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公开(公告)号：US10139517B2
公开(公告)日：2018-11-27
申请号：US14577663
申请日：2014-12-19
摘要： A method for imaging an earth formation includes estimating an apparent resistivity (AR) value and an apparent distance to a bedding plane (AD2B) value for each of a plurality of samples derived from measurements of a time-dependent transient electromagnetic signal, estimating an inversion-based resistivity value (IB-R) and an inversion-based distance to a bedding plane (IB-D2B) value at a first sample of each consecutive depth interval, wherein each depth interval includes a plurality of consecutive samples, and determining a difference between apparent values and the corresponding inversion-based values. The method further includes generating an image of the earth formation using the AR and AD2B values for the entire interval if the difference is less than a threshold value and generating an image of the earth formation using IB-R and IB-D2B values for the entire interval if the difference is greater than the threshold value.
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2.发明授权Fast inversion of MWD transient EM data excited by a pulse of an arbitrary shape 有权通过任意形状的脉冲激发的MWD瞬态EM数据的快速反演公开(公告)号：US09562990B2
公开(公告)日：2017-02-07
申请号：US13849828
申请日：2013-03-25
摘要： A system and method of estimating properties of a subsurface formation are described. The method includes transmitting an excitation current pulse into the formation, receiving an induced pulse used to generate input data, and performing an inversion on the input data using a lookup table based on a shape of the excitation current pulse to estimate the properties of the subsurface formation.
摘要翻译： 描述了一种估计地下地层特性的系统和方法。 该方法包括将激励电流脉冲发送到地层中，接收用于产生输入数据的感应脉冲，以及使用基于激励电流脉冲的形状的查找表对输入数据执行反转以估计地下特性 形成。
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3.发明申请LATE TIME ROTATION PROCESSING OF MULTI-COMPONENT TRANSIENT EM DATA FOR FORMATION DIP AND AZIMUTH 审中-公开用于形成DIP和AZIMUTH的多组分瞬态EM数据的时间旋转处理公开(公告)号：US20150134256A1
公开(公告)日：2015-05-14
申请号：US14539014
申请日：2014-11-12
摘要： A system and method to determine a dip angle and an azimuth angle of a formation are described. The system includes a transmitter disposed in a borehole to change a transmitted current to induce a current in an earth formation, and a receiver disposed in the borehole, spaced apart from the transmitter, to receive transient electromagnetic signals. The system also includes a processor to extract multi-time focusing (MTF) responses from the transient electromagnetic signals, determine a relative dip angle and a rotation of a tool comprising the transmitter and receiver based on the MTF responses, and estimate the dip angle and the azimuth angle of the formation based on the relative dip angle and the rotation of the tool.
摘要翻译： 描述了确定地层的倾角和方位角的系统和方法。 该系统包括设置在钻孔中的发射器，以改变传输的电流以感应地层中的电流;以及布置在距离发射器间隔开的钻孔中的接收器，以接收瞬时电磁信号。 该系统还包括处理器，用于从瞬态电磁信号中提取多次聚焦（MTF）响应，基于MTF响应确定包括发射器和接收器的工具的相对倾角和旋转，并估计倾角 基于相对倾角和工具旋转的地层的方位角。
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4.发明申请FAST INVERSION OF MWD TRANSIENT EM DATA EXCITED BY A PULSE OF AN ARBITRARY SHAPE 有权通过脉冲形状激发的MWD瞬态EM数据的快速反演公开(公告)号：US20140288834A1
公开(公告)日：2014-09-25
申请号：US13849828
申请日：2013-03-25
IPC分类号： G01V3/38
摘要： A system and method of estimating properties of a subsurface formation are described. The method includes transmitting an excitation current pulse into the formation, receiving an induced pulse used to generate input data, and performing an inversion on the input data using a lookup table based on a shape of the excitation current pulse to estimate the properties of the subsurface formation.
摘要翻译： 描述了一种估计地下地层特性的系统和方法。 该方法包括将激励电流脉冲发送到地层中，接收用于产生输入数据的感应脉冲，以及使用基于激励电流脉冲的形状的查找表对输入数据执行反转以估计地下特性 形成。
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公开(公告)号：US07567869B2
公开(公告)日：2009-07-28
申请号：US11741575
申请日：2007-04-27
IPC分类号： G01V3/26 , G01V3/10 , G01V3/36 , G01V3/38 , G01V3/00 , G01V3/08 , G01V3/12 , G01V3/28 , G01V3/30 , G06F19/00
CPC分类号： G01V3/28
摘要： Measurements made with an induction logging tool are processed to provide a resistivity model of fluid invasion of the formation. Up to five zones can be determined over a radial distance of about 0.6 m. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
摘要翻译： 用感应测井工具进行的测量被处理以提供地层流体侵入的电阻率模型。 可以在约0.6米的径向距离上确定多达五个区域。 要强调的是，该摘要被提供以符合要求摘要的规则，这将允许搜索者或其他读者快速确定技术公开的主题。 提交它的理解是，它不会用于解释或限制权利要求的范围或含义。
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公开(公告)号：US20080270032A1
公开(公告)日：2008-10-30
申请号：US11741575
申请日：2007-04-27
IPC分类号： G01V3/18
CPC分类号： G01V3/28
摘要： Measurements made with an induction logging tool are processed to provide a resistivity model of fluid invasion of the formation. Up to five zones can be determined over a radial distance of about 0.6 m. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
摘要翻译： 用感应测井工具进行的测量被处理以提供地层流体侵入的电阻率模型。 可以在约0.6米的径向距离上确定多达五个区域。 要强调的是，该摘要被提供以符合要求摘要的规则，这将允许搜索者或其他读者快速确定技术公开的主题。 提交它的理解是，它不会用于解释或限制权利要求的范围或含义。
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公开(公告)号：US09841527B2
公开(公告)日：2017-12-12
申请号：US13903665
申请日：2013-05-28
申请人： Marina N. Nikitenko
发明人： Marina N. Nikitenko
CPC分类号： G01V3/28
摘要： A method of processing electromagnetic signal data includes: disposing a downhole tool in a borehole in an earth formation, the downhole tool including at least one electromagnetic transmitter; performing a downhole electromagnetic operation, the operation including transmitting an electromagnetic pulse from the transmitter into the formation and measuring a time domain transient electromagnetic (TEM) signal over a selected time interval following a transmitter turn-off time; transforming the measured time domain TEM signal into a frequency domain TEM signal measured; and applying an inversion technique to the transformed frequency domain TEM signal to estimate one or more formation parameters.
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8.发明申请HYBRID IMAGE OF EARTH FORMATION BASED ON TRANSIENT ELECTROMAGNETC MEASUREMENTS 审中-公开基于瞬态电磁测量的地震形成混合图像公开(公告)号：US20160178787A1
公开(公告)日：2016-06-23
申请号：US14577663
申请日：2014-12-19
摘要： A method for imaging an earth formation includes estimating an apparent resistivity (AR) value and an apparent distance to a bedding plane (AD2B) value for each of a plurality of samples derived from measurements of a time-dependent transient electromagnetic signal, estimating an inversion-based resistivity value (IB-R) and an inversion-based distance to a bedding plane (IB-D2B) value at a first sample of each consecutive depth interval, wherein each depth interval includes a plurality of consecutive samples, and determining a difference between apparent values and the corresponding inversion-based values. The method further includes generating an image of the earth formation using the AR and AD2B values for the entire interval if the difference is less than a threshold value and generating an image of the earth formation using IB-R and IB-D2B values for the entire interval if the difference is greater than the threshold value.
摘要翻译： 用于对地球成像进行成像的方法包括估计从时间相关的瞬时电磁信号的测量导出的多个样本中的每个样本的视电阻率（AR）值和与层平面（AD2B）值的表观距离，估计反演 （IB-R）和基于与每个连续深度间隔的第一样本的层叠平面（IB-D2B）值的基于反演的距离，其中每个深度间隔包括多个连续样本，并且确定差异 在表观值和相应的基于反演的值之间。 该方法还包括：如果该差小于阈值，则使用全部间隔的AR和AD2B值来产生地层的图像，并且使用IB-R和IB-D2B值为整体生成地层的图像 间隔如果差值大于阈值。
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公开(公告)号：US20150137818A1
公开(公告)日：2015-05-21
申请号：US14546134
申请日：2014-11-18
IPC分类号： E21B47/12
CPC分类号： E21B47/122 , G01V3/34
摘要： A system and method to compress transient signals are described. The system includes a transmitter disposed in a borehole to change a transmitted current and induce a current in an earth formation, and a receiver disposed in the borehole to receive the transient signals resulting from the transmitted current. The system also includes a processor to compress the transient signals, the processor compressing the transient signals based on a spline approximation method or an Eigen value method for each transient signal based on whether the spline approximation method or the Eigen value method results in a fewer number of parameters representing the transient signal.
摘要翻译： 描述了压缩瞬态信号的系统和方法。 该系统包括设置在钻孔中的变送器，以改变传输的电流并且引起地层中的电流，以及设置在钻孔中的接收器，以接收由传输的电流产生的瞬态信号。 该系统还包括用于压缩瞬态信号的处理器，处理器基于用于每个瞬态信号的样条近似方法或特征值方法来压缩瞬态信号，基于样条近似方法或本征值方法是否导致较少数量 表示瞬态信号的参数。
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公开(公告)号：US09617846B2
公开(公告)日：2017-04-11
申请号：US14546134
申请日：2014-11-18
CPC分类号： E21B47/122 , G01V3/34
摘要： A system and method to compress transient signals are described. The system includes a transmitter disposed in a borehole to change a transmitted current and induce a current in an earth formation, and a receiver disposed in the borehole to receive the transient signals resulting from the transmitted current. The system also includes a processor to compress the transient signals, the processor compressing the transient signals based on a spline approximation method or an Eigen value method for each transient signal based on whether the spline approximation method or the Eigen value method results in a fewer number of parameters representing the transient signal.
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