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公开(公告)号：US07427863B2
公开(公告)日：2008-09-23
申请号：US11457371
申请日：2006-07-13
IPC分类号： G01V3/20
CPC分类号： G01V3/24
摘要： Method and system for calculating resistivity of an earth formation. At least some of the illustrative embodiments are methods comprising transmitting a current from a first current source, receiving at least part of the current at a first current return, said first current disposed remotely from the first current source, and measuring a first voltage at a monitor electrode, said monitor electrode disposed more remotely from below the first current source than said first current return.
摘要翻译： 计算地层电阻率的方法和系统。 至少一些说明性实施例是包括从第一电流源传输电流的方法，在第一电流返回时接收电流的至少一部分，远离第一电流源布置的第一电流，以及在第一电流源处测量第一电压 监视电极，所述监视电极比所述第一电流返回更远离所述第一电流源的下方设置。
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公开(公告)号：US07746078B2
公开(公告)日：2010-06-29
申请号：US12201135
申请日：2008-08-29
IPC分类号： G01V3/20
CPC分类号： G01V3/24
摘要： Calculating resistivity of an earth formation. At least some of the illustrative embodiments are systems including: a first current source current return (CSCR) pair, said first CSCR pair comprises a first current source and a first current return, the first current return receives current from the first current source; a second CSCR pair, the second CSCR pair disposed along a longitudinal axis of said apparatus from the first CSCR pair, the second CSCR pair comprises a second current source and a second current return, and the second current return receives current from the second current source; and a monitor electrode disposed between the first CSCR pair and the second CSCR pair, a distance between the first current source and the monitor electrode is substantially equal to the distance between the second current source and the monitor electrode, and the monitor electrode monitors a first voltage and a second voltage.
摘要翻译： 计算地层的电阻率。 至少一些说明性实施例是系统，其包括：第一电流源电流返回（CSCR）对，所述第一CSCR对包括第一电流源和第一电流返回，第一电流返回从第一电流源接收电流; 第二CSCR对，所述第二CSCR对沿着所述装置的纵轴从所述第一CSCR对设置，所述第二CSCR对包括第二电流源和第二电流返回，并且所述第二电流返回接收来自所述第二电流源的电流 ; 以及设置在所述第一CSCR对和所述第二CSCR对之间的监视电极，所述第一电流源和所述监视电极之间的距离基本上等于所述第二电流源与所述监视电极之间的距离，并且所述监视电极监视第一 电压和第二电压。
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公开(公告)号：US20080315884A1
公开(公告)日：2008-12-25
申请号：US12201135
申请日：2008-08-29
IPC分类号： G01V3/20
CPC分类号： G01V3/24
摘要： A multi-mode oil base mud imager for use in non-conductive drilling fluid includes at least one current source-a current return pair, and one or more monitor electrodes not located between the current source and the current return of the current source-current return pair. Where more than one current source-current return pair is included, the tool is capable of multiple depths of investigation into surrounding formation. This data can be used as a gauge to establish the reliability of the data and to determine the resistance of the invaded zone around the borehole, as well as standoff distance of the tool from the borehole wall.
摘要翻译： 用于非导电钻井流体的多模式油基泥浆成像仪包括至少一个电流源 - 电流返回对以及不位于电流源和电流源电流的电流返回之间的一个或多个监测电极 返回对。 如果包含多于一个电流源 - 电流返回对，则该工具能够对周围地层进行多个深度的调查。 该数据可以用作测量仪，以确定数据的可靠性，并确定钻孔周围的入侵区域的阻力以及工具与钻孔壁的间隔距离。
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公开(公告)号：US07098664B2
公开(公告)日：2006-08-29
申请号：US10743511
申请日：2003-12-22
IPC分类号： G01V3/20
CPC分类号： G01V3/24
摘要： A multi-mode oil base mud imager for use in non-conductive drilling fluid includes at least one current source—a current return pair, and one or more monitor electrodes not located between the current source and the current return of the current source-current return pair. Where more than one current source-current return pair is included, the tool is capable of multiple depths of investigation into surrounding formation. This data can be used as a gauge to establish the reliability of the data and to determine the resistance of the invaded zone around the borehole, as well as standoff distance of the tool from the borehole wall.
摘要翻译： 用于非导电钻井流体的多模式油基泥浆成像仪包括至少一个电流源 - 电流返回对以及不位于电流源和电流源电流的电流返回之间的一个或多个监测电极 返回对。 如果包含多于一个电流源 - 电流返回对，则该工具能够对周围地层进行多个深度的调查。 该数据可以用作测量仪，以确定数据的可靠性，并确定钻孔周围的入侵区域的阻力以及工具与钻孔壁的间隔距离。
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5.发明授权Antenna coupling component measurement tool having a rotating antenna configuration 有权具有旋转天线配置的天线耦合部件测量工具公开(公告)号：US09157315B2
公开(公告)日：2015-10-13
申请号：US13588739
申请日：2012-08-17
IPC分类号： G01V3/30 , G01V3/28 , E21B47/024
CPC分类号： G01V3/28 , E21B47/024 , G01B7/30 , G01V3/34
摘要： Disclosed herein are electromagnetic resistivity logging systems and methods that employ an antenna configuration having at most two transmitter or receiver antenna orientations that rotate relative to the borehole. The measurements made by this reduced-complexity antenna configuration enable the determination of at least seven components of a coupling matrix, which may be determined using a linear system of equations that express the azimuthal dependence of the measurements. For increased reliability, measurement averaging may be performed in azimuthally spaced bins. The coupling matrix components can then be used as the basis for determining logs of various formation parameters, including vertical resistivity and anisotropy.
摘要翻译： 这里公开的电磁波测井系统和方法采用具有相对于钻孔旋转的至多两个发射器或接收器天线方向的天线配置。 通过这种降低复杂度的天线配置进行的测量使得能够确定耦合矩阵的至少七个分量，其可以使用表达测量的方位依赖性的线性方程组来确定。 为了增加可靠性，可以在方位分隔的箱中进行测量平均。 然后可以将耦合矩阵分量用作确定各种地层参数的测井的基础，包括垂直电阻率和各向异性。
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6.发明授权公开(公告)号：US08030937B2
公开(公告)日：2011-10-04
申请号：US12088061
申请日：2006-12-11
CPC分类号： G01V3/24
摘要： Oil-based mud imaging systems and methods having leakage current compensation. In some embodiments, disclosed logging systems include a logging tool in communication with surface computing facilities. The logging tool is provided with a sensor array having at least two voltage electrodes positioned between at least two current electrodes that create an electric field in a borehole wall, and is further provided with electronics coupled to the current electrodes to determine a differential voltage between the voltage electrodes in response to different current frequencies from the current electrodes. From the voltage measurements at different frequencies, the computing facilities determine borehole wall resistivity as a function of depth and azimuth, and may display the resistivity as a borehole wall image.
摘要翻译： 油泥成像系统和方法具有漏电流补偿。 在一些实施例中，公开的记录系统包括与表面计算设备通信的测井工具。 记录工具设置有传感器阵列，其具有位于至少两个电流电极之间的至少两个电压电极，其在井壁中产生电场，并且还设置有耦合到电流电极的电子线以确定 电压电极响应于来自当前电极的不同电流频率。 根据不同频率的电压测量，计算设备确定井壁电阻率作为深度和方位角的函数，并可以将电阻率显示为井壁图像。
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7.发明申请公开(公告)号：US20080252296A1
公开(公告)日：2008-10-16
申请号：US12088061
申请日：2006-12-11
CPC分类号： G01V3/24
摘要： Oil-based mud imaging systems and methods having leakage current compensation. In some embodiments, disclosed logging systems include a logging tool in communication with surface computing facilities. The logging tool is provided with a sensor array having at least two voltage electrodes positioned between at least two current electrodes that create an electric field in a borehole wall, and is further provided with electronics coupled to the current electrodes to determine a differential voltage between the voltage electrodes in response to different current frequencies from the current electrodes. From the voltage measurements at different frequencies, the computing facilities determine borehole wall resistivity as a function of depth and azimuth, and may display the resistivity as a borehole wall image.
摘要翻译： 油泥成像系统和方法具有漏电流补偿。 在一些实施例中，公开的记录系统包括与表面计算设备通信的测井工具。 记录工具设置有传感器阵列，其具有位于至少两个电流电极之间的至少两个电压电极，其在井壁中产生电场，并且还设置有耦合到电流电极的电子线以确定 电压电极响应于来自当前电极的不同电流频率。 根据不同频率的电压测量，计算设备确定井壁电阻率作为深度和方位角的函数，并可以将电阻率显示为井壁图像。
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公开(公告)号：US07046010B2
公开(公告)日：2006-05-16
申请号：US10743508
申请日：2003-12-22
IPC分类号： G01V3/02
CPC分类号： G01V3/20
摘要： A multi-mode resistivity tool measures at multiple depths into the near-borehole formation. By use of a four mode tool, measuring to four depths at the formation, a more accurate invasion zone resistivity measurement may be made than previously known. The tool itself is shown as including six concentric electrodes, although not every electrode is necessary for every mode.
摘要翻译： 多模电阻率工具在多个深度测量近井眼形成。 通过使用四模式工具，在地层测量到四个深度，可以比先前已知的更准确的入侵区电阻率测量。 该工具本身显示为包括六个同心电极，尽管不是每个电极都是每个模式所必需的。
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公开(公告)号：US10553927B2
公开(公告)日：2020-02-04
申请号：US13499739
申请日：2009-10-09
摘要： A downhole tool including a transmitter coil assembly and a receiver coil assembly. The coil assembly includes at least one first coil having a first support member with a first single layer of wire wound therearound. The coil assembly further includes at least one second coil. The second coil includes a second support member having a second single layer of wire wound therearound. The first support member is disposed within the second support member, and the first single layer spaced apart from the second single wire by a distance of D.
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10.发明授权公开(公告)号：US10222507B2
公开(公告)日：2019-03-05
申请号：US12808193
申请日：2008-11-19
摘要： Disclosed herein are various telemetry systems and methods suitable for communicating a cylindrical volume of formation property measurements to the surface. Some system embodiments include a downhole processor coupled to a telemetry transmitter. The downhole processor determines a compressed representation of the formation property measurements and/or selects a subset of the measurements for transmission uphole. The subset selection can be based on selected radial distances having characteristics that potentially indicate features of interest to a user. Such features include bed boundaries, and the characteristics include sinusoidal variation as a function of azimuth, large changes in this sinusoidal variation versus radial distance, or inversion suggesting the presence of a bed boundary. Various compressed representations of the cylindrical data volume are disclosed, including representations based on parameters of a sinusoidal model, representations based on a two dimensional transform, and representations based on estimates of distance and direction to a bed boundary.
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