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    WELLBORE CIRCULATION TOOL AND METHOD
    1.
    发明申请
    WELLBORE CIRCULATION TOOL AND METHOD 有权
    井筒循环工具及方法

    公开(公告)号：US20130014956A1

    公开(公告)日：2013-01-17

    申请号：US13180354

    申请日：2011-07-11

    申请人： JOHN HUGHES ,  RYAN DWAINE RASMUSSEN ,  DELTON ANDREW CAMPBELL

    发明人： JOHN HUGHES ,  RYAN DWAINE RASMUSSEN ,  DELTON ANDREW CAMPBELL

    IPC分类号： E21B34/06 ,  E21B33/12 ,  E21B34/00

    CPC分类号： E21B23/006 ,  E21B34/12 ,  E21B34/14 ,  E21B43/26

    摘要： A circulation valve includes: an outer tubular sleeve telescopically mounted at its end over a tubular mandrel; a fluid passage between sleeve and the mandrel, the fluid passage providing fluid communication between the inner bore of the valve and its outer surface; a dual knife seal assembly to control flow out of the fluid flow path through the fluid passage, the dual knife seal assembly including a first annular knife seal edge and land that seal up when the sleeve and mandrel are in a fully axially compressed position and a second annular knife seal edge and land that seal up when the sleeve and mandrel are pulled into a fully in tension position; and, a J-slot position indexing mechanism including a slot and a key to guide movement of the sleeve and the mandrel between the fully in tension position and the fully compressed position. The circulation valve is employed in a wellbore treatment assembly and methods.

    摘要翻译： 循环阀包括：外管状套筒，其端部可伸缩地安装在管状心轴上; 在套筒和心轴之间的流体通道，流体通道提供阀的内孔与其外表面之间的流体连通; 双刀密封组件，用于控制流过流体通道的流体流动路径，双刀密封组件包括第一环形刀片密封边缘和当套筒和心轴处于完全轴向压缩位置时密封的平台， 第二环形刀密封边缘和当套筒和心轴被拉入完全张紧位置时密封的平台; 以及J槽位置分度机构，其包括槽和键，以引导套筒和心轴在完全张紧位置和完全压缩位置之间的运动。 循环阀用于井筒处理组件和方法。

    LOW PRESSURE-SET PACKER
    4.
    发明申请
    LOW PRESSURE-SET PACKER 有权
    低压套装

    公开(公告)号：US20080011471A1

    公开(公告)日：2008-01-17

    申请号：US11563438

    申请日：2006-11-27

    申请人： JOHN HUGHES ,  JOHN THOMAS

    发明人： JOHN HUGHES ,  JOHN THOMAS

    IPC分类号： E21B23/04 ,  E21B23/06 ,  E21B33/128

    CPC分类号： E21B23/06 ,  E21B33/1285 ,  E21B33/1295

    摘要： A packer tool for use in a wellbore having a bottomhole pressure p, the tool comprising: a mandrel assembly; a stabilizer on the mandrel assembly, for releasably engaging the wellbore; a packing element in an annular recess having a floor and two facing walls, the annular recess being transversely compressible into a compressed position and disposed about the mandrel assembly; and a piston assembly for driving compression of the packing element annular recess, the piston assembly having a plurality of pistons connected to act in tandem, the pistons having a total piston face surface area a such that an application of pressure of p′ to the piston assembly generates a force f greater than p.

    摘要翻译： 一种用于具有井底压力p的井眼中的封隔器工具，所述工具包括：心轴组件; 在心轴组件上的稳定器，用于可释放地接合井筒; 环形凹槽中的包装元件具有底板和两个相对的壁，所述环形凹部可横向压缩成压缩位置并围绕心轴组件设置; 以及用于驱动所述包装元件环形凹部的压缩的活塞组件，所述活塞组件具有连接成串联起作用的多个活塞，所述活塞具有总活塞面表面积a，使得将p'的压力施加到所述活塞 装配产生大于p的力f。