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1. 发明授权

US07876102B2 Mixed galvanic-inductive imaging in boreholes 有权
标题翻译：钻孔混合电感成像
公开(公告)号：US07876102B2
公开(公告)日：2011-01-25
申请号：US11852900
申请日：2007-09-10
申请人： Randy Gold , Rashid W. Khokhar , Alexandre N. Bespalov , Leonty A. Tabarovsky , Gregory B. Itskovich
发明人： Randy Gold , Rashid W. Khokhar , Alexandre N. Bespalov , Leonty A. Tabarovsky , Gregory B. Itskovich
IPC分类号： G01V3/02
CPC分类号： G01V3/24
摘要： A mixed mode tool uses an inductive source and detects galvanic currents and/or potentials at electrodes in proximity to a borehole wall to produce a resistivity image of the earth formation. Alternative, the magnetic field produced by a galvanic current is detected by an antenna coil and used to produce a resistivity image.
摘要翻译：混合模式工具使用感应源并检测靠近钻孔壁的电极处的电流和/或电位，以产生地层的电阻率图像。另一方面，由电流产生的磁场由天线线圈检测并用于产生电阻率图像。

2. 发明授权

US08203344B2 Method and apparatus for resistivity imaging in boreholes with an antenna and two spaced apart electrodes 有权
标题翻译：在具有天线和两个间隔开的电极的钻孔中进行电阻率成像的方法和装置
公开(公告)号：US08203344B2
公开(公告)日：2012-06-19
申请号：US11521016
申请日：2006-09-14
申请人： Randy Gold , Rashid W. Khokhar , Alexandre N. Bespalov , Leonty A. Tabarovsky , Gregory B. Itskovich
发明人： Randy Gold , Rashid W. Khokhar , Alexandre N. Bespalov , Leonty A. Tabarovsky , Gregory B. Itskovich
IPC分类号： G01V3/00
CPC分类号： G01V3/24
摘要： An apparatus, method and computer-readable medium for evaluating an earth formation are disclosed. The apparatus includes at least one coil on a logging tool conveyed in a borehole in the earth formation. Passage of a current through the coil induces an electrical current in the earth formation. At least two electrodes associated with the logging tool and in proximity to a wall of the borehole have a potential difference in response to the induced electrical current that is indicative of a property of the earth formation. The at least one coil may be mounted on a mandrel of a downhole assembly. The electrodes may be positioned on a first pad extendable from a mandrel of the downhole assembly.
摘要翻译：公开了一种用于评估地层的装置，方法和计算机可读介质。该装置包括在地层中的钻孔中输送的测井工具上的至少一个线圈。通过线圈的电流在地层中引起电流。与测井工具相关联并且靠近钻孔壁的至少两个电极具有响应于感应电流的电位差，其表示地层的性质。至少一个线圈可以安装在井下组件的心轴上。电极可以定位在可从井下组件的心轴延伸的第一垫上。

3. 发明申请

US20080068025A1 Method and apparatus for resistivity imaging in boreholes filled with low conductivity fluids 有权
标题翻译：用低电导率流体填充的钻孔中的电阻率成像方法和装置
公开(公告)号：US20080068025A1
公开(公告)日：2008-03-20
申请号：US11521016
申请日：2006-09-14
申请人： Randy Gold , Rashid W. Khokhar , Alexandre N. Bespalov , Leonty A. Tabarovsky
发明人： Randy Gold , Rashid W. Khokhar , Alexandre N. Bespalov , Leonty A. Tabarovsky
IPC分类号： G01V3/00
CPC分类号： G01V3/24
摘要： A mixed mode tool uses an inductive source and detects galvanic currents and/or potentials at electrodes in proximity to a borehole wall to produce a resistivity image of the earth formation.
摘要翻译：混合模式工具使用感应源并检测靠近钻孔壁的电极处的电流和/或电位，以产生地层的电阻率图像。

4. 发明申请

US20080068024A1 Method and Apparatus for Resistivity Imaging in Boreholes Filled with Low Conductivity Fluids 有权
标题翻译：用低电导率液体填充孔洞的电阻率成像方法和装置
公开(公告)号：US20080068024A1
公开(公告)日：2008-03-20
申请号：US11852900
申请日：2007-09-10
申请人： Randy Gold , Rashid W. Khokhar , Alexandre N. Bespalov , Leonty A. Tabarovsky
发明人： Randy Gold , Rashid W. Khokhar , Alexandre N. Bespalov , Leonty A. Tabarovsky
IPC分类号： G01V3/20 , G01V3/02 , G01V3/34
CPC分类号： G01V3/24
摘要： A mixed mode tool uses an inductive source and detects galvanic currents and/or potentials at electrodes in proximity to a borehole wall to produce a resistivity image of the earth formation. Alternative, the magnetic field produced by a galvanic current is detected by an antenna coil and used to produce a resistivity image. 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 understand that it will not be used to interpret or limit the scope or meaning of the claims.
摘要翻译：混合模式工具使用感应源并检测靠近钻孔壁的电极处的电流和/或电位，以产生地层的电阻率图像。可选地，由电流产生的磁场由天线线圈检测并用于产生电阻率图像。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。提交的理由是，它不会用于解释或限制权利要求的范围或含义。

5. 发明申请

US20100109672A1 Transient EM for Geosteering and LWD/Wireline Formation Evaluation 有权
标题翻译：用于地质导向和LWD /电缆形成评估的瞬态EM
公开(公告)号：US20100109672A1
公开(公告)日：2010-05-06
申请号：US12263817
申请日：2008-11-03
申请人： Michael B. Rabinovich , Alexandre N. Bespalov , Stanislav W. Forgang , Daniel T. Georgi , Gregory B. Itskovich , Leonty A. Tabarovsky
发明人： Michael B. Rabinovich , Alexandre N. Bespalov , Stanislav W. Forgang , Daniel T. Georgi , Gregory B. Itskovich , Leonty A. Tabarovsky
IPC分类号： G01V3/30
CPC分类号： G01V3/28
摘要： A transmitter on an instrument is used to induce currents in an earth formation when it is turned on or off. A Fourier transform is applied to transient measurements made in the receivers. A multifrequency focusing of the transformed data is used for applications like determination of a distance to an interface in the formation, controlling the drilling direction, determination of formation resistivities and formation strike directions.
摘要翻译：仪器上的变送器用于在接地或关闭时感应地层中的电流。傅立叶变换被应用于在接收机中进行的瞬态测量。变换数据的多频聚焦用于确定到地层中的界面的距离，控制钻井方向，确定地层电阻率和地层撞击方向等应用。

6. 发明授权

US08049507B2 Transient EM for geosteering and LWD/wireline formation evaluation 有权
标题翻译：用于地质导向和LWD /电缆形成评估的瞬态EM
公开(公告)号：US08049507B2
公开(公告)日：2011-11-01
申请号：US12263817
申请日：2008-11-03
申请人： Michael B. Rabinovich , Alexandre N. Bespalov , Stanislav W. Forgang , Daniel T. Georgi , Gregory B. Itskovich , Leonty A. Tabarovsky
发明人： Michael B. Rabinovich , Alexandre N. Bespalov , Stanislav W. Forgang , Daniel T. Georgi , Gregory B. Itskovich , Leonty A. Tabarovsky
IPC分类号： G01V3/08
CPC分类号： G01V3/28
摘要： A transmitter on an instrument is used to induce currents in an earth formation when it is turned on or off. A Fourier transform is applied to transient measurements made in the receivers. A multifrequency focusing of the transformed data is used for applications like determination of a distance to an interface in the formation, controlling the drilling direction, determination of formation resistivities and formation strike directions.
摘要翻译：仪器上的变送器用于在接地或关闭时感应地层中的电流。傅立叶变换被应用于在接收机中进行的瞬态测量。变换数据的多频聚焦用于确定到地层中的界面的距离，控制钻井方向，确定地层电阻率和地层撞击方向等应用。

7. 发明授权

US07031839B2 Multi-frequency focusing for MWD resistivity tools 有权
标题翻译： MWD电阻率工具的多频聚焦
公开(公告)号：US07031839B2
公开(公告)日：2006-04-18
申请号：US10934596
申请日：2004-09-03
申请人： Leonty A. Tabarovsky , Alexandre N. Bespalov , Stanislav W. Forgang , Michael B. Rabinovich
发明人： Leonty A. Tabarovsky , Alexandre N. Bespalov , Stanislav W. Forgang , Michael B. Rabinovich
IPC分类号： G01V1/40 , G01V3/18 , G01V5/04 , G01V9/00 , G06F19/00
CPC分类号： G01V3/28
摘要： An induction logging tool is used on a MWD bottom hole assembly. Due to the finite, nonzero, conductivity of the mandrel, conventional multi frequency focusing (MFF) does not work. A correction is made to the induction logging data to give measurements simulating a perfectly conducting mandrel. MFF can then be applied to the corrected data to give formation resistivities.
摘要翻译：在MWD井底组件上使用感应测井工具。由于心轴的有限非零导电性，传统的多频聚焦（MFF）不起作用。对感应测井数据进行校正，以给出模拟完美导电心轴的测量结果。然后可以将MFF应用于校正数据以提供形成电阻率。

8. 发明申请

US20100213943A1 METHOD FOR ACCENTUATING SIGNAL FROM AHEAD OF THE BIT 审中-公开
标题翻译：从位的前端识别信号的方法
公开(公告)号：US20100213943A1
公开(公告)日：2010-08-26
申请号：US12710438
申请日：2010-02-23
申请人： Daniel T. Georgi , Gregory B. Itskovich , Michael B. Rabinovich , Leonty A. Tabarovsky
发明人： Daniel T. Georgi , Gregory B. Itskovich , Michael B. Rabinovich , Leonty A. Tabarovsky
IPC分类号： G01V3/18
CPC分类号： G01V3/28 , G01V11/00 , G01V2210/6163 , G01V2210/6167
摘要： A method for estimating a property of a portion of an earth formation ahead of a borehole penetrating the formation, the method includes: conveying a logging tool through the borehole; receiving one or more first signals from a previous depth of the logging tool; constructing a model of the earth formation using the one or more first signals; predicting one or more second signals from the portion of the earth formation ahead of the borehole using the model; receiving one or more third signals from the portion of the earth formation ahead of the borehole; calculating a difference between the one or more third signals and the one or more second signals; and estimating the property from the difference.
摘要翻译：一种用于估计穿过地层的井眼之前的地层的一部分的性质的方法，所述方法包括：将测井工具传送通过所述钻孔; 从测井工具的先前深度接收一个或多个第一信号; 使用所述一个或多个第一信号构造地层的模型; 使用该模型预测来自钻孔前方的地层部分的一个或多个第二信号; 从钻孔前面的地层部分接收一个或多个第三信号; 计算所述一个或多个第三信号与所述一个或多个第二信号之间的差; 并从差异估算属性。

9. 发明授权

US6060886A Radial sounding electrical well logging instrument 失效
标题翻译：径向探测电测井仪
公开(公告)号：US6060886A
公开(公告)日：2000-05-09
申请号：US7159
申请日：1998-01-14
申请人： Leonty A. Tabarovsky , Antonio Fabris , Alberto G. Mezzatesta , Gregory B. Itskovich
发明人： Leonty A. Tabarovsky , Antonio Fabris , Alberto G. Mezzatesta , Gregory B. Itskovich
IPC分类号： G01V3/24 , G01V3/18
CPC分类号： G01V3/24
摘要： An apparatus for determining radial distribution of resistivity of earth formations surrounding a wellbore. The apparatus includes a sonde mandrel having an insulating exterior surface and electrodes disposed on the insulating surface at spaced apart locations. The electrodes are connected to circuits for measuring a focused current resistivity within a predetermined longitudinal span. The electrodes are also connected to circuits for measuring electrical impedance between pairs of electrodes spaced apart at a plurality of different longitudinal spacings. The preferred embodiment includes a voltage measuring circuit interconnected between a pair of electrodes which is positioned between a closest spaced pair of electrodes connected to the impedance measuring circuits, so that a vertical resolution of the impedance measurements can be limited to approximately the axial spacing of the pair of electrodes connected to the voltage measuring circuit. A method according to the invention for determining the distribution of resistivity of earth formations surrounding a wellbore includes the steps of measuring a focused current resistivity of the earth formations to determine a composite resistivity of an uninvaded zone, an invaded zone and a flushed zone. Impedance is measured between pairs of electrodes, each pair having a different longitudinal spacing, and resistivity of the flushed zone and the invaded zone are determined from the measurements of impedance. The resistivity of the uninvaded zone can then be determined from the measurement of focused current resistivity.
摘要翻译：一种用于确定井筒周围的地层的电阻率的径向分布的装置。该设备包括具有绝缘外表面的探头心轴和在间隔开的位置处设置在绝缘表面上的电极。电极连接到用于测量预定纵向跨度内的聚焦电流电阻率的电路。电极还连接到用于测量以多个不同纵向间隔间隔开的电极对之间的电阻抗的电路。优选实施例包括互连在一对电极之间的电压测量电路，该对电极位于连接到阻抗测量电路的最近间隔的一对电极之间，使得阻抗测量的垂直分辨率可以被限制在近似于一对电极连接到电压测量电路。根据本发明的用于确定围绕井筒的地层的电阻率分布的方法包括以下步骤：测量地层的聚焦电流电阻率以确定未浸没区域，入侵区域和冲洗区域的复合电阻率。电阻对之间测量阻抗，每对电极具有不同的纵向间隔，并且从阻抗的测量值确定冲洗区域和入侵区域的电阻率。然后可以从聚焦电流电阻率的测量来确定非浸没区域的电阻率。

10. 发明申请

US20130027045A1 FORMATION RESISTIVITY MEASUREMENTS USING PHASE CONTROLLED CURRENTS 有权
标题翻译：使用相位控制电流形成电阻率测量
公开(公告)号：US20130027045A1
公开(公告)日：2013-01-31
申请号：US13359581
申请日：2012-01-27
申请人： Leonty A. Tabarovsky , Stanislav W. Forgang
发明人： Leonty A. Tabarovsky , Stanislav W. Forgang
IPC分类号： G01V3/02
CPC分类号： G01V3/24 , E21B47/102
摘要： Disclosed is 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 and having a first transmitter electrode configured to inject electrical current into the formation and a first measurement electrode configured to receive electrical current for measurement due to the current injection in order to estimate the property of the earth formation. A controller is configured to determine a phase difference between injected electrical current and received electrical current. A first bucker amplifier is coupled to the first measurement electrode and configured to apply a voltage to the first measurement electrode based on the determined phase difference in order for a phase of current received by the first measurement electrode to be substantially in phase with the current injected by the first transmitter electrode.
摘要翻译：公开了一种用于估计钻孔穿透的地层的性质的装置。该装置包括：载体，被构造成通过钻孔传送，并具有配置成将电流注入到地层中的第一发射器电极;以及第一测量电极，其被配置为接收由于电流注入而进行测量的电流，以便估计地球形成。控制器被配置为确定注入的电流和接收的电流之间的相位差。第一压差放大器耦合到第一测量电极，并且被配置为基于所确定的相位差向第一测量电极施加电压，以使由第一测量电极接收的电流的相位与注入的电流基本上同相由第一发射机电极。

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