Articulating component of a downhole assembly, downhole steering assembly, and method of operating a downhole tool

    公开(公告)号:US09945190B2

    公开(公告)日:2018-04-17

    申请号:US14422841

    申请日:2013-08-20

    摘要: This invention relates to an articulating component (16) of a downhole assembly, and to a downhole steering assembly. There is provided an articulating component (16) having a first end (40) and a second end (42), the articulating component being adapted to transmit torque between the first end and the second end. The articulating component has a pivotable coupling (46) between its first and second ends and at least one control element for the pivotable coupling, the control element(s) having an active condition in which the pivotable coupling is substantially locked against pivoting movement, and an inactive condition in which the pivotable coupling is unlocked. In a downhole steering assembly the articulating component is located downhole of the steering component whereby to protect the steering component from unwanted vibrations generated downhole, or uphole of the steering component whereby to protect the steering component from unwanted vibrations generated uphole, or both.

    Monitoring tubing related equipment

    公开(公告)号:US09932815B2

    公开(公告)日:2018-04-03

    申请号:US14958231

    申请日:2015-12-03

    IPC分类号: E21B17/01 E21B47/00

    摘要: A technique facilitates monitoring of strain related effects along a tubing string, such as a tubing string extending from surface equipment toward a sea floor in a subsea well application. A monitoring module is employed to monitor the strain related effects and may have a tubular structure. The monitoring module also has a reduced wall thickness region constructed to concentrate strain in this reduced wall thickness region. Additionally, the monitoring module comprises at least one sensor mounted to the tubular structure in the reduced wall thickness region for monitoring of strains.

    Hybrid Downhole Acoustic Wireless Network
    10.
    发明申请

    公开(公告)号:US20180058208A1

    公开(公告)日:2018-03-01

    申请号:US15666299

    申请日:2017-08-01

    摘要: A hybrid electro-acoustic system for extending battery life of a downhole wireless telemetry system. The system includes a plurality of battery-powered intermediate communications nodes spaced along a downhole tubular body and attached to a wall of the tubular body, each of the battery-powered intermediate communications nodes configured to alternate between a sleep mode and an active mode and comprising: a power source comprising one or more batteries positioned within a housing; an electro-acoustic transducer and a transceiver, or a separate transmitter and receiver, positioned within the housing; and a topside communications node comprising: a transmitter and a power supply, the topside communications node structured and arranged to send an acoustic signal to one or more of the battery-powered intermediate communications nodes to place same in the active mode; wherein the power supply of the topside communications node is sufficient to enable communications directly with the intermediate communications node most remote from the surface and greater than the battery power provided to each of the intermediate communications nodes.