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    WELLBORE TOOL WITH INDEXING MECHANISM AND METHOD
    3.
    发明公开
    WELLBORE TOOL WITH INDEXING MECHANISM AND METHOD 审中-公开
    BOHRLOCHWERKZEUG MIT INDEXIERMECHANISMUS UND VERFAHRENDAFÜR

    公开(公告)号：EP2737163A1

    公开(公告)日：2014-06-04

    申请号：EP12819715.9

    申请日：2012-07-27

    申请人： Packers Plus Energy Services Inc.

    发明人： ARABSKY, Serhiy ,  FEHR, James ,  THEMIG, Daniel Jon

    IPC分类号： E21B23/00 ,  E21B33/122 ,  E21B34/14 ,  E21B34/16

    CPC分类号： E21B23/06 ,  E21B23/004 ,  E21B33/12 ,  E21B34/14 ,  E21B2034/007

    摘要： A wellbore tool, a wellbore fluid treatment string and a method with an indexing mechanism including a crown ratchet sleeve. The indexing mechanism can be shifted through one or more inactive positions before finally shifting into an active condition. The indexing mechanism is particularly useful with a plug that lands in a seat to impart an axially directed force on the mechanism before passing through the seat.

    摘要翻译： 井眼工具，井眼流体处理绳和具有包括冠部棘轮套筒的分度机构的方法。 分度机构可以在最终转换成活动状态之前移动通过一个或多个非活动位置。 分度机构对于插入座中以在穿过座椅之前在机构上施加轴向力的插塞特别有用。

    DOWNHOLE ACTUATING APPARATUS
    7.
    发明公开
    DOWNHOLE ACTUATING APPARATUS 有权
    控制装置的井具

    公开(公告)号：EP2553211A2

    公开(公告)日：2013-02-06

    申请号：EP11710549.4

    申请日：2011-03-10

    申请人： Petrowell Limited

    发明人： SMITH, Colin ,  PURKIS, Daniel George

    IPC分类号： E21B23/04 ,  E21B34/14 ,  E21B23/00 ,  E21B21/10

    CPC分类号： E21B23/004 ,  E21B21/103 ,  E21B23/006 ,  E21B23/04 ,  E21B34/14

    摘要： A mechanical counting device for actuating a plurality of output devices, the device comprising: linear indexing means adapted to count a plurality of actuating signals and to cause actuation of the output devices when a predetermined number of actuating signals for each output device has been received, wherein the mechanical counting device is adapted to cause actuation of a particular output device when a different predetermined number of actuating signals has been received such that the output devices are sequentially actuatable.

    Downhole tool and method for use of the same
    9.
    发明公开
    Downhole tool and method for use of the same 失效
    井下工具及使用方法

    公开(公告)号：EP0811747A3

    公开(公告)日：1999-11-17

    申请号：EP97303377.2

    申请日：1997-05-19

    申请人： Halliburton Energy Services, Inc.

    发明人： Ringgenberg, Paul D. ,  Schultz, Roger L. ,  Skinner, Neal G. ,  Waid, Margaret C. ,  Wendler, Curtis E. ,  Srubar, Robert W.

    IPC分类号： E21B23/00 ,  E21B34/10

    CPC分类号： E21B34/102 ,  E21B23/00 ,  E21B23/004 ,  E21B23/006 ,  E21B33/1285 ,  E21B41/00 ,  E21B49/081

    摘要： A downhole tool (38) comprises a housing (42) having a fluid passageway (84), a mandrel (44) having an interior volume (50), the mandrel (44) being slidably disposed within the housing (42), and the mandrel (44) having a plurality of axial positions relative to the housing (42). The mandrel (44) is slidably operated responsive to the fluid pressure within the interior volume (50) such that the mandrel (44) cycles through the plurality of positions. A retractor sleeve (64) is operably associated with the housing (42) and the mandrel (44) for engaging the mandrel (44) and slidably urging the mandrel (44) relative to the housing (42). The retractor sleeve (64) is slidably operated responsive to the fluid pressure within the interior volume (50). A seal assembly (72) is slidably disposed around the housing (42), the seal assembly (72) including a floating piston, the housing (42) and the floating piston defining a chamber (84) therebetween. The chamber (84) is in communication with the fluid passageway (84) of the housing (42) such that the fluid pressure within the interior volume (50) enters the chamber (84) and slidably urges the seal assembly (72) to stretch the seal assembly (72).