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公开(公告)号：US20120092006A1
公开(公告)日：2012-04-19
申请号：US12907707
申请日：2010-10-19
申请人： Lilong Li , Songhua Chen , Carl M. Edwards , Joo Tim Ong
发明人： Lilong Li , Songhua Chen , Carl M. Edwards , Joo Tim Ong
IPC分类号： G01R33/44
CPC分类号： G01R33/56308 , G01N24/081 , G01N24/082 , G01R33/445 , G01R33/563 , G01V3/14
摘要： A method and apparatus for estimating a flow rate of a phase of a multiphase fluid is disclosed. A first velocity distribution is obtained for a first set of nuclei in the fluid from a Nuclear Magnetic Resonance (NMR) signal received for the fluid in response to a first NMR excitation signal. A second velocity distribution is obtained for a second set of nuclei in the fluid from an NMR signal received for the fluid in response to a second NMR excitation signal. A velocity of the phase is estimated from the first velocity distribution and the second velocity distribution. The flow rate of the phase is estimated using the estimated velocity of the phase and an estimated volume fraction of the phase.
摘要翻译： 公开了一种用于估计多相流体的相的流量的方法和装置。 对于针对第一个NMR激发信号的流体接收的核磁共振（NMR）信号，对于流体中的第一组核获得第一速度分布。 从针对第二次NMR激发信号的流体接收到的NMR信号，获得流体中第二组核的第二速度分布。 从第一速度分布和第二速度分布估计相位的速度。 使用相的估计速度和相的估计体积分数来估计相的流速。
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2.发明授权Nuclear magnetic resonance 1H and 13C multiphase flow measurements, estimating phase selected flow rates from velocity distributions, volume fractions, and mean velocity 有权核磁共振1H和13C多相流测量，从速度分布，体积分数和平均速度估计相选择的流速公开(公告)号：US08729893B2
公开(公告)日：2014-05-20
申请号：US12907707
申请日：2010-10-19
申请人： Lilong Li , Songhua Chen , Carl M. Edwards , Joo Tim Ong
发明人： Lilong Li , Songhua Chen , Carl M. Edwards , Joo Tim Ong
IPC分类号： G01R33/563 , G01N24/08 , G01V3/14 , G01R33/44
CPC分类号： G01R33/56308 , G01N24/081 , G01N24/082 , G01R33/445 , G01R33/563 , G01V3/14
摘要： A method and apparatus for estimating a flow rate of a phase of a multiphase fluid is disclosed. A first velocity distribution is obtained for a first set of nuclei in the fluid from a Nuclear Magnetic Resonance (NMR) signal received for the fluid in response to a first NMR excitation signal. A second velocity distribution is obtained for a second set of nuclei in the fluid from an NMR signal received for the fluid in response to a second NMR excitation signal. A velocity of the phase is estimated from the first velocity distribution and the second velocity distribution. The flow rate of the phase is estimated using the estimated velocity of the phase and an estimated volume fraction of the phase.
摘要翻译： 公开了一种用于估计多相流体的相的流量的方法和装置。 对于针对第一个NMR激发信号的流体接收的核磁共振（NMR）信号，对于流体中的第一组核获得第一速度分布。 从针对第二次NMR激发信号的流体接收到的NMR信号，获得流体中第二组核的第二速度分布。 从第一速度分布和第二速度分布估计相位的速度。 使用相的估计速度和相的估计体积分数来估计相的流速。
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公开(公告)号：US08633689B2
公开(公告)日：2014-01-21
申请号：US12971740
申请日：2010-12-17
申请人： Lilong Li , Songhua Chen , Carl M. Edwards
发明人： Lilong Li , Songhua Chen , Carl M. Edwards
IPC分类号： G01V3/00
CPC分类号： G01N24/081 , G01F1/716 , G01F1/74 , G01N24/082 , G01R33/445
摘要： A method and apparatus for estimating a flow rate of a phase of a multiphase fluid is disclosed. In the first method, nuclei in the fluid are polarized over two distances and a measured magnetization gives the relative fraction of two components of the fluid for a selected velocity. In the second method, nuclei in the fluid are polarized over a specified distance and measurements of the decay of spin echo signals is used to give the relative fraction of two components of the fluid for the selected velocity.
摘要翻译： 公开了一种用于估计多相流体的相的流量的方法和装置。 在第一种方法中，流体中的核在两个距离上被极化，并且测量的磁化给出了所选流速的流体的两个分量的相对分数。 在第二种方法中，流体中的核在一定距离上被极化，并且使用自旋回波信号衰减的测量值来给出所选速度的流体的两个分量的相对分数。
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公开(公告)号：US20120092007A1
公开(公告)日：2012-04-19
申请号：US12971740
申请日：2010-12-17
申请人： Lilong Li , Songhua Chen , Carl M. Edwards
发明人： Lilong Li , Songhua Chen , Carl M. Edwards
CPC分类号： G01N24/081 , G01F1/716 , G01F1/74 , G01N24/082 , G01R33/445
摘要： A method and apparatus for estimating a flow rate of a phase of a multiphase fluid is disclosed. In the first method, nuclei in the fluid are polarized over two distances and a measured magnetization gives the relative fraction of two components of the fluid for a selected velocity. In the second method, nuclei in the fluid are polarized over a specified distance and measurements of the decay of spin echo signals is used to give the relative fraction of two components of the fluid for the selected velocity.
摘要翻译： 公开了一种用于估计多相流体的相的流量的方法和装置。 在第一种方法中，流体中的核在两个距离上被极化，并且测量的磁化给出了所选流速的流体的两个分量的相对分数。 在第二种方法中，流体中的核在一定距离上被极化，并且使用自旋回波信号衰减的测量值来给出所选速度的流体的两个分量的相对分数。
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5.发明授权Method and apparatus to incorporate internal gradient and restricted diffusion in NMR inversion 有权在NMR反演中引入内部梯度和限制扩散的方法和装置公开(公告)号：US08532929B2
公开(公告)日：2013-09-10
申请号：US12960062
申请日：2010-12-03
申请人： Lilong Li , Songhua Chen
发明人： Lilong Li , Songhua Chen
CPC分类号： G01V3/32
摘要： Pulse sequences are applied to a fluid in an earth formation with an external static magnetic field and NMR spin echo signals are obtained. The received NMR signals are affected by internal field gradients due to a contrast in magnetic susceptibility between the grains of the formation matrix and the fluid in the pore space. Processing of the data gives the relaxation time and diffusivity of the fluid.
摘要翻译： 脉冲序列用外部静磁场施加到地层中的流体，并获得NMR自旋回波信号。 由于形成基质的晶粒与孔隙空间中的流体之间的磁化率的对比，所接收的NMR信号受内部场梯度的影响。 数据的处理给出了流体的松弛时间和扩散系数。
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6.发明申请Method and Apparatus to Incorporate Internal Gradient and Restricted Diffusion in NMR Inversion 有权在NMR反转中引入内部梯度和限制扩散的方法和装置公开(公告)号：US20110137567A1
公开(公告)日：2011-06-09
申请号：US12960062
申请日：2010-12-03
申请人： Lilong Li , Songhua Chen
发明人： Lilong Li , Songhua Chen
CPC分类号： G01V3/32
摘要： Pulse sequences are applied to a fluid in an earth formation with an external static magnetic field and NMR spin echo signals are obtained. The received NMR signals are affected by internal field gradients due to a contrast in magnetic susceptibility between the grains of the formation matrix and the fluid in the pore space. Processing of the data gives the relaxation time and diffusivity of the fluid.
摘要翻译： 脉冲序列用外部静磁场施加到地层中的流体，并获得NMR自旋回波信号。 由于形成基质的晶粒与孔隙空间中的流体之间的磁化率的对比，所接收的NMR信号受内部场梯度的影响。 数据的处理给出了流体的松弛时间和扩散系数。
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公开(公告)号：US20130261973A1
公开(公告)日：2013-10-03
申请号：US13433570
申请日：2012-03-29
申请人： Lilong Li
发明人： Lilong Li
CPC分类号： G01V3/14 , G01N24/081 , G01V3/32 , G06F19/00
摘要： A method for estimating a property of an earth formation includes: conveying a carrier through a borehole penetrating the earth formation; performing nuclear magnetic resonance (NMR) measurements on a sensitive volume in the formation using an NMR tool disposed at the carrier to provide a distribution of relaxation times; identifying peaks in the distribution of relaxation times; selecting at least one peak based on a characteristic of the at least one peak; and estimating the property using a relaxation time associated with the at least one peak.
摘要翻译： 用于估计地层的性质的方法包括：通过穿过地层的钻孔传送载体; 使用设置在载体上的NMR工具对地层中的敏感体积进行核磁共振（NMR）测量以提供弛豫时间的分布; 识别松弛时间分布中的峰值; 基于所述至少一个峰的特征选择至少一个峰; 以及使用与所述至少一个峰值相关联的弛豫时间估计所述性质。
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公开(公告)号：US10353104B2
公开(公告)日：2019-07-16
申请号：US13433570
申请日：2012-03-29
申请人： Lilong Li
发明人： Lilong Li
摘要： A method for estimating a property of an earth formation includes: conveying a carrier through a borehole penetrating the earth formation; performing nuclear magnetic resonance (NMR) measurements on a sensitive volume in the formation using an NMR tool disposed at the carrier to provide a distribution of relaxation times; identifying peaks in the distribution of relaxation times; selecting at least one peak based on a characteristic of the at least one peak; and estimating the property using a relaxation time associated with the at least one peak.
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