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1.发明授权Accounting for bending effect in deep azimuthal resistivity measurements using inversion 有权考虑使用反演的深方位电阻率测量中的弯曲效应公开(公告)号：US09091791B2
公开(公告)日：2015-07-28
申请号：US13469927
申请日：2012-05-11
IPC分类号： E21B47/14 , G01V1/40 , G01V11/00 , G01V1/28 , G01V3/18 , E21B47/026 , E21B7/04 , G01V3/22 , E21B47/024
CPC分类号： G01V11/00 , E21B7/04 , E21B47/024 , E21B47/026 , E21B47/14 , G01V1/28 , G01V3/18 , G01V3/22
摘要： An apparatus and method for estimating a parameter of interest of an earth formation involving alignment information between non-collocated oriented receivers and their corresponding non-collocated oriented transmitters. The method may include generating signal responses indicative to energy transmitted into an earth formation; estimating differences in alignment between transmitters and receivers; using the estimated differences in alignment to compensate for misalignment; and estimating a parameter of interest using the misalignment compensated signals. The misalignment estimate may include an inversion of at least one measurement from an alignment sensor. The apparatus may include a bottom hole assembly with oriented transmitters, oriented receivers, one or more alignment sensors, and at least one processor configured to compensate for misalignment using information about difference in alignment between at least one oriented transmitter and at least one oriented receiver.
摘要翻译： 一种用于估计包括非并置定向接收机与其相应的非并置定向发射机之间的对准信息的地层的感兴趣参数的装置和方法。 该方法可以包括产生指示传输到地层中的能量的信号响应; 估计发射机和接收机之间的对准差异; 使用估计的对准差异来补偿未对准; 以及使用所述未对准补偿信号来估计感兴趣的参数。 不对准估计可以包括来自对准传感器的至少一个测量的反转。 该装置可以包括具有定向发射器，定向接收器，一个或多个对准传感器的底孔组件，以及配置成使用关于至少一个定向发射器与至少一个定向接收器之间的对准差异的信息来补偿未对准的至少一个处理器。
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2.发明申请ACCOUNTING FOR BENDING EFFECT IN DEEP AZIMUTHAL RESISTIVITY MEASUREMENTS USING INVERSION 有权用逆变法计算深层次电阻率测量中的弯曲效应公开(公告)号：US20130304384A1
公开(公告)日：2013-11-14
申请号：US13469927
申请日：2012-05-11
CPC分类号： G01V11/00 , E21B7/04 , E21B47/024 , E21B47/026 , E21B47/14 , G01V1/28 , G01V3/18 , G01V3/22
摘要： An apparatus and method for estimating a parameter of interest of an earth formation involving alignment information between non-collocated oriented receivers and their corresponding non-collocated oriented transmitters. The method may include generating signal responses indicative to energy transmitted into an earth formation; estimating differences in alignment between transmitters and receivers; using the estimated differences in alignment to compensate for misalignment; and estimating a parameter of interest using the misalignment compensated signals. The misalignment estimate may include an inversion of at least one measurement from an alignment sensor. The apparatus may include a bottom hole assembly with oriented transmitters, oriented receivers, one or more alignment sensors, and at least one processor configured to compensate for misalignment using information about difference in alignment between at least one oriented transmitter and at least one oriented receiver.
摘要翻译： 一种用于估计包括非并置定向接收机与其相应的非并置定向发射机之间的对准信息的地层的感兴趣参数的装置和方法。 该方法可以包括产生指示传输到地层中的能量的信号响应; 估计发射机和接收机之间的对准差异; 使用估计的对准差异来补偿未对准; 以及使用所述未对准补偿信号来估计感兴趣的参数。 不对准估计可以包括来自对准传感器的至少一个测量的反转。 该装置可以包括具有定向发射器，定向接收器，一个或多个对准传感器的底孔组件，以及配置成使用关于至少一个定向发射器与至少一个定向接收器之间的对准差异的信息来补偿未对准的至少一个处理器。
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3.发明授权公开(公告)号：US09297921B2
公开(公告)日：2016-03-29
申请号：US13220363
申请日：2011-08-29
申请人： Gregory B. Itskovich , Arcady Reiderman , Michael B. Rabinovich , Sergey Martakov , Emma Iomdina
发明人： Gregory B. Itskovich , Arcady Reiderman , Michael B. Rabinovich , Sergey Martakov , Emma Iomdina
CPC分类号： G01V3/28 , E21B41/0092 , E21B47/00 , E21B47/10
摘要： A transmitter on a bottomhole assembly (BHA) is used for generating a transient electromagnetic signal in an earth formation. A processor estimates the distance to a resistivity interface using a signal produced by a receiver on the BHA. The transmitter-receiver distance may be less than 1 m. The estimation of the distance is done in real time using a thin conductive sheet approximation.
摘要翻译： 井底组件（BHA）上的发射器用于在地层中产生瞬态电磁信号。 处理器使用由BHA上的接收器产生的信号估计到电阻率界面的距离。 发射机 - 接收机距离可能小于1米。 距离的估计是使用薄导电片近似来实时实现的。
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公开(公告)号：US20120059586A1
公开(公告)日：2012-03-08
申请号：US13220363
申请日：2011-08-29
申请人： Gregory B. Itskovich , Arcady Reiderman , Michael B. Rabinovich , Sergey Martakov , Emma Iomdina
发明人： Gregory B. Itskovich , Arcady Reiderman , Michael B. Rabinovich , Sergey Martakov , Emma Iomdina
CPC分类号： G01V3/28 , E21B41/0092 , E21B47/00 , E21B47/10
摘要： A transmitter on a bottomhole assembly (BHA) is used for generating a transient electromagnetic signal in an earth formation. A processor estimates the distance to a resistivity interface using a signal produced by a receiver on the BHA. The transmitter-receiver distance may be less than 1 m. The estimation of the distance is done in real time using a thin conductive sheet approximation.
摘要翻译： 井底组件（BHA）上的发射器用于在地层中产生瞬态电磁信号。 处理器使用由BHA上的接收器产生的信号估计到电阻率界面的距离。 发射机 - 接收机距离可能小于1米。 距离的估计是使用薄导电片近似来实时实现的。
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公开(公告)号：US10324432B2
公开(公告)日：2019-06-18
申请号：US15134971
申请日：2016-04-21
摘要： A system and method to control drilling based on determining a sensitivity range of an electromagnetic tool include obtaining a resistivity model over an interval of depths, obtaining an original tool response from the resistivity model over the interval of depths for a tool configuration, and positioning an artificial layer in the resistivity model to generate a modified resistivity model. The method also includes obtaining a modified tool response from the modified resistivity model and iteratively performing the positioning the artificial layer and the obtaining the modified tool response, estimating the sensitivity range according to a position of the artificial layer when a normalized difference between the original tool response and the modified tool response reaches a threshold value, and assigning a different confidence level to information obtained from the resistivity model beyond the sensitivity range and controlling the drilling based on the resistivity model and the confidence level.
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公开(公告)号：US20170306741A1
公开(公告)日：2017-10-26
申请号：US15134971
申请日：2016-04-21
摘要： A system and method to control drilling based on determining a sensitivity range of an electromagnetic tool include obtaining a resistivity model over an interval of depths, obtaining an original tool response from the resistivity model over the interval of depths for a tool configuration, and positioning an artificial layer in the resistivity model to generate a modified resistivity model. The method also includes obtaining a modified tool response from the modified resistivity model and iteratively performing the positioning the artificial layer and the obtaining the modified tool response, estimating the sensitivity range according to a position of the artificial layer when a normalized difference between the original tool response and the modified tool response reaches a threshold value, and assigning a different confidence level to information obtained from the resistivity model beyond the sensitivity range and controlling the drilling based on the resistivity model and the confidence level.
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