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11. 发明授权

US07432716B2 Method for compensating dielectric attenuation in downhole galvanic measurements 有权
标题翻译：补偿井下电流测量中介质衰减的方法
公开(公告)号：US07432716B2
公开(公告)日：2008-10-07
申请号：US11601961
申请日：2006-11-20
申请人： Stanislav W. Forgang , Gregory B. Itskovich , Randy Gold , Homero Castillo
发明人： Stanislav W. Forgang , Gregory B. Itskovich , Randy Gold , Homero Castillo
IPC分类号： G01V3/00
CPC分类号： G01V3/24
摘要： A logging tool used in a borehole having non-conductive mud. The tool includes a known inductance in series with an electrode. The quality factor of a circuit that includes the electrode, the inductance and the earth formation is indicative of the resistivity of the formation. The quality factor may be determined using either a plurality of signals or by measuring a transient response.
摘要翻译：用于具有非导电泥浆的钻孔中的测井工具。该工具包括与电极串联的已知电感。包括电极，电感和地球形成的电路的品质因子表示地层的电阻率。质量因子可以使用多个信号或通过测量瞬态响应来确定。

12. 发明授权

US08203344B2 Method and apparatus for resistivity imaging in boreholes with an antenna and two spaced apart electrodes 有权
标题翻译：在具有天线和两个间隔开的电极的钻孔中进行电阻率成像的方法和装置
公开(公告)号：US08203344B2
公开(公告)日：2012-06-19
申请号：US11521016
申请日：2006-09-14
申请人： Randy Gold , Rashid W. Khokhar , Alexandre N. Bespalov , Leonty A. Tabarovsky , Gregory B. Itskovich
发明人： Randy Gold , Rashid W. Khokhar , Alexandre N. Bespalov , Leonty A. Tabarovsky , Gregory B. Itskovich
IPC分类号： G01V3/00
CPC分类号： G01V3/24
摘要： An apparatus, method and computer-readable medium for evaluating an earth formation are disclosed. The apparatus includes at least one coil on a logging tool conveyed in a borehole in the earth formation. Passage of a current through the coil induces an electrical current in the earth formation. At least two electrodes associated with the logging tool and in proximity to a wall of the borehole have a potential difference in response to the induced electrical current that is indicative of a property of the earth formation. The at least one coil may be mounted on a mandrel of a downhole assembly. The electrodes may be positioned on a first pad extendable from a mandrel of the downhole assembly.
摘要翻译：公开了一种用于评估地层的装置，方法和计算机可读介质。该装置包括在地层中的钻孔中输送的测井工具上的至少一个线圈。通过线圈的电流在地层中引起电流。与测井工具相关联并且靠近钻孔壁的至少两个电极具有响应于感应电流的电位差，其表示地层的性质。至少一个线圈可以安装在井下组件的心轴上。电极可以定位在可从井下组件的心轴延伸的第一垫上。

13. 发明申请

US20100023268A1 Multi-resolution Borehole Resistivity Imaging 有权
标题翻译：多分辨率井眼电阻率成像
公开(公告)号：US20100023268A1
公开(公告)日：2010-01-28
申请号：US12423535
申请日：2009-04-14
申请人： Randy Gold , Alexandre N. Bespalov , Gregory B. Itskovich
发明人： Randy Gold , Alexandre N. Bespalov , Gregory B. Itskovich
IPC分类号： E21B47/00 , G01V3/08
CPC分类号： G01V3/24
摘要： An apparatus, method and computer-readable medium for obtaining a resistivity image of an earth formation. The apparatus includes a downhole assembly configured to be conveyed in a borehole penetrating the earth formation; a plurality of sensor electrodes on the downhole assembly, at least one of the electrodes having a different area than another of the electrodes; and at least one processor configured to: (i) process measurements using each of the sensor electrodes; (ii) process a subset of the measurements substantially unaffected by the different capacitances to produce an image of the borehole wall; and (iii) record the image on a suitable medium.
摘要翻译：一种用于获得地层电阻率图像的装置，方法和计算机可读介质。该装置包括井下组件，其构造成在穿过地层的钻孔中传送; 在井下组件上的多个传感器电极，至少一个电极具有与另一电极不同的面积; 以及至少一个处理器，其被配置为：（i）使用每个所述传感器电极处理测量; （ii）处理基本上不受不同电容影响的测量的子集，以产生井壁的图像; 和（iii）将图像记录在合适的介质上。

14. 发明授权

US07394258B2 High resolution resistivity earth imager 有权
标题翻译：高分辨率电阻率地球成像仪
公开(公告)号：US07394258B2
公开(公告)日：2008-07-01
申请号：US11203829
申请日：2005-08-15
申请人： Gregory B. Itskovich , Alexandre N. Bespalov , Randy Gold
发明人： Gregory B. Itskovich , Alexandre N. Bespalov , Randy Gold
IPC分类号： G01V3/00 , G01V3/02
CPC分类号： G01V3/24
摘要： Impedance measurements made by a galvanic resistivity tool in a borehole in an earth formation are corrected by a factor that depends on the mud conductivity and the mud dielectric constant. Standoff measurements are not necessary.
摘要翻译：通过电阻电阻率工具在地层钻孔中进行的阻抗测量由取决于泥浆电导率和泥浆介电常数的因素来校正。间隔测量不是必需的。

15. 发明授权

US07365545B2 Two-axial pad formation resistivity imager 有权
标题翻译：双轴焊垫形成电阻率成像仪
公开(公告)号：US07365545B2
公开(公告)日：2008-04-29
申请号：US11321132
申请日：2005-12-29
申请人： Gregory B. Itskovich , Randy Gold , Alexandre N. Bespalov , Stanislav Forgang
发明人： Gregory B. Itskovich , Randy Gold , Alexandre N. Bespalov , Stanislav Forgang
IPC分类号： G01V3/20
CPC分类号： G01V3/24
摘要： A resistivity imaging device injects currents in two orthogonal directions using two pairs of return electrodes and performing impedance measurements of the buttons placed between the returns.
摘要翻译：电阻率成像装置使用两对返回电极在两个正交方向上注入电流，并对放置在返回点之间的按钮执行阻抗测量。

16. 发明授权

US08174266B2 Multi-resolution borehole resistivity imaging 有权
标题翻译：多分辨率井眼电阻率成像
公开(公告)号：US08174266B2
公开(公告)日：2012-05-08
申请号：US12178306
申请日：2008-07-23
申请人： Randy Gold , Alexandre N. Bespalov , Gregory B. Itskovich
发明人： Randy Gold , Alexandre N. Bespalov , Gregory B. Itskovich
IPC分类号： G01V3/02 , G01V3/18
CPC分类号： G01V3/24
摘要： An apparatus, method and computer-readable medium for obtaining a resistivity image of an earth formation. The apparatus includes a downhole assembly configured to be conveyed in a borehole penetrating the earth formation; a plurality of sensor electrodes on the downhole assembly, each of the plurality of sensor electrodes having a different capacitance to a wall of the borehole; and at least one processor configured to: (i) process measurements using each of the sensor electrodes; (ii) process a subset of the measurements substantially unaffected by the different capacitances to produce an image of the borehole wall; and (iii) record the image on a suitable medium.
摘要翻译：一种用于获得地层电阻率图像的装置，方法和计算机可读介质。该装置包括井下组件，其构造成在穿过地层的钻孔中传送; 所述井下组件中的多个传感器电极，所述多个传感器电极中的每一个与所述钻孔的壁具有不同的电容; 以及至少一个处理器，其被配置为：（i）使用每个所述传感器电极处理测量; （ii）处理基本上不受不同电容影响的测量的子集，以产生井壁的图像; 和（iii）将图像记录在合适的介质上。

17. 发明授权

US09709692B2 Method and apparatus for borehole wall resistivity imaging with full circumferential coverage 有权
公开(公告)号：US09709692B2
公开(公告)日：2017-07-18
申请号：US12288171
申请日：2008-10-17
申请人： Gregory B. Itskovich , Alexandre N. Bespalov , Farhat A. Shaikh , Peter John Nolan
发明人： Gregory B. Itskovich , Alexandre N. Bespalov , Farhat A. Shaikh , Peter John Nolan
IPC分类号： G01V3/20
CPC分类号： G01V3/20
摘要： A logging tool for performing resistivity measurements on the sidewall of a borehole in an earth formation is provided with a circumferential series of evenly-spaced measurement electrodes providing complete circumferential coverage of resistivity measurements. In one embodiment, the measurement electrodes are carried on a conductive pad circumferentially surrounding an elongate mandrel or tubular. The conductive pad is held at a voltage adapted to focus measurement current into the sidewall of the borehole. Preferably, the pad has dimensions relative to the measurement electrodes and a standoff distance between the measurement electrodes and said borehole wall to effectively focus the measurement current into the borehole wall. In accordance with one aspect of the invention, the measurement electrodes are spaced apart by a distance that is less than the width of each measurement electrode, thereby ensuring full circumferential resolution.

18. 发明授权

US07689363B2 Dual standoff resistivity imaging instrument, methods and computer program products 有权
标题翻译：双重对位电阻率成像仪器，方法和计算机程序产品
公开(公告)号：US07689363B2
公开(公告)日：2010-03-30
申请号：US11748696
申请日：2007-05-15
申请人： Gregory B. Itskovich , Stanislav Wilhelm Forgang , Alexandre N. Bespalov
发明人： Gregory B. Itskovich , Stanislav Wilhelm Forgang , Alexandre N. Bespalov
IPC分类号： G01V3/20 , G01V3/00
CPC分类号： G01V3/20
摘要： A resistivity imaging apparatus includes: a first sensor electrode disposed on an electrode pad and positioned at a first standoff; a second sensor electrode disposed on the electrode pad and adjacent the first sensor electrode, the second sensor electrode positioned at a second standoff; and a return electrode disposed on the electrode pad, wherein the sensor electrodes and the return electrode are configured for injecting current into a formation and receiving a signal from the formation. Other embodiments, methods and computer program products are disclosed.
摘要翻译：电阻率成像装置包括：第一传感器电极，设置在电极焊盘上并定位在第一间隔处; 第二传感器电极，设置在所述电极焊盘上并与所述第一传感器电极相邻，所述第二传感器电极位于第二间隔处; 以及设置在所述电极焊盘上的返回电极，其中所述传感器电极和所述返回电极被配置为将电流注入地层并接收来自所述地层的信号。公开了其它实施例，方法和计算机程序产品。

19. 发明申请

US20120209527A1 CONCENTRIC BUTTONS OF DIFFERENT SIZES FOR IMAGING AND STANDOFF CORRECTION 有权
标题翻译：用于成像和标准校正的不同尺寸的浓度按钮
公开(公告)号：US20120209527A1
公开(公告)日：2012-08-16
申请号：US13212624
申请日：2011-08-18
申请人： Matthias Gorek , Gregory B. Itskovich , Alexandre N. Bespalov , Frank Daschner , Reinhard Knöchel , Assol Kavtorina
发明人： Matthias Gorek , Gregory B. Itskovich , Alexandre N. Bespalov , Frank Daschner , Reinhard Knöchel , Assol Kavtorina
IPC分类号： G06F19/00 , G01V3/18
CPC分类号： G01V3/24
摘要： Disclosed is a method of estimating a property of an earth formation penetrated by a borehole. The method includes conveying a carrier through the borehole and performing a plurality of electrical measurements on the formation using a sensor disposed at the carrier and having a plurality of electrodes disposed in a concentric arrangement wherein a standoff distance between the sensor and a wall of the borehole has an influence on each electrical measurement in the plurality of electrical measurements. The method further includes determining an impedance for each electrical measurement in the plurality of electrical measurements and inputting the determined impedances into an artificial neural network implemented by a processor. The artificial neural network outputs the property wherein the outputted property compensates for the influence of sensor standoff distance on each electrical measurement in the plurality of electrical measurements.
摘要翻译：公开了一种估计由钻孔穿透的地层的性质的方法。该方法包括通过钻孔传送载体并使用设置在载体处的传感器在地层上执行多个电测量并且具有以同心布置设置的多个电极，其中传感器与钻孔壁之间的间隔距离对多个电测量中的每个电测量具有影响。该方法还包括确定多个电测量中的每个电测量的阻抗，并将确定的阻抗输入到由处理器实现的人造神经网络中。人造神经网络输出其中输出特性补偿传感器间隔距离对多个电测量中的每个电测量的影响的性质。

20. 发明申请

US20100097068A1 Method and apparatus for borehole wall resisitivity imaging with full circumferential coverage 有权
标题翻译：具有全周期覆盖的井壁电阻成像方法和装置
公开(公告)号：US20100097068A1
公开(公告)日：2010-04-22
申请号：US12288171
申请日：2008-10-17
申请人： Gregory B. Itskovich , Alexandre N. Bespalov , Farhat A. Shaikh , Peter John Nolan
发明人： Gregory B. Itskovich , Alexandre N. Bespalov , Farhat A. Shaikh , Peter John Nolan
IPC分类号： G01V3/20
CPC分类号： G01V3/20
摘要： A logging tool for performing resistivity measurements on the sidewall of a borehole in an earth formation is provided with a circumferential series of evenly-spaced measurement electrodes providing complete circumferential coverage of resistivity measurements. In one embodiment, the measurement electrodes are carried on a conductive pad circumferentially surrounding an elongate mandrel or tubular. The conductive pad is held at a voltage adapted to focus measurement current into the sidewall of the borehole. Preferably, the pad has dimensions relative to the measurement electrodes and a standoff distance between the measurement electrodes and said borehole wall to effectively focus the measurement current into the borehole wall. In accordance with one aspect of the invention, the measurement electrodes are spaced apart by a distance that is less than the width of each measurement electrode, thereby ensuring full circumferential resolution.
摘要翻译：用于在地层中的钻孔的侧壁上执行电阻率测量的测井工具设置有周向系列的均匀间隔的测量电极，其提供电阻率测量的完整的圆周覆盖。在一个实施例中，测量电极承载在周向围绕细长心轴或管状物的导电垫上。导电垫被保持在适于将测量电流聚焦到钻孔的侧壁中的电压上。优选地，垫具有相对于测量电极的尺寸和测量电极与所述钻孔壁之间的间隔距离，以有效地将测量电流聚焦到钻孔壁中。根据本发明的一个方面，测量电极间隔开小于每个测量电极的宽度的距离，从而确保全周分辨率。

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