BACK UP DIRECTIONAL AND INCLINATION SENSORS AND METHOD OF OPERATING SAME
    4.
    发明申请
    BACK UP DIRECTIONAL AND INCLINATION SENSORS AND METHOD OF OPERATING SAME 有权
    备份方向和内置传感器及其操作方法

    公开(公告)号:US20150345283A1

    公开(公告)日:2015-12-03

    申请号:US14649507

    申请日:2013-12-06

    Abstract: The embodiments described herein generally relate to a method and apparatus for providing a back up system of Directional and Inclination (D&I) information to be gathered and transmitted in addition to primary D&I sensors currently employed in industry. A downhole probe assembly including primary sensors, back up sensors and a controller is disclosed. The primary sensors comprise primary accelerometers and primary magnetometers configured to gather information relating to each of orthogonal axes X, Y and Z. The back up sensors comprise back up accelerometers configured to gather information relating to each of orthogonal axes X, Y and Z, the back up accelerometers being solid state accelerometers. The controller is in electrical communication with the primary sensors and the back up sensors. The controller is configured to receive and process information from the primary sensors and the back up sensors so that information from the back up accelerometers can be used when one or more of the primary accelerometers fail, which may allow drilling operations to continue despite such failure.

    Abstract translation: 本文描述的实施例通常涉及用于提供除了工业中当前使用的主要D&I传感器之外要收集和发送的定向和倾斜(D&I)信息的备份系统的方法和装置。 公开了一种包括主传感器,备用传感器和控制器的井下探头组件。 主传感器包括主加速度计和主磁力计,其被配置为收集与正交轴X,Y和Z中的每一个相关的信息。备用传感器包括配置为收集与正交轴X,Y和Z中的每一个相关的信息的备份加速度计, 备份加速度计是固态加速度计。 控制器与主传感器和备用传感器电气通信。 控制器被配置为从主传感器和备用传感器接收和处理信息,使得当一个或多个主加速度计失效时可以使用来自后备加速度计的信息,这可能允许钻井操作继续,尽管这样的故障。

    TRANSMITTING DATA ACROSS ELECTRICALLY INSULATING GAPS IN A DRILL STRING

    公开(公告)号:US20180187545A1

    公开(公告)日:2018-07-05

    申请号:US15900243

    申请日:2018-02-20

    CPC classification number: E21B47/122 E21B17/003

    Abstract: A range of apparatus and methods for providing local and long range data telemetry within a wellbore is described. These apparatus and methods may be combined in a wide variety of ways. In some embodiments data is transmitted across a gap in a drill string using signals of a higher frequency for which an electrical impedance of the gap or of a filter connected across the gap is low. Low-frequency EM telemetry signals may be applied across the gap. The gap and any filter connected across the gap present a high impedance to the low-frequency EM telemetry signals. The described technology may be applied for transferring sensor readings between downhole electrical packages. In some embodiments sensors are electrically connected across electrically insulating gaps in the drill string.

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