Downhole tool and method for use of the same
    1.
    发明公开
    Downhole tool and method for use of the same 失效
    井下工具及其使用方法

    公开(公告)号:EP1653040A1

    公开(公告)日:2006-05-03

    申请号:EP06075054.4

    申请日:1997-05-19

    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) 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).

    摘要翻译: 井下工具(38)包括具有流体通路(84)的壳体(42),具有内部容积(50)的心轴(44),心轴(44)可滑动地设置在壳体(42)内,并且 心轴(44)具有相对于壳体(42)的多个轴向位置。 心轴(44)响应于内部容积(50)内的流体压力可滑动地操作,使得心轴(44)循环通过多个位置。 牵开器套筒(64)与壳体(42)和心轴(44)可操作地相关联,用于接合心轴(44)并相对于壳体(42)可滑动地推动心轴(44)。 回缩器套筒(64)响应于内部容积(50)内的流体压力而可滑动地操作。 围绕壳体(42)可滑动地设置的密封组件(72),密封组件(72)包括浮动活塞,壳体(42)和浮动活塞在其间限定腔室(84)。 腔室(84)与壳体(42)的流体通路(84)连通,使得内部容积(50)内的流体压力进入腔室(84)并可滑动地促使密封组件(72)伸展 密封组件(72)。

    Method and apparatus for loading fluid into subterranean formations
    6.
    发明公开
    Method and apparatus for loading fluid into subterranean formations 失效
    用于液体引入到地下岩层的方法和设备

    公开(公告)号:EP0859126A3

    公开(公告)日:2002-09-25

    申请号:EP98300706.3

    申请日:1998-01-30

    CPC分类号: E21B43/114 E21B43/26

    摘要: Fluid is loaded into a subterranean formation (14) using an intensifier (34) comprising a power section (36) and a pump section (38). The power section includes a housing (42), a sleeve (44) slidably disposed within the housing (42), a piston (48) defining an interior volume (50), the piston being slidably disposed within the sleeve (44) and within the housing (42) such that a fluid pressure within the interior volume (50) causes the sleeve (44) to oscillate relative to the housing (42) and causes the piston (48) to oscillate relative to the sleeve (44) and the housing (42). The pump section (38) is operably associated with the piston such that the fluid pressure from the interior volume (50) is intensified in the pump section (38) and injected into the formation (14) as the piston (48) oscillates relative to the housing (42).

    Apparatus positionable in a subterranean well, comprising releasably secured members
    7.
    发明公开
    Apparatus positionable in a subterranean well, comprising releasably secured members 审中-公开
    在地下井可调整的设备,用可拆卸地固定元件

    公开(公告)号:EP0952303A3

    公开(公告)日:2002-02-06

    申请号:EP99303161.6

    申请日:1999-04-23

    IPC分类号: E21B34/06 E21B34/10

    CPC分类号: E21B34/102 E21B34/063

    摘要: Apparatus operatively positionable in a subterranean well includes a releasable lock (34) including first, second and third members (84,86,78) releasably secured against displacement relative to each other, a force applied to the first member (84) being transmitted to the second member (86) when the third member (78) is disposed in a first position, and relative displacement being permitted between the first and second members (84,86) when the third member (78) is disposed in a second position. The releasable lock prevents operation of a device such as a ball valve (12) until a predetermined fluid pressure is applied to the exterior of the apparatus.

    Formation evaluation testing apparatus and method
    8.
    发明公开
    Formation evaluation testing apparatus and method 审中-公开
    系统和装置用于接地的检查和周围地层

    公开(公告)号:EP0911485A2

    公开(公告)日:1999-04-28

    申请号:EP98308114.2

    申请日:1998-10-06

    发明人: Skinner, Neal G.

    IPC分类号: E21B49/00 E21B47/10

    CPC分类号: E21B33/1243 E21B49/081

    摘要: A method of displacing fluid between a formation (112) intersected by a wellbore (114) and an apparatus (10) disposed within the wellbore (114). The apparatus (10) includes axially spaced apart and radially outwardly extendable seal elements (92,94). The method comprises the steps of extending the seal elements (92,94) into sealing engagement with the formation (112), and compressing a volume (116) of fluid between the seal elements (92,94).

    摘要翻译: 由(114)内设置一个井眼(114)和设备(10)的井孔相交的地层(112)之间移动流体的方法。 的装置(10)包括轴向间隔开的并且径向外伸的密封元件(92,94)。 该方法包括延伸的密封元件(92,94)与所述形成(112)的密封接合和压缩流体的密封元件(92,94)之间的体积(116)的步骤。

    Apparatus for formation testing
    9.
    发明公开
    Apparatus for formation testing 失效
    Vorrichtung zum Formationstesten

    公开(公告)号:EP0825328A2

    公开(公告)日:1998-02-25

    申请号:EP97306271.4

    申请日:1997-08-19

    IPC分类号: E21B34/10 E21B49/08

    摘要: A formation testing system provides the ability to reliably and repeatedly perform tests, such as drawdown tests, on closely spaced apart formations intersected by subterranean wellbores without relying on absolute fluid pressure for actuation thereof. The formation testing system is configured for normal drilling operations or for fluid sampling operations by applying preselected differential pressures to the system. The formation testing system includes opposing pistons (68,74) which cooperate to open and close a valve.

    摘要翻译: 地层测试系统提供了在地下井眼相交的紧密间隔的地层上可靠而且重复地执行测试,例如压降测试的能力,而不依赖于绝对流体压力来致动它们。 地层测试系统被配置为正常钻井操作或通过对系统施加预选的压差来进行流体采样操作。 地层测试系统包括配合以打开和关闭阀的相对的活塞(68,74)。