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公开(公告)号：US20130054145A1
公开(公告)日：2013-02-28
申请号：US13220112
申请日：2011-08-29
CPC分类号： G01V3/30 , G01V3/28 , G01V11/002
摘要： In various embodiments, apparatus and methods are provided to determine formation resistivity associated with a well. Measurements taken using sub-arrays of a tool at different distances of investigation can be used to determine formation resistivity, where the sub-arrays are arranged to make azimuthal related measurements. Separations readings related to resistivity can be generated from signals received from different directions and can be analyzed to characterize validity of a measurement reading. Additional apparatus, systems, and methods are disclosed.
摘要翻译： 在各种实施例中，提供装置和方法以确定与井相关联的地层电阻率。 使用不同调查距离的工具的子阵列进行的测量可用于确定地层电阻率，其中子阵列被布置成进行方位角相关测量。 与电阻率相关的分离读数可以从从不同方向接收的信号生成，并且可以分析以表征测量读数的有效性。 公开了附加装置，系统和方法。
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公开(公告)号：US08222902B2
公开(公告)日：2012-07-17
申请号：US12306267
申请日：2007-07-11
CPC分类号： E21B47/026 , G01V3/28 , H01Q1/04 , H01Q7/00 , H01Q21/24
摘要： A retrievable tool for steering through an earth formation includes a first tool assembly and a tilted antenna attached to the first tool assembly. The tool also includes a second tool assembly attached to the first tool assembly and a tilted antenna attached to the second tool assembly. The first tool assembly attaches to the second tool assembly so that the antennas are tilted in predetermined directions. The tilted antennas are transmitter antennas or receiver antennas. Each tool assembly is a tubular cylinder with a longitudinal axis running the length of the cylinder, wherein the tubular cylinder has two ends, each end including a rotational attachment mechanism. The tool assemblies attach to each other through their rotational attachment mechanisms. The rotational attachment mechanism may be a screw-on mechanism, press-fit mechanism, or welded mechanism.
摘要翻译： 用于通过地层转向的可回收工具包括第一工具组件和附接到第一工具组件的倾斜天线。 该工具还包括附接到第一工具组件的第二工具组件和附接到第二工具组件的倾斜天线。 第一工具组件附接到第二工具组件，使得天线在预定方向上倾斜。 倾斜的天线是发射机天线或接收机天线。 每个工具组件是具有延伸圆柱体长度的纵向轴线的管状圆柱体，其中管状圆柱体具有两个端部，每个端部包括旋转连接机构。 工具组件通过其旋转连接机构相互连接。 旋转连接机构可以是螺旋机构，压配合机构或焊接机构。
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公开(公告)号：US08174265B2
公开(公告)日：2012-05-08
申请号：US11997988
申请日：2006-08-04
摘要： In some embodiments, an apparatus (200) includes a tubular to operate downhole. The tubular has a longitudinal axis and has a cutout (210N) that has a direction that is other than 90 degrees to the longitudinal axis of the tubular. The apparatus also includes an antenna (202A) positioned in the cutout of the tubular. The antenna is to perform at least one of a transmission or reception of an electromagnetic signal that has a path that is to traverse a subsurface formation.
摘要翻译： 在一些实施例中，装置（200）包括用于井下操作的管状物。 管状物具有纵向轴线并且具有与管状物的纵向轴线不同于90度的方向的切口（210N）。 该装置还包括位于管状切口中的天线（202A）。 该天线将执行具有穿过地下地层的路径的电磁信号的发送或接收中的至少一个。
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94.发明申请公开(公告)号：US20120001637A1
公开(公告)日：2012-01-05
申请号：US13175514
申请日：2011-07-01
IPC分类号： G01V3/00
CPC分类号： G01V3/28
摘要： Methods and systems that compensate for magnetic interference in azimuthal tool measurements. At least some method embodiments include a downhole logging method that includes taking measurements as a function of orientation from inside a borehole. The measurements are associated with different azimuthal bins, and an azimuthal direction is determined for each azimuthal bin. Because the tool rotates at a constant rate, the relative number of measurements associated which the different bins can be used to measure the effective sizes of the different bins and to redetermine the effective angles of the bins in the presence of magnetic interference. The tool measurements may include, but are not limited to, formation resistivity, magnetic field, and formation density.
摘要翻译： 补偿方位角刀具测量中的磁干扰的方法和系统。 至少一些方法实施例包括井下测井方法，其包括从钻孔内部取测量作为取向的函数。 测量与不同的方位箱相关联，并且为每个方位箱确定方位角方向。 由于工具以恒定的速率旋转，所以与不同的箱体相关联的测量的相对数量可用于测量不同箱体的有效尺寸，并在存在磁性干扰的情况下重新确定箱体的有效角度。 工具测量可以包括但不限于地层电阻率，磁场和地层密度。
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公开(公告)号：US20110298461A1
公开(公告)日：2011-12-08
申请号：US13201031
申请日：2010-06-01
IPC分类号： G01V3/00
CPC分类号： G01V3/28
摘要： A drill string can include at least one transmit antenna and at least one receive antenna. The transmit antenna transmits at least one electromagnetic signal into a region of an earth formation. The receive antenna receives the signal from the region of the earth formation. The transmit antenna comprises one of a magnetic dipole and an electric dipole, and the receive antenna comprises the other of the magnetic dipole and the electric dipole. At least one characteristic of the region of the earth formation is determined, based at least partially on the signal received by the receive antenna. A homogenous part of the electromagnetic signal may be reduced, to thereby increase a depth of detection of the characteristic.
摘要翻译： 钻柱可以包括至少一个发射天线和至少一个接收天线。 发射天线将至少一个电磁信号发射到地层的一个区域。 接收天线从地层的区域接收信号。 发射天线包括磁偶极子和电偶极子中的一个，并且接收天线包括磁偶极子和电偶极子中的另一个。 至少部分地基于由接收天线接收的信号来确定地层的区域的至少一个特性。 可以减小电磁信号的同质部分，从而增加特征的检测深度。
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96.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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97.发明申请Electromagnetic Wave Resistivity Tool Having A Tilted Antenna For Determining The Horizontal And Vertical Resistivities And Relative Dip Angle In Anisotropic Earth Formations 审中-公开具有用于确定各向异性地层中的水平和垂直电阻率和相对倾角的倾斜天线的电磁波电阻率工具公开(公告)号：US20110199088A1
公开(公告)日：2011-08-18
申请号：US13095420
申请日：2011-04-27
申请人： Michael S. Bittar
发明人： Michael S. Bittar
CPC分类号： G01V3/28
摘要： This invention is directed to a downhole method and apparatus for simultaneously determining the horizontal resistivity, vertical resistivity, and relative dip angle for anisotropic earth formations. The present invention accomplishes this objective by using an antenna configuration in which a transmitter antenna and a receiver antenna are oriented in non-parallel planes such that the vertical resistivity and the relative dip angle are decoupled. Preferably, either the transmitter or the receiver is mounted in a conventional orientation in a first plane that is normal to the tool axis, and the other antenna is mounted in a second plane that is not parallel to the first plane. Although this invention is primarily intended for MWD or LWD applications, this invention is also applicable to wireline and possibly other applications.
摘要翻译： 本发明涉及用于同时确定各向异性地球地层的水平电阻率，垂直电阻率和相对倾角的井下方法和装置。 本发明通过使用其中发射机天线和接收机天线在非平行平面中定向使得垂直电阻率和相对倾角被去耦合的天线配置来实现该目的。 优选地，发射器或接收器中的传统方向安装在与工具轴线垂直的第一平面中，另一个天线安装在不平行于第一平面的第二平面中。 尽管本发明主要用于MWD或LWD应用，但本发明也适用于有线和可能的其他应用。
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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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99.发明授权公开(公告)号：US07659722B2
公开(公告)日：2010-02-09
申请号：US11835619
申请日：2007-08-08
申请人： Michael S. Bittar
发明人： Michael S. Bittar
摘要： Systems and methods for performing bed boundary detection and azimuthal resistivity logging with a single tool are disclosed. Some method embodiments include logging a borehole with an azimuthally-sensitive resistivity logging tool; deriving both a resistivity log and a boundary detection signal from measurements provided by said tool; and displaying at least one of the boundary detection signal and the resistivity log. The resistivity log measurements may be compensated logs, i.e., logs derived from measurements by one or more symmetric transmitter-receiver arrangements. Though symmetric arrangements can also serve as the basis for the boundary detection signal, a greater depth of investigation can be obtained with an asymmetric arrangement. Hence the boundary detection signal may be uncompensated.
摘要翻译： 公开了使用单个工具执行床边界检测和方位电阻率测井的系统和方法。 一些方法实施例包括用方位敏感电阻率测井工具记录井眼; 从所述工具提供的测量中导出电阻率对数和边界检测信号; 以及显示边界检测信号和电阻率对数中的至少一个。 电阻率对数测量可以是补偿记录，即，通过一个或多个对称的发射器 - 接收器布置从测量导出的对数。 虽然对称布置也可以用作边界检测信号的基础，但是通过非对称布置可以获得更大的研究深度。 因此，边界检测信号可以是无补偿的。
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公开(公告)号：US20090309798A1
公开(公告)日：2009-12-17
申请号：US12306954
申请日：2007-07-11
CPC分类号： G01V3/28 , Y10T29/49016
摘要： Logging tools having protected tilted antennas are disclosed, along with construction methods therefor. In one method embodiment, a tilted antenna on a retrievable segment of a downhole tool is constructed by: forming an elliptical recess on the segment; forming an antenna within the elliptical recess; and forming an elliptical pattern of windows over and perpendicular to the axis of the elliptical antenna. Some tool embodiments comprise a retrievable segment of a downhole tool having an elliptical recess; an elliptical antenna disposed within the elliptical recess; and an elliptical pattern of windows formed over and perpendicular to the plane of the elliptical antenna.
摘要翻译： 公开了具有受保护的倾斜天线的测井工具及其施工方法。 在一个方法实施例中，井下工具的可回收部分上的倾斜天线通过：在所述段上形成椭圆形凹部来构造; 在椭圆形凹槽内形成天线; 以及在椭圆形天线的轴线上并垂直于椭圆形天线形成窗口的椭圆形图案。 一些工具实施例包括具有椭圆形凹槽的井下工具的可回收段; 设置在所述椭圆形凹部内的椭圆形天线; 以及形成在椭圆形天线的平面上并垂直于椭圆形天线的平面的椭圆形图案。
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