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    T2 inversions with reduced motion artifacts
    1.
    发明授权
    T2 inversions with reduced motion artifacts 有权

    公开(公告)号：US10429536B2

    公开(公告)日：2019-10-01

    申请号：US15089893

    申请日：2016-04-04

    申请人： Tobias Kischkat ,  Radu Coman ,  Holger Frank Thern

    发明人： Tobias Kischkat ,  Radu Coman ,  Holger Frank Thern

    IPC分类号： G01V3/32 ,  G01R33/50 ,  G01R33/565 ,  G01N24/08 ,  G01R33/44

    摘要： A method for processing nuclear magnetic resonance (NMR) measurement data includes receiving, with a processor, NMR measurement data obtained from an NMR tool, the NMR measurement data having an echo train affected by a motion artifact, wherein the motion artifact is related to a magnetic field magnitude that varies in a volume of interest due to a motion of the NMR tool. The method further includes reducing, with the processor, an effect on the NMR measurement data of the motion artifact by using a correcting inversion method that models the motion artifact to provide a corrected transverse relaxation time constant (T2) distribution, the correcting inversion method having a multiplicative term having a term that includes at least one local maximum and an optional decay term.

    T2 INVERSIONS WITH REDUCED MOTION ARTIFACTS
    2.
    发明申请
    T2 INVERSIONS WITH REDUCED MOTION ARTIFACTS 审中-公开

    公开(公告)号：US20170285214A1

    公开(公告)日：2017-10-05

    申请号：US15089893

    申请日：2016-04-04

    申请人： Tobias Kischkat ,  Radu Coman ,  Holger Frank Thern

    发明人： Tobias Kischkat ,  Radu Coman ,  Holger Frank Thern

    IPC分类号： G01V3/32 ,  G01R33/565 ,  G01R33/50

    CPC分类号： G01V3/32 ,  G01N24/081 ,  G01R33/448 ,  G01R33/56509

    摘要： A method for processing nuclear magnetic resonance (NMR) measurement data includes receiving, with a processor, NMR measurement data obtained from an NMR tool, the NMR measurement data having an echo train affected by a motion artifact, wherein the motion artifact is related to a magnetic field magnitude that varies in a volume of interest due to a motion of the NMR tool. The method further includes reducing, with the processor, an effect on the NMR measurement data of the motion artifact by using a correcting inversion method that models the motion artifact to provide a corrected transverse relaxation time constant (T2) distribution, the correcting inversion method having a multiplicative term having a term that includes at least one local maximum and an optional decay term.

    T2 INVERSIONS WITH REDUCED MOTION ARTIFACTS
    3.
    发明申请
    T2 INVERSIONS WITH REDUCED MOTION ARTIFACTS 有权
    T2反演与减少运动文学

    公开(公告)号：US20150241541A1

    公开(公告)日：2015-08-27

    申请号：US14190337

    申请日：2014-02-26

    申请人： Martin Blanz ,  Holger Frank Thern ,  Radu Coman

    发明人： Martin Blanz ,  Holger Frank Thern ,  Radu Coman

    IPC分类号： G01R33/565 ,  G01V3/38 ,  G01V3/32

    CPC分类号： G01R33/56509 ,  G01N24/081 ,  G01R33/448 ,  G01V3/32 ,  G01V3/38

    摘要： A method for processing nuclear magnetic resonance (NMR) measurement data includes: receiving, with a processor, NMR measurement data obtained from an NMR tool, the NMR measurement data being affected by a motion artifact and having a first echo train obtained with a long polarization time TWET and a second echo train obtained with a short polarization time TWTL that is shorter than TWET; and at least one of (i) reducing, with a processor, an effect on the NMR measurement data of the motion artifact using the first echo train and the second echo train and (ii) identifying, with a processor, the motion artifact using the first echo train and the second echo train; wherein the motion artifact is related to a magnetic field magnitude that varies in a volume of interest due to a motion of the NMR tool.

    摘要翻译： 一种用于处理核磁共振（NMR）测量数据的方法包括：用处理器接收从NMR工具获得的NMR测量数据，NMR测量数据受到运动伪影的影响，并具有由长极化获得的第一回波串 时间TWET和以短于TWET的短极化时间TWTL获得的第二回波串; 以及（i）利用处理器减少使用第一回波串和第二回波串的运动假象的NMR测量数据的影响中的至少一个，以及（ii）使用处理器识别运动假象，使用 第一回波列车和第二回波列车; 其中所述运动假象与由所述NMR工具的运动引起的感兴趣体积变化的磁场强度有关。

    NMR T2 DISTRIBUTION FROM SIMULTANEOUS T1 AND T2 INVERSIONS FOR GEOLOGIC APPLICATIONS
    4.
    发明申请
    NMR T2 DISTRIBUTION FROM SIMULTANEOUS T1 AND T2 INVERSIONS FOR GEOLOGIC APPLICATIONS 审中-公开
    NMR T2分布与地质应用的同时T1和T2反演

    公开(公告)号：US20160320519A1

    公开(公告)日：2016-11-03

    申请号：US14701008

    申请日：2015-04-30

    申请人： Martin Blanz ,  Holger Frank Thern ,  Holger Tietjen ,  Mouin Hamdan ,  Radu Coman

    发明人： Martin Blanz ,  Holger Frank Thern ,  Holger Tietjen ,  Mouin Hamdan ,  Radu Coman

    IPC分类号： G01V3/32 ,  E21B47/12 ,  G01R33/561

    CPC分类号： G01V3/32 ,  E21B47/12 ,  E21B49/00 ,  G01N24/081 ,  G01R33/448

    摘要： A method for estimating a property of a subsurface material includes conveying a carrier through a borehole penetrating the subsurface material and performing an NMR measurement in a volume of interest in the subsurface material using an NMR tool having an antenna disposed at the carrier. The method further includes receiving with the antenna a short build-up signal due to a short magnetization build-up time of the NMR measurement, an echo-train signal with short polarization time due to the NMR measurement, and an echo-train signal with long polarization time due to the NMR measurement. The method further includes inverting, simultaneously, the short build-up signal, the short-polarization-time echo-train signal, and the long-polarization-time echo-train signal using a processor to estimate the property; and transmitting a signal comprising the property to a signal receiving device.

    摘要翻译： 用于估计地下材料的性质的方法包括：使用具有布置在载体上的天线的NMR工具，将穿过穿透地下材料的钻孔的载体输送到地下材料中的感兴趣体积中的NMR测量。 该方法还包括由于NMR测量的较短的磁化积聚时间，利用天线接收短的积聚信号，由于NMR测量，具有短的极化时间的回波信号信号以及具有 由于NMR测量，极化时间长。 该方法还包括使用处理器同时反转短积累信号，短极化时间回波串信号和长极化时间回波串信号，以估计该性能; 以及将包括所述特性的信号发送到信号接收装置。

    T2 inversions with reduced motion artifacts
    6.
    发明授权
    T2 inversions with reduced motion artifacts 有权

    公开(公告)号：US09671483B2

    公开(公告)日：2017-06-06

    申请号：US14190337

    申请日：2014-02-26

    申请人： Martin Blanz ,  Holger Frank Thern ,  Radu Coman

    发明人： Martin Blanz ,  Holger Frank Thern ,  Radu Coman

    IPC分类号： G01V3/00 ,  G01R33/565 ,  G01V3/32 ,  G01V3/38 ,  G01N24/08 ,  G01R33/44

    CPC分类号： G01R33/56509 ,  G01N24/081 ,  G01R33/448 ,  G01V3/32 ,  G01V3/38

    摘要： A method for processing nuclear magnetic resonance (NMR) measurement data includes: receiving, with a processor, NMR measurement data obtained from an NMR tool, the NMR measurement data being affected by a motion artifact and having a first echo train obtained with a long polarization time TWET and a second echo train obtained with a short polarization time TWTL that is shorter than TWET; and at least one of (i) reducing, with a processor, an effect on the NMR measurement data of the motion artifact using the first echo train and the second echo train and (ii) identifying, with a processor, the motion artifact using the first echo train and the second echo train; wherein the motion artifact is related to a magnetic field magnitude that varies in a volume of interest due to a motion of the NMR tool.

    METHOD FOR AUTOMATICALLY GENERATING A FLUID PROPERTY LOG DERIVED FROM DRILLING FLUID GAS DATA
    7.
    发明申请
    METHOD FOR AUTOMATICALLY GENERATING A FLUID PROPERTY LOG DERIVED FROM DRILLING FLUID GAS DATA 审中-公开

    公开(公告)号：US20180088096A1

    公开(公告)日：2018-03-29

    申请号：US15277547

    申请日：2016-09-27

    申请人： Nicklas Ritzmann ,  Oliver Mohnke ,  Holger Frank Thern

    发明人： Nicklas Ritzmann ,  Oliver Mohnke ,  Holger Frank Thern

    IPC分类号： G01N33/00 ,  E21B49/08 ,  E21B10/00

    摘要： A method for generating a log of a value of a property of a fluid in an earth formation versus depth includes: obtaining a plurality of samples of drilling fluid that are entrained with a formation gas and correlating each sample to a depth in a borehole from which the formation gas was entrained in the drilling fluid; extracting the formation gas from each sample to provide a plurality of gas samples; analyzing each formation gas sample to provide a chemical composition of each formation gas sample in the plurality of formation gas samples; and determining a property value of the fluid in the earth formation versus depth using the chemical composition of each formation gas sample in the plurality of formation gas samples to provide the log.

    NMR data accuracy and resolution by formation modeling
    8.
    发明授权
    NMR data accuracy and resolution by formation modeling 有权
    NMR数据精度和分辨率通过地层建模

    公开(公告)号：US09024633B2

    公开(公告)日：2015-05-05

    申请号：US13366946

    申请日：2012-02-06

    申请人： Thomas Kruspe ,  Holger Frank Thern ,  Gerhard Kurz

    发明人： Thomas Kruspe ,  Holger Frank Thern ,  Gerhard Kurz

    IPC分类号： G01V3/00 ,  G01N24/08 ,  G01R33/38 ,  G01V3/32

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

    摘要： Method and apparatus for estimating a parameter of interest of an earth formation using a model based on NMR data, imaging data, and NMR tool response characteristics. The method may include constructing a model of the earth formation. The method may also include constructing a predictive model for estimating the parameter of interest. The apparatus may include an NMR tool and at least one processor configured to estimate the parameter of interest. The apparatus may also include an imaging tool configured to acquire the imaging data.

    摘要翻译： 使用基于NMR数据，成像数据和NMR工具响应特性的模型来估计地层的感兴趣参数的方法和装置。 该方法可以包括构建地层的模型。 该方法还可以包括构建用于估计感兴趣的参数的预测模型。 该装置可以包括NMR工具和被配置为估计感兴趣的参数的至少一个处理器。 该装置还可以包括被配置为获取成像数据的成像工具。

    NMR DATA ACCURACY AND RESOLUTION BY FORMATION MODELING
    10.
    发明申请
    NMR DATA ACCURACY AND RESOLUTION BY FORMATION MODELING 有权
    NMR数据的准确性和分辨率通过形成建模

    公开(公告)号：US20130200891A1

    公开(公告)日：2013-08-08

    申请号：US13366946

    申请日：2012-02-06

    申请人： Thomas Kruspe ,  Holger Frank Thern ,  Gerhard Kurz

    发明人： Thomas Kruspe ,  Holger Frank Thern ,  Gerhard Kurz

    IPC分类号： G01V3/14

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

    摘要： Method and apparatus for estimating a parameter of interest of an earth formation using a model based on NMR data, imaging data, and NMR tool response characteristics. The method may include constructing a model of the earth formation. The method may also include constructing a predictive model for estimating the parameter of interest. The apparatus may include an NMR tool and at least one processor configured to estimate the parameter of interest. The apparatus may also include an imaging tool configured to acquire the imaging data.

    摘要翻译： 使用基于NMR数据，成像数据和NMR工具响应特性的模型来估计地层的感兴趣参数的方法和装置。 该方法可以包括构建地层的模型。 该方法还可以包括构建用于估计感兴趣的参数的预测模型。 该装置可以包括NMR工具和被配置为估计感兴趣的参数的至少一个处理器。 该装置还可以包括被配置为获取成像数据的成像工具。