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    CONCENTRIC BUTTONS OF DIFFERENT SIZES FOR IMAGING AND STANDOFF CORRECTION
    6.
    发明申请
    CONCENTRIC BUTTONS OF DIFFERENT SIZES FOR IMAGING AND STANDOFF CORRECTION 有权
    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。

    Method and apparatus for resistivity imaging in boreholes with an antenna and two spaced apart electrodes
    7.
    发明授权
    Method and apparatus for resistivity imaging in boreholes with an antenna and two spaced apart electrodes 有权
    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。

    Method and apparatus for borehole wall resisitivity imaging with full circumferential coverage
    8.
    发明申请
    Method and apparatus for borehole wall resisitivity imaging with full circumferential coverage 有权
    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。

    Multi-resolution Borehole Resistivity Imaging
    9.
    发明申请
    Multi-resolution Borehole Resistivity Imaging 有权
    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。