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    • 22. 发明公开
    • TORQUE MEMBER
    • 扭力臂
    • EP2691597A1
    • 2014-02-05
    • EP12710967.6
    • 2012-03-29
    • Welltec A/S
    • HALLUNDBÆK, Jørgen
    • E21B23/14
    • E21B23/04E21B23/14E21B2023/008
    • The present invention relates to a downhole tool extending in a longitudinal direction, comprising a tool housing; an arm assembly movable between a retracted position and a projecting position in relation to the tool housing; an arm activation assembly arranged in the tool housing for moving the arm assembly between the retracted position and the projecting position, the arm activation assembly comprising a piston chamber extending in the longitudinal direction of the downhole tool, a piston member arranged inside the piston chamber and movable in the longitudinal direction of the downhole tool, and wherein the arm activation assembly further comprises a torque member comprising a first fluid channel for supplying hydraulic fluid from a pump to the arm assembly, the torque member being connected with the arm assembly and wherein the torque member is rotated by the movement of the piston member, whereby the arm assembly is moved. Furthermore, the invention relates to a tool string system comprising a plurality of downhole tools, wherein at least one of the downhole tools is a downhole tool according to the invention.
    • 25. 发明公开
    • Hydraulic assembly
    • 液压组装
    • EP2505772A1
    • 2012-10-03
    • EP11160551.5
    • 2011-03-30
    • Welltec A/S
    • Hallundbæk, Jørgen
    • E21B23/14
    • E21B23/04E21B23/14E21B2023/008
    • The present invention relates to a downhole tool, comprising a hydraulic assembly, an arm assembly movable between a retracted position and a projecting position in relation to the tool housing, the arm assembly comprising a wheel, an arm activation assembly for moving the arm assembly between the retracted position and the projecting position, and a hydraulic motor for rotating the wheel, thereby driving the downhole tool in a forward direction when the arm assembly is in the projecting position, wherein the downhole tool furthermore comprises a hydraulic pump unit for generating a first and a second pressurised fluid, the arm activation assembly being in fluid connection with the first pressurised fluid, and the hydraulic motor being in fluid connection with the second pressurised fluid, a hydraulic control block for controlling the pressure of the first pressurised fluid having a first pressure and controlling a second pressure of the second pressurised fluid, and the hydraulic control block comprising a first sequential valve for controlling a sequence of retraction of the arm assembly, a projection of the arm assembly and a rotation of the wheel.
    • 井下工具技术领域本发明涉及一种井下工具,其包括液压组件,在缩回位置和相对于工具壳体的伸出位置之间可移动的臂组件,所述臂组件包括轮子,用于在两个臂之间移动臂组件的臂启动组件 所述缩回位置和所述突出位置;以及液压马达,所述液压马达用于使所述车轮旋转,从而在所述臂组件处于所述突出位置时沿向前方向驱动所述井下工具,其中所述井下工具还包括液压泵单元, 以及第二加压流体,所述臂启动组件与所述第一加压流体流体连接,并且所述液压马达与所述第二加压流体流体连接;液压控制块,用于控制所述第一加压流体的压力,所述第一加压流体具有第一压力流体 压力并控制第二加压流体的第二压力,以及液压控制 包括用于控制所述臂组件的缩回顺序,所述臂组件的投影和所述车轮的旋转的第一顺序阀。
    • 26. 发明公开
    • Fail-safe spring
    • Ausfallsichere联邦
    • EP2505767A1
    • 2012-10-03
    • EP11160492.2
    • 2011-03-30
    • Welltec A/S
    • Hallundbaek, Jørgen
    • E21B23/14
    • E21B23/14E21B17/1021E21B23/04E21B2023/008
    • The present invention relates to a downhole tool extending in a longitudinal direction, comprising a tool housing; an arm assembly movable between a retracted position and a projecting position in relation to the tool housing; an arm activation assembly for moving the arm assembly between the retracted position and the projecting position; wherein the arm activation assembly comprises: a piston housing comprising a piston chamber, said piston chamber extending in the longitudinal direction of the downhole tool, a piston member arranged inside the piston chamber and engaged with the arm assembly to move the arm assembly between the retracted position and the projecting position, the piston member being movable in the longitudinal direction of the downhole tool and having a first piston face and a second piston face, the piston member being able to apply a projecting force on the arm assembly by applying a hydraulic pressure on the first piston face moving the piston in a first direction, and a spring member applying a spring force on the second piston face in a second direction opposite the first direction.
    • 本发明涉及一种沿纵向延伸的井下工具,其包括工具壳体; 臂组件可相对于工具壳体在缩回位置和突出位置之间移动; 用于在缩回位置和突出位置之间移动臂组件的臂激活组件; 其中所述臂致动组件包括:活塞壳体,其包括活塞室,所述活塞室沿所述井下工具的纵向方向延伸;活塞构件,其布置在所述活塞室内部并与所述臂组件接合以使所述臂组件在所述缩回 位置和突出位置,活塞构件可在井下工具的纵向方向上移动并且具有第一活塞面和第二活塞面,活塞构件能够通过施加液压来对臂组件施加突出力 在所述第一活塞面上沿着第一方向移动所述活塞;以及弹簧构件,其在与所述第一方向相反的第二方向上在所述第二活塞面上施加弹簧力。