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    Seal assembly for subsurface safety valve
    1.
    发明公开
    Seal assembly for subsurface safety valve 审中-公开
    对于井下安全阀密封装置

    公开(公告)号：EP2719856A3

    公开(公告)日：2016-07-27

    申请号：EP13188451.2

    申请日：2013-10-14

    Applicant: Weatherford Technology Holdings, LLC

    Inventor： Smith, Roddie

    IPC: E21B34/10 ,  E21B33/128

    CPC classification number: E21B33/128 ,  E21B33/1285 ,  E21B34/10 ,  E21B34/105

    Abstract: A seal assembly for use in a tubular includes a mandrel (124), upper and lower compressible seal members (111, 113) disposed around the mandrel, first and second upper piston assemblies (102, 108) in contact with a first end of the seal member, and first and second lower piston assemblies (104, 106) in contact with a second end of the seal member. The piston assemblies include a piston head (107A, 109A), and a piston extension sealing member (107B, 109B) integrally formed with the piston head, and extending at least partially between the mandrel and the compressible seal member. The compressible seal members form a seal with the tubular when at least one of the piston assemblies is urged toward the compressible seal member.

    Signal operated isolation valve
    2.
    发明公开
    Signal operated isolation valve 有权
    信号传感器Absperrventil

    公开(公告)号：EP2770160A3

    公开(公告)日：2015-04-22

    申请号：EP14168885.3

    申请日：2011-09-20

    Applicant: Weatherford Technology Holdings, LLC

    Inventor： Noske, Joe ,  Smith, Roddie ,  Smith, Paul, L. ,  Bailey, Thomas F. ,  McDowell, Christopher, L. ,  Tilton, Frederick T.

    IPC: E21B34/08 ,  E21B34/14 ,  E21B43/10 ,  E21B47/12 ,  E21B21/00 ,  E21B34/00

    CPC classification number: E21B34/06 ,  E21B34/063 ,  E21B34/08 ,  E21B34/14 ,  E21B43/103 ,  E21B47/12 ,  E21B2021/006 ,  E21B2034/005

    Abstract: A method of drilling a wellbore includes drilling the wellbore through a formation by injecting drilling fluid through a drill string and rotating a drill bit. The drill string includes a shifting tool, a receiver in communication with the shifting tool, and the drill bit. The method further includes retrieving the drill string from the wellbore through a casing string until the shifting tool reaches an actuator. The casing string includes an isolation valve in an open position and the actuator. The method further includes sending a wireless instruction signal to the receiver. The shifting tool engages the actuator in response to the receiver receiving the instruction signal. The method further includes operating the actuator using the engaged shifting tool, thereby closing the isolation valve and isolating the formation from an upper portion of the wellbore.

    Abstract translation: 钻井井的方法包括通过将钻井液喷射穿过钻柱并旋转钻头来钻井井眼。 钻柱包括换档工具，与换档工具连通的接收器和钻头。 该方法还包括通过套管柱从钻井中取出钻柱，直到换档工具到达致动器。 套管柱包括处于打开位置的隔离阀和致动器。 该方法还包括向接收机发送无线指令信号。 响应于接收器接收到指令信号，换档工具接合致动器。 该方法还包括使用所接合的换档工具来操作致动器，从而关闭隔离阀并将地层与井眼的上部隔离。

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