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。