01V3/32

    摘要： Estimates of ringing produced by short recovery pulse sequences (CPMG or modified CPMG) are used to improve the effects of ringing in a conventional CPMG or modified CPMG sequences. This is an effective method for removal of ringing when the ringing is varying over a time interval that would be spanned by a phase alternated pair of conventional sequences. By use of frequency dithering, ringing due to the excitation pulse and the refocusing pulses can be removed.

    摘要翻译： 使用由短恢复脉冲序列（CPMG或修饰的CPMG）产生的振铃的估计值来改善常规CPMG或修饰的CPMG序列中的振铃效应。 这是一种有效的方法，当振铃在由相位交替的常规序列对跨越的时间间隔上变化时，可以去除振铃。 通过使用频率抖动，可以消除由于激发脉冲和重聚焦脉冲引起的振铃。

    NMR contrast logging
    7.
    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。

    Apparatus and method for evaluating a formation
    9.
    发明申请
    Apparatus and method for evaluating a formation 审中-公开
    用于评估地层的装置和方法

    公开(公告)号：US20070044959A1

    公开(公告)日：2007-03-01

    申请号：US11217185

    申请日：2005-09-01

    申请人： Daniel Georgi

    发明人： Daniel Georgi

    IPC分类号： E21B47/00

    CPC分类号： E21B23/14 ,  E21B49/10

    摘要： An apparatus and method for evaluating a formation is presented. The apparatus comprises a tubular string deployed into a wellbore penetrating the formation, where the tubular string has a longitudinal flow passage therethrough. A flow sub in the tubular string provides fluid communication between the longitudinal flow passage in the tubular string and an annulus between the tubular string and a wall of the wellbore. A wireline tool is attached proximate a bottom end of the flow sub. A telemetry module proximate the flow sub provides communication between the wireline tool and a surface system, without the use of a wireline to the surface.

    摘要翻译： 提出了一种用于评估地层的装置和方法。 该装置包括一部署于穿透地层的井眼中的管状柱体，其中管状柱具有穿过其的纵向流动通道。 管状串中的流动部分提供管状串中的纵向流动通道与管状管柱与井眼的壁之间的环形空间之间的流体连通。 电缆工具靠近流动底部的底端附接。 靠近流动分支的遥测模块提供有线工具和表面系统之间的通信，而不需要使用电缆到表面。

    Pore-scale geometric models for interpretation of downhole formation evaluation data
    10.
    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。