公开(公告)号：US08614578B2

公开(公告)日：2013-12-24

申请号：US12641898

申请日：2009-12-18

申请人： Guozhong Gao ,  H. Frank Morrison ,  Hong Zhang ,  Richard A. Rosthal ,  David Alumbaugh ,  Cyrille Levesque

发明人： Guozhong Gao ,  H. Frank Morrison ,  Hong Zhang ,  Richard A. Rosthal ,  David Alumbaugh ,  Cyrille Levesque

IPC分类号： G01V3/10 ,  G01V3/18

CPC分类号： G01V3/28

摘要： The present disclosure relates to determining the attenuation of an electromagnetic signal passing through a conductive material. An antenna is provided and placed in relatively close proximity to the conductive material. An alternating current is passed through the antenna and the impedance of the antenna is measured. The attenuation is determined using the measured impedance. A single frequency measurement may be made, or multiple measurements using different frequencies may be made. Grouped parameters based on properties of the material and the frequency of the current are used to relate the coil impedance to the attenuation. A current frequency for which the ratio of the antenna's resistive part of the impedance to the angular frequency of the current is substantially insensitive to at least one of the parameters is preferred.

摘要翻译： 本公开涉及确定通过导电材料的电磁信号的衰减。 提供天线并将其放置在相对靠近导电材料的位置。 交流电流通过天线，测量天线的阻抗。 使用测量的阻抗确定衰减。 可以进行单个频率测量，或者可以进行使用不同频率的多个测量。 基于材料性质和电流频率的分组参数用于将线圈阻抗与衰减相关联。 阻抗的电阻部分与电流的角频率的比率对于至少一个参数基本上不敏感的当前频率是优选的。

公开(公告)号：US20100321023A1

公开(公告)日：2010-12-23

申请号：US12641898

申请日：2009-12-18

申请人： Guozhong Gao ,  H. Frank Morrison ,  Hong Zhang ,  Richard A. Rosthal ,  David Alumbaugh ,  Cyrille Levesque

发明人： Guozhong Gao ,  H. Frank Morrison ,  Hong Zhang ,  Richard A. Rosthal ,  David Alumbaugh ,  Cyrille Levesque

IPC分类号： G01V3/10

CPC分类号： G01V3/28

摘要： The present disclosure relates to determining the attenuation of an electromagnetic signal passing through a conductive material. An antenna is provided and placed in relatively close proximity to the conductive material. An alternating current is passed through the antenna and the impedance of the antenna is measured. The attenuation is determined using the measured impedance. A single frequency measurement may be made, or multiple measurements using different frequencies may be made. Grouped parameters based on properties of the material and the frequency of the current are used to relate the coil impedance to the attenuation. A current frequency for which the ratio of the antenna's resistive part of the impedance to the angular frequency of the current is substantially insensitive to at least one of the parameters is preferred.

摘要翻译： 本公开涉及确定通过导电材料的电磁信号的衰减。 提供天线并将其放置在相对靠近导电材料的位置。 交流电流通过天线，测量天线的阻抗。 使用测量的阻抗确定衰减。 可以进行单个频率测量，或者可以进行使用不同频率的多个测量。 基于材料性质和电流频率的分组参数用于将线圈阻抗与衰减相关联。 阻抗的电阻部分与电流的角频率的比率对于至少一个参数基本上不敏感的当前频率是优选的。

公开(公告)号：US08332191B2

公开(公告)日：2012-12-11

申请号：US12641994

申请日：2009-12-18

申请人： Richard A. Rosthal ,  Hong Zhang ,  Cyrille Levesque ,  Guozhong Gao ,  H. Frank Morrison ,  David Alumbaugh

发明人： Richard A. Rosthal ,  Hong Zhang ,  Cyrille Levesque ,  Guozhong Gao ,  H. Frank Morrison ,  David Alumbaugh

IPC分类号： G06F17/50 ,  G06F7/60 ,  G06G7/48 ,  G01F3/00 ,  G01V1/40 ,  G01V3/08

CPC分类号： G01V3/28

摘要： The present disclosure relates to determining attenuation factors relating to an electromagnetic signal passing through, a conductive material seen by a real sensor. A sensor is provided and disposed proximate to the material. An alternating current is passed through the sensor and the impedance of the sensor is measured. The impedance of an ideal coil is obtained from the measured impedance using electromagnetic modeling combined with a circuit analysis of the coil impedance, and the attenuation factors for the real coil in straight or feedback mode are determined by electromagnetic modeling of casing attenuation factors and impedance of an ideal coil combined with equivalent circuit modeling of the sensor transfer functions. The attenuation factors seen by the real sensor may be determined in real-time or post-survey. The material may be magnetic or non-magnetic.

摘要翻译： 本公开涉及确定与通过真实传感器所看到的导电材料通过的电磁信号有关的衰减因子。 传感器被设置并靠近材料设置。 交流电流通过传感器，测量传感器的阻抗。 理想线圈的阻抗通过使用电磁建模与线圈阻抗的电路分析结合的测量阻抗获得，并且直线或反馈模式中的实线圈的衰减系数由壳体衰减因数和阻抗的电磁建模确定 理想的线圈结合传感器传递函数的等效电路建模。 真实传感器所看到的衰减因子可以在实时或后期测量中确定。 该材料可以是磁性或非磁性的。

公开(公告)号：US20110012620A1

公开(公告)日：2011-01-20

申请号：US12641994

申请日：2009-12-18

申请人： Richard A. Rosthal ,  Hong Zhang ,  Cyrille Levesque ,  Guozhong Gao ,  H. Frank Morrison ,  David Alumbaugh

发明人： Richard A. Rosthal ,  Hong Zhang ,  Cyrille Levesque ,  Guozhong Gao ,  H. Frank Morrison ,  David Alumbaugh

IPC分类号： G01R27/28

CPC分类号： G01V3/28

摘要： The present disclosure relates to determining attenuation factors relating to an electromagnetic signal passing through, a conductive material seen by a real sensor. A sensor is provided and disposed proximate to the material. An alternating current is passed through the sensor and the impedance of the sensor is measured. The impedance of an ideal coil is obtained from the measured impedance using electromagnetic modeling combined with a circuit analysis of the coil impedance, and the attenuation factors for the real coil in straight or feedback mode are determined by electromagnetic modeling of casing attenuation factors and impedance of an ideal coil combined with equivalent circuit modeling of the sensor transfer functions. The attenuation factors seen by the real sensor may be determined in real-time or post-survey. The material may be magnetic or non-magnetic.

摘要翻译： 本公开涉及确定与通过真实传感器所看到的导电材料通过的电磁信号有关的衰减因子。 传感器被设置并靠近材料设置。 交流电流通过传感器，测量传感器的阻抗。 理想线圈的阻抗通过使用电磁建模与线圈阻抗的电路分析结合的测量阻抗获得，并且直线或反馈模式中的实线圈的衰减系数由壳体衰减因数和阻抗的电磁建模确定 理想的线圈结合传感器传递函数的等效电路建模。 真实传感器所看到的衰减因子可以在实时或后期测量中确定。 该材料可以是磁性或非磁性的。

公开(公告)号：US20090302852A1

公开(公告)日：2009-12-10

申请号：US12416411

申请日：2009-04-01

申请人： Cyrille Levesque ,  David Alumbaugh ,  Richard Rosthal ,  Hong Zhang

发明人： Cyrille Levesque ,  David Alumbaugh ,  Richard Rosthal ,  Hong Zhang

IPC分类号： G01V3/12

CPC分类号： G01V3/30

摘要： Methods and related systems are described for making an electromagnetic induction survey of a formation surrounding a cased section of a borehole. An electromagnetic transmitter and/or receiver are deployed into the cased section of the borehole. One or more additional devices are used to measure the properties of a conductive casing relating to conductivity, thickness and magnetic permeability. A casing coefficient is then calculated that can then be used for the processing of the deep-sensing induction measurements.

摘要翻译： 描述了用于对围绕钻孔的套管部分的地层进行电磁感应测量的方法和相关系统。 电磁发射器和/或接收器部署在钻孔的套管部分中。 一个或多个附加装置用于测量与导电性，厚度和磁导率有关的导电外壳的性能。 然后计算套管系数，然后可以将其用于深感应感应测量的处理。

公开(公告)号：US08704523B2

公开(公告)日：2014-04-22

申请号：US12416411

申请日：2009-04-01

申请人： Cyrille Levesque ,  David Alumbaugh ,  Richard Rosthal ,  Hong Zhang

发明人： Cyrille Levesque ,  David Alumbaugh ,  Richard Rosthal ,  Hong Zhang

IPC分类号： G01V3/10

CPC分类号： G01V3/30

摘要： Methods and related systems are described for making an electromagnetic induction survey of a formation surrounding a cased section of a borehole. An electromagnetic transmitter and/or receiver are deployed into the cased section of the borehole. One or more additional devices are used to measure the properties of a conductive casing relating to conductivity, thickness and magnetic permeability. A casing coefficient is then calculated that can then be used for the processing of the deep-sensing induction measurements.

摘要翻译： 描述了用于对围绕钻孔的套管部分的地层进行电磁感应测量的方法和相关系统。 电磁发射器和/或接收器部署在钻孔的套管部分中。 一个或多个附加装置用于测量与导电性，厚度和磁导率有关的导电外壳的性能。 然后计算套管系数，然后可以将其用于深感应感应测量的处理。

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

IPC分类号： E21B43/00 ,  G01V3/28 ,  E21B47/12

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。

公开(公告)号：US20090281731A1

公开(公告)日：2009-11-12

申请号：US12117089

申请日：2008-05-08

申请人： Frank Morrison ,  Edward Nichols ,  Richard A. Rosthal ,  Hong Zhang ,  Luis E. DePavia

发明人： Frank Morrison ,  Edward Nichols ,  Richard A. Rosthal ,  Hong Zhang ,  Luis E. DePavia

IPC分类号： G06F19/00 ,  G01V3/28

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。

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。

公开(公告)号：US20100308832A1

公开(公告)日：2010-12-09

申请号：US12758556

申请日：2010-04-12

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： G01V3/18

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。