SHIELDING DEVICE FOR IMPROVING DYNAMIC RANGE OF ELECTROMAGNETIC MEASUREMENTS
    14.
    发明申请
    SHIELDING DEVICE FOR IMPROVING DYNAMIC RANGE OF ELECTROMAGNETIC MEASUREMENTS 审中-公开
    用于改善电磁测量动态范围的屏蔽装置

    公开(公告)号:US20160252644A1

    公开(公告)日:2016-09-01

    申请号:US15030716

    申请日:2014-08-20

    IPC分类号: G01V3/28 E21B47/12 E21B49/00

    摘要: The disclosure concerns a device for obtaining electromagnetic measurements in a wellbore. In one implementation, the device includes an electromagnetic source carried by the device and a metamaterial arranged to cover a portion of the device in order to divert electromagnetic waves from the source around the covered portion of the device. In one version, the electromagnetic radiation from the source impinging on the portion of the device covered by the metamaterial, and on the electronics carried by the devices that are covered by the metamaterial is reduced. Depending on the implementation, the electromagnetic source may be an antenna, such as a coil antenna. Also, the antenna coil may be wrapped circumferentially around the tool.

    摘要翻译: 本公开涉及用于在井眼中获得电磁测量的装置。 在一个实施方式中,该装置包括由该装置承载的电磁源和被设置成覆盖该装置的一部分的超材料,以便绕该装置的被覆盖部分的源头转移电磁波。 在一个版本中,来自冲击在被超材料覆盖的器件的部分上的源的电磁辐射以及由超材料覆盖的器件承载的电子元件被减少。 根据实施方案,电磁源可以是诸如线圈天线的天线。 此外,天线线圈可以围绕工具周向缠绕。

    Methods and Systems for Monitoring Spontaneous Potentials in Downhole Environments
    15.
    发明申请
    Methods and Systems for Monitoring Spontaneous Potentials in Downhole Environments 审中-公开
    监测井下环境自发电位的方法与系统

    公开(公告)号:US20160178785A1

    公开(公告)日:2016-06-23

    申请号:US14911228

    申请日:2013-12-20

    IPC分类号: G01V3/26 E21B47/00 E21B49/08

    摘要: A spontaneous (SP) monitoring system includes a plurality of EM field sensors positioned in a downhole environment. The SP monitoring system also includes a processing unit in communication with the plurality of EM field sensors. The processing unit determines SP data for the downhole environment using a multi-frequency SP model and EM field measurements collected by the plurality of EM field sensors. The processing unit performs an inversion process based at least in part on the SP data to obtain a model of subsurface fluid.

    摘要翻译: 自发(SP)监测系统包括位于井下环境中的多个EM场传感器。 SP监视系统还包括与多个EM场传感器通信的处理单元。 处理单元使用由多个EM场传感器收集的多频SP模型和EM场测量来确定井下环境的SP数据。 处理单元至少部分地基于SP数据执行反转处理,以获得地下流体的模型。

    IMAGING OF WELLBORE PIPES USING DEEP AZIMUTHAL ANTENNAS
    16.
    发明申请
    IMAGING OF WELLBORE PIPES USING DEEP AZIMUTHAL ANTENNAS 有权
    使用深层AZIMUTHAL天线形成井筒管

    公开(公告)号:US20160168974A1

    公开(公告)日:2016-06-16

    申请号:US14889327

    申请日:2015-07-02

    发明人: Burkay DONDERICI

    IPC分类号: E21B47/00 G01N27/90

    摘要: A pipe inspection tool includes a body having a central axis, and one or more azimuthal antenna arrays operatively coupled to the body. Each azimuthal antenna array includes a plurality of antenna coils arranged circumferentially about the central axis and comprising an azimuthal array of z-coils or an azimuthal array of separated x-coils and separated y-coils. The separated x-coils are oriented in a first direction with respect to the central axis, the separated y-coils are oriented in a second direction with respect to the central axis, and the z-coils are oriented in a third direction with respect to the central axis. The second direction is orthogonal to the first direction, and the third direction is orthogonal to both the first and second directions.

    摘要翻译: 管道检查工具包括具有中心轴线的主体和可操作地联接到主体的一个或多个方位天线阵列。 每个方位角天线阵列包括围绕中心轴线周向布置的多个天线线圈,并且包括Z形线圈的方位阵列或分离的x线圈和分离的y线圈的方位阵列。 分离的x线圈相对于中心轴线在第一方向上定向,所分离的y线圈相对于中心轴线在第二方向上定向,并且z线圈相对于 中心轴。 第二方向与第一方向正交,第三方向与第一方向和第二方向正交。

    SYSTEMS AND METHODS OF PROVIDING COMPENSATED GEOLOGICAL MEASUREMENTS
    17.
    发明申请
    SYSTEMS AND METHODS OF PROVIDING COMPENSATED GEOLOGICAL MEASUREMENTS 审中-公开
    提供补偿地质测量的系统和方法

    公开(公告)号:US20160154133A1

    公开(公告)日:2016-06-02

    申请号:US14347037

    申请日:2013-05-07

    IPC分类号: G01V1/50 G01V3/38 G01V3/30

    摘要: Disclosed are systems and method for providing compensated measurements for more accurate downhole measurement data. One measurement system includes at least two transmitters and at least two receivers disposed within at least one borehole formed in a subterranean formation, and a data acquisition system communicably coupled to the at least two transmitters and the at least two receivers and configured to activate the at least two transmitters and process time-lapsed signals received from the at least two receivers in order to generate compensated signals that minimize or eliminate multiplicative effects.

    摘要翻译: 公开了用于为更精确的井下测量数据提供补偿测量的系统和方法。 一个测量系统包括至少两个发射器和至少两个接收器,所述至少两个接收器设置在形成在地层中的至少一个钻孔中,以及数据采集系统,可通信地耦合到所述至少两个发射器和所述至少两个接收器, 至少两个发射机和处理从至少两个接收机接收的经过时间的信号,以产生最小化或消除乘法效应的补偿信号。

    BUCKING TO IMPROVE PERMANENT RESERVOIR MONITORING SENSITIVITY

    公开(公告)号:US20180259672A1

    公开(公告)日:2018-09-13

    申请号:US15759806

    申请日:2015-12-17

    摘要: A well monitoring system includes a plurality of transmitter coils coupled to an exterior of a casing positioned within a wellbore, wherein one or more first transmitter coils are positioned at a first location and one or more second transmitter coils are positioned at a second location axially offset from the first location. At least one receiver coil is coupled to the exterior of the casing and positioned at the second location. A power source is communicably coupled to the one or more first and second transmitter coils. The one or more first transmitter coils generates a magnetic field detectable by the at least one receiver coil, and the one or more second transmitter coils generates a bucking signal that minimizes a direct coupling between the one or more first transmitter coils and the at least one receiver coil.