公开(公告)号：US09354349B2

公开(公告)日：2016-05-31

申请号：US14005198

申请日：2011-11-18

申请人： Shanjun Li ,  Michael S. Bittar ,  Dagang Wu

发明人： Shanjun Li ,  Michael S. Bittar ,  Dagang Wu

IPC分类号： G01V1/40 ,  G01V3/38 ,  E21B47/022 ,  G01V3/20 ,  E21B47/09

CPC分类号： G01V3/38 ,  E21B47/02216 ,  E21B47/0905 ,  G01V3/20

摘要： Various embodiments include apparatus and methods to detect and locate conductive structures below the earth's surface. Tools can be configured with receiving sensors arranged to receive signals generated from a conductive structure in response to a current flowing on the conductive structure. Magnetic-related values from the signals can be processed, relative to the tool, to determine a position of a conductive structure from which the signal was generated in response to current flowing on the conductive structure. Additional apparatus, systems, and methods are disclosed.

公开(公告)号：US20140244174A1

公开(公告)日：2014-08-28

申请号：US14005198

申请日：2011-11-18

申请人： Shanjun Li ,  Michael S. Bittar ,  Dagang Wu

发明人： Shanjun Li ,  Michael S. Bittar ,  Dagang Wu

IPC分类号： G01V3/38 ,  G01V3/20

CPC分类号： G01V3/38 ,  E21B47/02216 ,  E21B47/0905 ,  G01V3/20

摘要： Various embodiments include apparatus and methods to detect and locate conductive structures below the earth's surface. Tools can be configured with receiving sensors arranged to receive signals generated from a conductive structure in response to a current flowing on the conductive structure. Magnetic-related values from the signals can be processed, relative to the tool, to determine a position of a conductive structure from which the signal was generated in response to current flowing on the conductive structure. Additional apparatus, systems, and methods are disclosed.

摘要翻译： 各种实施例包括用于检测和定位在地球表面下方的导电结构的装置和方法。 工具可以配置有接收传感器，其布置成响应于在导电结构上流动的电流接收从导电结构产生的信号。 可以相对于工具处理来自信号的磁相关值，以响应于在导电结构上流动的电流来确定产生信号的导电结构的位置。 公开了附加装置，系统和方法。

公开(公告)号：US09115569B2

公开(公告)日：2015-08-25

申请号：US13549679

申请日：2012-07-16

申请人： Yumei Tang ,  Michael S. Bittar ,  Shanjun Li

发明人： Yumei Tang ,  Michael S. Bittar ,  Shanjun Li

IPC分类号： E21B47/022 ,  G01V3/26

CPC分类号： E21B47/02216 ,  E21B47/022 ,  G01V3/26

摘要： Methods and apparatus for detecting nearby conductors such as pipes, well casing, etc., from within a borehole. A nearby casing string can be detected by transmitting an electromagnetic signal from a transmit antenna on a downhole logging tool and measuring a parallel response signal with a first receive antenna parallel to the transmit antenna and a perpendicular response signal with a second receive antenna perpendicular to the transmit antenna, both receive antennas on the downhole logging tool. As the tool rotates, the transmitting and measuring are repeated to determine the azimuthal dependence of the parallel and perpendicular response signals. The azimuthal dependence is analyzed to determine a diagonal component of said azimuthal dependence for each response signal. Distance to a casing string can be estimated using the diagonal component of each response signal. At least one of the antennas is preferably tilted.

摘要翻译： 从钻孔内检测附近导体如管道，井套等的方法和装置。 可以通过从井下测井工具上的发射天线发射电磁信号并且与平行于发射天线的第一接收天线测量并行响应信号和垂直于垂直于发射天线的第二接收天线的垂直响应信号来检测附近的套管柱 发射天线，两个接收天线在井下测井工具上。 当工具旋转时，重复发射和测量以确定平行和垂直响应信号的方位依赖性。 分析方位依赖性以确定每个响应信号的所述方位依赖性的对角分量。 可以使用每个响应信号的对角分量估计与套管柱的距离。 天线中的至少一个优选地是倾斜的。

公开(公告)号：US10175378B2

公开(公告)日：2019-01-08

申请号：US14403455

申请日：2012-07-13

申请人： Shanjun Li ,  Luis Emilio San Martin ,  Michael S. Bittar ,  Jing Li

发明人： Shanjun Li ,  Luis Emilio San Martin ,  Michael S. Bittar ,  Jing Li

IPC分类号： G01V3/20 ,  G01V3/24

摘要： Various embodiments include apparatus and methods to make resistivity measurements in a borehole using tool having an array of electrodes operable to provide focused currents, measure corresponding voltages, and measure corresponding voltage differences to determine resistivity. Tools can be configured to operate at a plurality of modes when voltage differences at some frequencies are effectively unreadable. Additional apparatus, systems, and methods are disclosed.

公开(公告)号：US09239402B2

公开(公告)日：2016-01-19

申请号：US14370188

申请日：2012-01-03

申请人： Shanjun Li ,  Michael S. Bittar

发明人： Shanjun Li ,  Michael S. Bittar

IPC分类号： G01V3/02 ,  G01V3/20 ,  G01V3/24 ,  G01V99/00

CPC分类号： G01V3/20 ,  G01V3/24 ,  G01V99/00

摘要： Various embodiments include apparatus and methods to make resistivity measurements in a borehole using tool having an array of electrodes operable to provide focused currents and measure corresponding voltages to determine resistivity. Tools can be configured with a main electrode having a number of spaced apart electrodes within the main electrode such that the spaced apart electrodes are arranged azimuthally with respect to an axis of the tool. Generation of current from the spaced apart electrodes and control of current from additional electrodes on each side of the main electrode can provide for focused measurements. Additional apparatus, systems, and methods are disclosed.

摘要翻译： 各种实施例包括使用具有可操作以提供聚焦电流并测量相应电压以确定电阻率的电极阵列的工具在井眼中进行电阻率测量的装置和方法。 工具可以配置有在主电极内具有多个间隔开的电极的主电极，使得间隔开的电极相对于工具的轴线方位布置。 从间隔开的电极产生电流并且控制来自主电极每侧的附加电极的电流可以提供聚焦测量。 公开了附加装置，系统和方法。

公开(公告)号：US08844648B2

公开(公告)日：2014-09-30

申请号：US13116069

申请日：2011-05-26

申请人： Michael S. Bittar ,  Jing Li ,  Shanjun Li ,  Michael D. Finke

发明人： Michael S. Bittar ,  Jing Li ,  Shanjun Li ,  Michael D. Finke

IPC分类号： E21B47/02 ,  E21B47/022

CPC分类号： E21B47/022

摘要： Nearby conductors such as pipes, well casing, etc., are detectable from within a borehole filled with an oil-based fluid. At least some method embodiments provide a current flow between axially-spaced conductive bridges on a drillstring. The current flow disperses into the surrounding formation and causes a secondary current flow in the nearby conductor. The magnetic field from the secondary current flow can be detected using one or more azimuthally-sensitive antennas. Direction and distance estimates are obtainable from the azimuthally-sensitive measurements, and can be used as the basis for steering the drillstring relative to the distant conductor. Possible techniques for providing current flow in the drillstring include imposing a voltage across an insulated gap or using a toroid around the drillstring to induce the current flow.

摘要翻译： 诸如管道，井套管等的附近的导体可以从填充有油基流体的钻孔内检测。 至少一些方法实施例提供了在钻柱上的轴向隔开的导电桥之间的电流。 电流流向周围的地层，并在附近的导体中产生二次电流。 可以使用一个或多个方位角敏感天线来检测来自次级电流的磁场。 方向和距离估计可以从方位角敏感测量中获得，并且可以用作相对于远距离导体转向钻柱的基础。 在钻柱中提供电流的可能技术包括在绝缘间隙上施加电压，或者在钻柱周围使用环形线来引起电流。

公开(公告)号：US20130234718A1

公开(公告)日：2013-09-12

申请号：US13884034

申请日：2011-11-02

申请人： Shanjun Li ,  Luis E. San Martin ,  Michael S. Bittar ,  Jing Li

发明人： Shanjun Li ,  Luis E. San Martin ,  Michael S. Bittar ,  Jing Li

IPC分类号： G01V3/20

CPC分类号： G01V3/20 ,  E21B47/102 ,  E21B49/00 ,  G01V3/24 ,  G01V3/28 ,  G01V2200/16

摘要： Multi-array laterolog tool systems and methods acquire a set of array measurements sufficient to provide laterolog tool measurements of differing array sizes. Such systems and method offer multiple depths of investigation while offering greater measurement stability in borehole environments having high resistivity contrasts. In at least some system embodiments, a wireline or LWD tool body has a center electrode positioned between multiple pairs of guard electrodes and a pair of return electrodes. The tool's electronics provide a current from the center electrode to the pair of return electrodes and currents from each pair of guard electrodes to the pair of return electrodes. Each of the currents may be distinguishable by frequency or distinguishable by some other means. This novel arrangement of currents provides a complete set of measurements that enables one tool to simultaneously emulate a whole range of laterolog tools.

摘要翻译： 多阵列后验工具系统和方法获取足够的阵列测量集，以提供不同阵列大小的后者工具测量。 这种系统和方法提供多个调查深度，同时在具有高电阻率对比度的钻孔环境中提供更大的测量稳定性。 在至少一些系统实施例中，有线或LWD工具主体具有位于多对保护电极和一对返回电极之间的中心电极。 工具的电子器件提供从中心电极到一对返回电极的电流以及从每对保护电极到一对返回电极的电流。 每个电流可以通过频率区分或通过某种其他方式可区分。 这种新颖的电流布置提供了一整套测量，使一个工具能够同时模拟一整套后期工具。

公开(公告)号：US20130046474A1

公开(公告)日：2013-02-21

申请号：US13695455

申请日：2010-07-16

申请人： Michael S. Bittar ,  Yumei Tang ,  Shanjun Li

发明人： Michael S. Bittar ,  Yumei Tang ,  Shanjun Li

IPC分类号： G01V3/30 ,  G06F19/00

CPC分类号： G01V3/10 ,  G01V3/28 ,  G01V2210/626

摘要： Various resistivity logging tools, systems, and methods are disclosed. At least some tool embodiments include transmit and receive antennas that measure the electromagnetic response of the formation, at least one of which is tilted to provide a directional sensitivity. A processor converts the response (measured as a function of the tool's rotation angle) into a set of inversion parameters, which are then used to estimate the anisotropic properties of the formation. The set of inversion parameters includes at least one parameter based on an antipodal sum of the response signal, and may further include parameters based on an antipodal difference and an average of the signal response. Antipodal sum and difference values at different rotational orientations can be included in the set of inversion parameters, and they may be normalized to reduce environmental effects. Some tool embodiments collect the relevant formation measurements using parallel or perpendicular tilted antennas.

摘要翻译： 公开了各种电阻率测井工具，系统和方法。 至少一些工具实施例包括测量地层的电磁响应的发射和接收天线，其中至少一个被倾斜以提供方向灵敏度。 处理器将响应（作为工具的旋转角度的函数测量）转换为一组反演参数，然后将其用于估计地层的各向异性特性。 所述反演参数集合包括基于响应信号的对称和的至少一个参数，并且还可以包括基于对数差异和信号响应的平均值的参数。 反演参数组中可以包含不同旋转方向的对称和和差值，并且它们可以归一化以减少环境影响。 一些工具实施例使用平行或垂直倾斜的天线收集相关的地层测量。

公开(公告)号：US09529113B2

公开(公告)日：2016-12-27

申请号：US13814406

申请日：2010-08-31

申请人： Michael S. Bittar ,  Shanjun Li ,  Yumei Tang

发明人： Michael S. Bittar ,  Shanjun Li ,  Yumei Tang

IPC分类号： G01V1/00 ,  G01V3/00 ,  G01V3/38 ,  G01V3/30 ,  G01V3/12 ,  G01V3/17 ,  G01V3/28 ,  G01V1/40

CPC分类号： G01V3/38 ,  G01V1/001 ,  G01V1/40 ,  G01V3/12 ,  G01V3/17 ,  G01V3/28 ,  G01V3/30

摘要： Various embodiments include apparatus and methods of operation with respect to well logging. Apparatus and methods include a tool having an arrangement of transmitters and receivers that are operated at different positions downhole and a processing unit to process collected signals such that the arrangement of transmitters and receivers provides measurements that mimic operation of a different arrangement of transmitters and receivers. Additional apparatus, systems, and methods are disclosed.

摘要翻译： 各种实施例包括关于测井的装置和操作方法。 设备和方法包括具有在井下不同位置操作的发射器和接收器的布置的工具以及处理收集的信号的处理单元，使得发射器和接收器的布置提供模拟发射器和接收器的不同布置的操作的测量。 公开了附加装置，系统和方法。

公开(公告)号：US20150177406A1

公开(公告)日：2015-06-25

申请号：US14403455

申请日：2012-07-13

申请人： Shanjun Li ,  Luis Emilio San Martin ,  Michael S. Bittar ,  Jing Li

发明人： Shanjun Li ,  Luis Emilio San Martin ,  Michael S. Bittar ,  Jing Li

IPC分类号： G01V3/20

CPC分类号： G01V3/20 ,  G01V3/24

摘要： Various embodiments include apparatus and methods to make resistivity measurements in a borehole using tool having an array of electrodes operable to provide focused currents, measure corresponding voltages, and measure corresponding voltage differences to determine resistivity. Tools can be configured to operate at a plurality of modes when voltage differences at some frequencies are effectively unreadable. Additional apparatus, systems, and methods are disclosed.

摘要翻译： 各种实施例包括使用具有可操作以提供聚焦电流，测量相应电压并测量对应的电压差以确定电阻率的电极阵列的工具在井眼中进行电阻率测量的装置和方法。 当某些频率的电压差实际上不可读时，工具可被配置为以多种模式操作。 公开了附加装置，系统和方法。