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公开(公告)号：US08629678B2
公开(公告)日：2014-01-14
申请号：US12203483
申请日：2008-09-03
申请人： Randy Gold , Stanislav W. Forgang , Dinesh P. Shah
发明人： Randy Gold , Stanislav W. Forgang , Dinesh P. Shah
IPC分类号： G01V3/00
CPC分类号： G01V3/20
摘要： An apparatus for providing an image of a resistivity property of an earth formation surrounding a borehole is provided. The apparatus, in one aspect, may include a plurality of measure electrodes that are configured to convey an electrical current into the earth formation. In one aspect, each measure electrode may be substantially surrounded by an associated insulator that extends away from a tool body in a manner that blocks at least a portion of a vertical current flowing in a conductive fluid when the tool is operated to log the borehole. A processor provides an image of the resistivity property of the earth formation using the current in plurality of measure electrodes.
摘要翻译： 提供了一种用于提供围绕钻孔的地层的电阻率特性的图像的装置。 在一个方面，该装置可以包括被配置为将电流传送到地层中的多个测量电极。 在一个方面，每个测量电极可以基本上被相关联的绝缘体围绕，所述绝缘体在工具被操作以对准井眼时阻止在导电流体中流动的垂直电流的至少一部分的工具主体。 处理器使用多个测量电极中的电流提供地层的电阻率特性的图像。
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32.发明授权公开(公告)号：US07969153B2
公开(公告)日：2011-06-28
申请号：US12185268
申请日：2008-08-04
IPC分类号： G01V3/28
CPC分类号： G01V3/28
摘要： A reactance is introduced into a flow path of axial currents in an induction logging tool. The reactance may be a capacitor or an inductor. A transmitter antenna is operated at a frequency defined by a cutoff frequency related to the reactance.
摘要翻译： 在感应测井工具中的电流的流动路径中引入电抗。 电抗可以是电容器或电感器。 发射机天线以与电抗相关的截止频率限定的频率工作。
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33.发明授权Method and apparatus for enhancing formation resistivity images obtained with downhole galvanic tools 有权用于提高用井下电动工具获得的地层电阻率图像的方法和装置公开(公告)号：US07804302B2
公开(公告)日：2010-09-28
申请号：US11201251
申请日：2005-08-10
申请人： Stanislav W. Forgang , Randy Gold
发明人： Stanislav W. Forgang , Randy Gold
CPC分类号： G01V3/24
摘要： The average current at a plurality of measure electrodes of a resistivity imaging tool is determined and subtracted from the individual measure currents to give a resistivity image with improved dynamic range.
摘要翻译： 确定电阻率成像工具的多个测量电极处的平均电流，并从各个测量电流中减去，以获得具有改善的动态范围的电阻率图像。
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公开(公告)号：US20100052687A1
公开(公告)日：2010-03-04
申请号：US12199278
申请日：2008-08-27
CPC分类号： G01V3/20
摘要： An imaging tool made includes a pad whose curvature is chosen based on the expected range of borehole radius and the pad size so as to maintain the maximum standoff below a desired value. The curvature may be adjusted using fasteners.
摘要翻译： 所制成的成像工具包括其基于钻孔半径的预期范围和垫尺寸来选择曲率的垫，以便将最大间隔保持在期望值以下。 可以使用紧固件来调节曲率。
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35.发明申请公开(公告)号：US20090306896A1
公开(公告)日：2009-12-10
申请号：US12425074
申请日：2009-04-16
申请人： Stanislav W. Forgang , Randy Gold
发明人： Stanislav W. Forgang , Randy Gold
CPC分类号： G01V3/24
摘要： Sequential measurements are made using a two terminal resistivity imaging device wherein the measure electrodes are activated sequentially with the remaining electrodes in a floating mode. This eliminates the hardware requirements for focusing electrodes, prevents galvanic leakage between proximal electrodes and the effects of mutual coupling between circuits including proximal electrodes.
摘要翻译： 使用两端电阻率成像装置进行连续测量，其中测量电极以浮动模式依次激活剩余电极。 这消除了对聚焦电极的硬件要求，防止近端电极之间的电流泄漏以及包括近端电极的电路之间的相互耦合的影响。
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36.发明授权公开(公告)号：US07408355B1
公开(公告)日：2008-08-05
申请号：US11627172
申请日：2007-01-25
IPC分类号： G01V3/28
CPC分类号： G01V3/28
摘要： Calibration of the arrays of a multicomponent induction logging tool is achieved by positioning the tool horizontally above ground. The upper and lower housings of the tool are connected by a borehole conductivity simulator which as a resistance comparable to that of a borehole. Axial and radial positioning of the transmitter coils is done by monitoring outputs at receiver coils to achieve a minimum.
摘要翻译： 通过将工具水平放置在地面上来实现多组件感应测井工具阵列的校准。 工具的上壳体和下壳体通过钻孔电导率模拟器连接，该模拟器作为与钻孔相当的电阻。 发射器线圈的轴向和径向定位是通过监视接收器线圈处的输出来实现的。
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37.发明申请公开(公告)号：US20090009174A1
公开(公告)日：2009-01-08
申请号：US12185220
申请日：2008-08-04
IPC分类号： G01V3/30
CPC分类号： G01V3/28
摘要： Calibration of the arrays of a multicomponent induction logging tool is achieved by positioning the tool horizontally above ground. The upper and lower housings of the tool are connected by a borehole conductivity simulator which as a resistance comparable to that of a borehole. Axial and radial positioning of the transmitter coils is done by monitoring outputs at receiver coils to achieve a minimum.
摘要翻译： 通过将工具水平放置在地面上来实现多组件感应测井工具阵列的校准。 工具的上壳体和下壳体通过钻孔电导率模拟器连接，该模拟器作为与钻孔相当的电阻。 发射器线圈的轴向和径向定位是通过监视接收器线圈处的输出来实现的。
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38.发明授权Compact magnetic sensor for multi-component induction and micro-resistivity measurements 有权用于多分量感应和微电阻测量的紧凑型磁传感器公开(公告)号：US07443168B2
公开(公告)日：2008-10-28
申请号：US10834411
申请日：2004-04-29
申请人： Randy Gold , Stanislav W. Forgang
发明人： Randy Gold , Stanislav W. Forgang
CPC分类号： G01V3/28
摘要： A compact magnetic sensor is described that is capable of use in pad-mounted applications and field-focusing applications. A downhole induction tool is described with a compact induction sensor having electromagnetic transmitters wound on a longitudinal core member of a C-clamp shaped transmitter core. The downhole induction tool is suitable for transmitting magnetic excitation fields in multiple directions, both parallel and transverse to the downhole induction tool's longitudinal axis, with minimal susceptibility to errors associated with parasitic eddy currents induced in the metal components surrounding the transmitter and receiver coils. The horizontal (transverse) members of the C-clamp shaped transmitter core can be rotated to orient a magnetic excitation flux path passing between the horizontal (transverse) members and through a downhole formation. The horizontal members can be replicated on a single longitudinal member to shape the magnetic excitation flux path.
摘要翻译： 描述了一种紧凑型磁传感器，其可用于垫安装应用和现场聚焦应用。 使用紧凑型感应传感器描述井下感应工具，其具有卷绕在C形夹状发射器芯的纵向芯部构件上的电磁发射器。 井下感应工具适用于沿垂直于井下感应工具的纵向轴线的平行和横向的多个方向传递磁场，对于在发射机和接收机线圈周围的金属部件中感应的寄生涡流的误差的影响最小。 可以旋转C形夹状发射器芯的水平（横向）构件，以使通过水平（横向）构件之间的磁激励通量路径定向并通过井下形成。 水平构件可以在单个纵向构件上复制，以形成磁激励通量路径。
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39.发明授权公开(公告)号：US07205770B2
公开(公告)日：2007-04-17
申请号：US11371052
申请日：2006-03-08
IPC分类号： G01V3/28
CPC分类号： G01V3/28
摘要： Calibration of the arrays of a multicomponent induction logging tool is achieved by positioning the tool horizontally above ground. The upper and lower housings of the tool are connected by a borehole conductivity simulator which as a resistance comparable to that of a borehole. Axial and radial positioning of the transmitter coils is done by monitoring outputs at receiver coils to achieve a minimum.
摘要翻译： 通过将工具水平放置在地面上来实现多组件感应测井工具阵列的校准。 工具的上壳体和下壳体通过钻孔电导率模拟器连接，该模拟器作为与钻孔相当的电阻。 发射器线圈的轴向和径向定位是通过监视接收器线圈处的输出来实现的。
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公开(公告)号：US20150330216A1
公开(公告)日：2015-11-19
申请号：US14280037
申请日：2014-05-16
CPC分类号： E21B47/122 , E21B47/011 , E21B49/00 , G01V3/12 , G01V3/26 , G01V3/28 , G01V3/30
摘要： An apparatus for estimating a property of an earth formation includes: a carrier configured to be conveyed through a borehole penetrating an earth formation; a first fractal-shaped antenna element disposed on the carrier and configured to at least one of transmit electromagnetic energy into the formation and receive electromagnetic energy from the formation; and a second fractal-shaped antenna element electrically connected to the first fractal-shaped antenna element at a connection and configured to at least one of transmit electromagnetic energy into the formation and receive electromagnetic energy from the formation; wherein the second fractal-shaped antenna element is substantially a mirror image of the first fractal antenna element with respect to a reflection about the connection.
摘要翻译： 用于估计地球物理性质的装置包括：构造成通过穿透地层的钻孔传送的载体; 第一分形状天线元件，其设置在所述载体上并且被配置为将所述电磁能量发射到所述地层中并从所述地层接收电磁能中的至少一个; 以及第二分形状天线元件，其在连接处电连接到所述第一分形天线元件，并且被配置为向所述地层中传输电磁能量中的至少一个并且接收来自所述地层的电磁能量; 其中所述第二分形天线元件相对于围绕所述连接的反射基本上是所述第一分形天线元件的镜像。
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