Apparatus and method of detecting interfaces between well fluids
    4.
    发明申请
    Apparatus and method of detecting interfaces between well fluids 有权
    检测井液之间界面的装置和方法

    公开(公告)号:US20050034863A1

    公开(公告)日:2005-02-17

    申请号:US10939924

    申请日:2004-09-13

    摘要: An apparatus for use in circulating cement in a casing in a wellbore is described having a first component such as a sensor disposed on the casing and a second component such as a detectable device disposed at a fluid interface formed between the cement and a fluid. The sensor may be a sensor coil mounted on the perimeter of the lower end of the casing, while the detectable device may be a transponder capable of emitting Radio Frequency Identification signals to the sensor to signal its arrival at the lower end of the casing. The transponder may be encased in a protective covering. Also described is a method of cementing a casing utilizing a first component such as a sensor disposed on the casing and a second component such as a detectable device disposed in the cement.

    摘要翻译: 描述了一种用于在井筒中的壳体中循环水泥的装置,其具有第一部件,例如设置在壳体上的传感器,以及第二部件,例如设置在形成于水泥和流体之间的流体界面处的可检测装置。 传感器可以是安装在壳体的下端的周边上的传感器线圈,而可检测设备可以是能够向传感器发射射频识别信号的发射机应答器,以用信号通知其到达壳体的下端。 应答器可能被封装在保护盖中。 还描述了利用布置在壳体上的传感器等第一部件和布置在水泥中的可检测装置的第二部件固定壳体的方法。