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1.发明授权Surface to borehole electromagnetic surveying using metallic well casings as electrodes 有权使用金属井壳作为电极的表面到井眼电磁测量公开(公告)号：US09069097B2
公开(公告)日：2015-06-30
申请号：US13131219
申请日：2009-10-22
申请人： Hong Zhang , Richard A. Rosthal
发明人： Hong Zhang , Richard A. Rosthal
CPC分类号： G01V3/28 , E21B47/122
摘要： Methods and related systems are described for making measurements of an electromagnetic field in a subterranean formation that has been induced by a current loop. The current loop uses one or more steel wellbore casings as electrodes. Receiver arrays are positioned either at surface/seafloor, in the same, or in nearby wells. In the most general case, the receivers are tri-axial. A section of metallic casing in one well can be used as a current source and the electromagnetic field at surface can be measured using an array of EM receivers placed at a range of distances from the wellbore.
摘要翻译： 描述了用于测量已经由电流回路感应的地下地层中的电磁场的方法和相关系统。 电流环使用一个或多个钢井筒壳作为电极。 接收器阵列位于表面/海底，相同或附近的井中。 在最普遍的情况下，接收器是三轴的。 一个井中的金属壳体的一部分可以用作电流源，并且可以使用放置在距离井筒的距离范围内的EM接收器的阵列来测量表面处的电磁场。
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公开(公告)号：US20090281731A1
公开(公告)日：2009-11-12
申请号：US12117089
申请日：2008-05-08
CPC分类号： G01V3/28
摘要： Impedances of an electromagnetic (EM) coil positioned in a well lined with an electrically conductive liner are determined. The impedances correspond to plural frequencies of operation of the EM coil. Based on the impedances of the EM coil corresponding to the plural frequencies, an attenuation factor associated with the electrically conductive liner is determined.
摘要翻译： 确定位于衬有导电衬垫的井中的电磁（EM）线圈的阻抗。 阻抗对应于EM线圈的多个操作频率。 基于对应于多个频率的EM线圈的阻抗，确定与导电衬垫相关联的衰减因子。
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3.发明申请Determining correction factors representing effects of different portions of a lining structure 有权确定表示衬里结构的不同部分的影响的校正因子公开(公告)号：US20090091328A1
公开(公告)日：2009-04-09
申请号：US11868379
申请日：2007-10-05
申请人： Brian Clark , Frank Morrison , Edward Nichols , Hong Zhang , Richard A. Rosthal
发明人： Brian Clark , Frank Morrison , Edward Nichols , Hong Zhang , Richard A. Rosthal
IPC分类号： G01V3/12
CPC分类号： G01V3/28
摘要： To determine effect on a magnetic field caused by a lining structure in a wellbore, an array may be deployed into the wellbore lined with the lining structure. The array comprises a plurality of sensors including sensor A configured to operate as a transmitter, sensor B configured to operate as either a transmitter or a receiver, and sensor C configured to operate as a receiver. The array measures magnetic fields using sensor B as a receiver and sensor C in response to activation of sensor B as a transmitter and sensor A. A plurality of lining structure correction factors can be calculated based on the measured magnetic fields, based on the reciprocity of the sensors.
摘要翻译： 为了确定在井眼中由衬里结构引起的对磁场的影响，阵列可以部署到衬里结构内衬的井眼中。 该阵列包括多个传感器，包括被配置为作为发射器操作的传感器A，被配置为作为发射机或接收机操作的传感器B以及被配置为作为接收机操作的传感器C. 该阵列响应于作为发射器和传感器A的传感器B的激活，使用传感器B作为接收器和传感器C来测量磁场。可以基于测量的磁场，基于测量的磁场计算多个衬里结构校正因子， 传感器。
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公开(公告)号：US06573722B2
公开(公告)日：2003-06-03
申请号：US09737891
申请日：2000-12-15
申请人： Richard A. Rosthal , Dean Homan , Thomas D. Barber , Stephen Bonner , Brian Clark , Dzevat Omeragic
发明人： Richard A. Rosthal , Dean Homan , Thomas D. Barber , Stephen Bonner , Brian Clark , Dzevat Omeragic
IPC分类号： G01V302
CPC分类号： G01V3/28
摘要： Methods and apparatus are disclosed for minimizing or eliminating an undesired axial electric current induced along a subsurface borehole in the process of subsurface measurements with transmitter and/or receiver antennas which are substantially time varying magnetic dipoles with their dipole moments aligned at an angle to the axis of the borehole. Some antennas are disposed within the borehole on instruments having a non-conductive support member. One instrument includes a conductive all-metal body with an antenna adapted for induction frequencies. Antenna shields adapted for controlled current flow are also provided with an all-metal instrument. Methods include providing an alternate path for the current along the instrument body. Another method includes emitting a controlled current to counter the undesired current. Another method corrects for the effect of the current using a superposition technique. An embodiment of the instrument includes an antenna disposed between a pair of electrically coupled electrodes. The antenna is disposed on the instrument such that it comprises a tilted or transverse magnetic dipole. Another embodiment of the instrument includes a non-conductive housing with a conductive segment disposed thereon. An antenna is disposed on the instrument about the conductive segment. Another embodiment includes an antenna disposed between two pairs of electrodes with means to measure a voltage at the electrodes when electromagnetic energy is transmitted within the borehole. Yet another instrument includes an antenna disposed between a first pair of electrodes and means to measure a voltage at the electrodes when electromagnetic energy is transmitted within the borehole. This embodiment also includes means to energize a second electrode pair in response to the voltage measured at the first electrode pair.
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5.发明授权公开(公告)号：US06380744B2
公开(公告)日：2002-04-30
申请号：US09932249
申请日：2001-08-17
申请人： Brian Clark , Richard A. Rosthal , Dean M. Homan , Dzevat Omeragic , Stephen D. Bonner , Scott S. Chesser , Thomas D. Barber
发明人： Brian Clark , Richard A. Rosthal , Dean M. Homan , Dzevat Omeragic , Stephen D. Bonner , Scott S. Chesser , Thomas D. Barber
IPC分类号： G01V330
CPC分类号： G01V3/28
摘要： A shield apparatus for use in conjunction with a well tool to selectively attenuate one or more electromagnetic energy field components as the components interact with the shield. The shield composed of a flexible strip or conductive body and comprising at least one sloped slot or sloped conductive element therein. The shield being adapted to surround an antenna mounted on a well tool. A method for rotating the axis of the magnetic dipole of a transmitter or receiver coil. A method for winding and shielding an electric coil such that the resultant coil emits or receives selected electromagnetic energy field components.
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6.发明授权公开(公告)号：US06351127B1
公开(公告)日：2002-02-26
申请号：US09452660
申请日：1999-12-01
申请人： Richard A. Rosthal , Dean M. Homan , Dzevat Omeragic , Stephen D. Bonner , Brian Clark , Scott S. Chesser , Thomas D. Barber
发明人： Richard A. Rosthal , Dean M. Homan , Dzevat Omeragic , Stephen D. Bonner , Brian Clark , Scott S. Chesser , Thomas D. Barber
IPC分类号： G01V312
CPC分类号： G01V3/28
摘要： A shield apparatus for use in conjunction with a well tool to selectively attenuate one or more electromagnetic energy field components as the components interact with the shield. The shield composed of a flexible strip or conductive body and comprising at least one sloped slot or sloped conductive element therein. The shield being adapted to surround an antenna mounted on a well tool. A method for rotating the axis of the magnetic dipole of a transmitter or receiver coil. A method for winding and shielding an electric coil such that the resultant coil emits or receives selected electromagnetic energy field components.
摘要翻译： 一种与阱工具结合使用的屏蔽装置，用于当该部件与屏蔽件相互作用时选择性地衰减一个或多个电磁能量场分量。 该屏蔽由柔性条带或导电体构成，并且包括至少一个倾斜的槽或倾斜的导电元件。 屏蔽适于包围安装在井具上的天线。 一种用于旋转发射器或接收器线圈的磁偶极子的轴线的方法。 一种用于缠绕和屏蔽电线圈使得所得线圈发射或接收所选择的电磁能量分量的方法。
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7.发明授权Method and apparatus for evaluating the resistivity of formations with high dip angles or high-contrast thin layers 有权用于评估具有高倾角或高对比度薄层的地层电阻率的方法和装置公开(公告)号：US06304086B1
公开(公告)日：2001-10-16
申请号：US09391310
申请日：1999-09-07
IPC分类号： G01V318
CPC分类号： G01V3/28
摘要： A method and apparatus for evaluating the resistivity of earth formations surrounding a borehole, particularly high-contrast thin-layer formations or at high dip angles. The method involves positioning a pair of transmitters and a pair of receivers within the borehole, the receivers or transmitters adhering to specific spacing limitations, alternately transmitting electromagnetic energy of a particular frequency and receiving voltage data associated with the transmitted energy. Multiple voltage data are acquired and a representation of a resistivity or conductivity profile is created from a formulated difference of the data from a particular depth and/or neighboring depths. The apparatus forms part of a well logging system including a well tool adapted to be moveable through a borehole. The apparatus being coupled to the well tool and adapted with means to input voltage data developed by the receivers disposed on the well tool. The apparatus further adapted with means for performing calculations to determine a conductivity profile and for recording the profile on an output record medium.
摘要翻译： 用于评估围绕钻孔，特别是高对比度薄层地层或高倾角的地层的电阻率的方法和装置。 该方法包括将钻孔内的一对发射器和一对接收器定位，接收器或发射器固定在特定的间隔限制上，交替地传送特定频率的电磁能量并接收与发射的能量相关联的电压数据。 获取多个电压数据，并且根据来自特定深度和/或相邻深度的数据的公式化差异创建电阻率或电导率分布的表示。 该装置形成测井系统的一部分，其包括适于通过钻孔移动的井口工具。 该装置耦合到阱工具并且适于输入由设置在阱工具上的接收器开发的电压数据的装置。 该装置进一步适用于执行计算以确定导电率分布和用于在输出记录介质上记录轮廓的装置。
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公开(公告)号：US5339037A
公开(公告)日：1994-08-16
申请号：US955101
申请日：1992-10-09
CPC分类号： G01V3/20
摘要： An apparatus for determining the resistivity of formations surrounding an earth borehole. An elongated electrically conductive body is movable through the borehole. A first transmitter establishes a first current in the body from a first transmitter position on the body, the first current traveling in a path that includes the body and the formations. An electrode is mounted on the body and has a surface that is electrically isolated from the surface of the body. A first electrical signal, resulting from the first current, is measured at the electrode. A second transmitter establishes a second current in the body from a second transmitter position on the body that is spaced from the first transmitter position, the second current traveling in a path that includes the body and the formations. A second electrical signal, resulting from the second current, is measured at the electrode. A current monitor measures the axial current passing a monitor position on the body to obtain a monitor current value. An indication of formation resistivity is derived as a function of the first electrical signal, the second electrical signal, and the monitor current value.
摘要翻译： 用于确定围绕地球钻孔的地层电阻率的装置。 细长的导电体可移动穿过钻孔。 第一发射器从身体上的第一发射器位置在身体中建立第一电流，第一电流在包括身体和地层的路径中行进。 电极安装在主体上并且具有与主体表面电隔离的表面。 在电极处测量由第一电流产生的第一电信号。 第二发射机从身体上与第一发射器位置间隔开的第二发射器位置在身体中建立第二电流，第二电流在包括身体和地层的路径中行进。 在电极处测量由第二电流产生的第二电信号。 电流监视器测量通过身体上的监视器位置的轴向电流以获得监视器电流值。 导出地层电阻率的指示作为第一电信号，第二电信号和监视电流值的函数。
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9.发明授权Dipmeter apparatus and method using transducer array having longitudinally spaced transducers 失效使用具有纵向间隔的换能器的换能器阵列的测深仪装置和方
公开(公告)号：US5200705A
公开(公告)日：1993-04-06
申请号：US786138
申请日：1991-10-31
IPC分类号： E21B47/026 , G01V3/20
CPC分类号： G01V3/20 , E21B47/026
摘要： A disclosed embodiment utilizes one or more toroidal coil antennas mounted, in an insulating medium, on a drill collar to induce currents which travel in a path that includes the drill collar and earth formations around the drill collar. At least one array of electrodes is provided on at least one stabilizer blade of the drill collar and is utilized to detect currents transmitted by toroidal coil antennas which return via the formations to the electrodes laterally; that is, approximately normal to the axis of the drill collar. Signal traces are obtained from measurements taken at respective ones of the transducers, and a dip characteristic of the formations is determined from the signal traces and from signals representing the rotational orientation of the drill collar.
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10.发明申请SURFACE TO BOREHOLE ELECTROMAGNETIC SURVEYING USING METALLIC WELL CASINGS AS ELECTRODES 有权使用金属外壳作为电极的表面到电磁测量公开(公告)号：US20110308789A1
公开(公告)日：2011-12-22
申请号：US13131219
申请日：2009-10-22
申请人： Hong Zhang , Richard A. Rosthal
发明人： Hong Zhang , Richard A. Rosthal
CPC分类号： G01V3/28 , E21B47/122
摘要： Methods and related systems are described for making measurements of an electromagnetic field in a subterranean formation that has been induced by a current loop. The current loop uses one or more steel wellbore casings as electrodes. Receiver arrays are positioned either at surface/seafloor, in the same, or in nearby wells. In the most general case, the receivers are tri-axial. A section of metallic casing in one well can be used as a current source and the electromagnetic field at surface can be measured using an array of EM receivers placed at a range of distances from the wellbore.
摘要翻译： 描述了用于测量已经由电流回路感应的地下地层中的电磁场的方法和相关系统。 电流环使用一个或多个钢井筒壳作为电极。 接收器阵列位于表面/海底，相同或附近的井中。 在最普遍的情况下，接收器是三轴的。 一个井中的金属壳体的一部分可以用作电流源，并且可以使用放置在距离井筒的距离范围内的EM接收器的阵列来测量表面处的电磁场。
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