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    • 7. 发明申请
    • Dual Acting Rod Piston Control System
    • 双作用杆活塞控制系统
    • US20100314120A1
    • 2010-12-16
    • US12481740
    • 2009-06-10
    • Kevin R. PlunkettJohn D. Lindemann
    • Kevin R. PlunkettJohn D. Lindemann
    • E21B41/00E21B23/04E21B34/06E21B34/16
    • E21B34/10E21B2034/002
    • A downhole tool is hydraulically actuated through a control system that features rod piston(s) that are double acting. The piston bore is in a single housing component with an annular cavity that provides access to all piston bores to move the pistons in a first direction. The housing component that has the piston bore also includes an internal sleeve in a passage in the housing. A second control system connection communicates with a sealed annular space defined between the sleeve and the passage wall that holds the sleeve. A series of radial ports communicate from the annular space into each piston bore on the opposite side of each piston from the annular cavity so that each piston is double acting with a bore in a single housing component.
    • 井下工具通过控制系统液压致动,控制系统具有双作用的活塞杆。 活塞孔位于具有环形空腔的单个壳体部件中,该环形空腔提供进入所有活塞孔以沿第一方向移动活塞。 具有活塞孔的壳体部件还包括在壳体中的通道中的内部套筒。 第二控制系统连接与限定在套筒和保持套筒的通道壁之间的密封环形空间连通。 一系列径向端口从环形空间连通到每个活塞的与环形空腔相对的每个活塞孔,使得每个活塞与单个壳体部件中的孔双重作用。
    • 8. 发明授权
    • Dual acting rod piston control system
    • 双作用杆活塞控制系统
    • US08261835B2
    • 2012-09-11
    • US12481740
    • 2009-06-10
    • Kevin R. PlunkettJohn D. Lindemann
    • Kevin R. PlunkettJohn D. Lindemann
    • E21B34/10
    • E21B34/10E21B2034/002
    • A downhole tool is hydraulically actuated through a control system that features rod piston(s) that are double acting. The piston bore is in a single housing component with an annular cavity that provides access to all piston bores to move the pistons in a first direction. The housing component that has the piston bore also includes an internal sleeve in a passage in the housing. A second control system connection communicates with a sealed annular space defined between the sleeve and the passage wall that holds the sleeve. A series of radial ports communicate from the annular space into each piston bore on the opposite side of each piston from the annular cavity so that each piston is double acting with a bore in a single housing component.
    • 井下工具通过控制系统液压致动,控制系统具有双作用的活塞杆。 活塞孔位于具有环形空腔的单个壳体部件中,该环形空腔提供进入所有活塞孔以沿第一方向移动活塞。 具有活塞孔的壳体部件还包括在壳体中的通道中的内部套筒。 第二控制系统连接与限定在套筒和保持套筒的通道壁之间的密封环形空间连通。 一系列径向端口从环形空间连通到每个活塞的与环形空腔相对的每个活塞孔,使得每个活塞与单个壳体部件中的孔双重作用。