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    • 1. 发明申请
    • HYDRAULIC ACTUATION OF A DOWNHOLE TOOL ASSEMBLY
    • 卧式工具组件的液压启动
    • WO2011146836A2
    • 2011-11-24
    • PCT/US2011/037340
    • 2011-05-20
    • SMITH INTERNATIONAL, INC.WU, JianHU, JianbingTERRACINA, Dwayne P.RAY, Tommy G.
    • WU, JianHU, JianbingTERRACINA, Dwayne P.RAY, Tommy G.
    • E21B34/06E21B7/28E21B10/32E21B23/006
    • A downhole tool assembly is configured for repeated and selective hydraulic actuation and deactuation. A piston assembly is configured to reciprocate axially in a downhole tool body. The piston assembly reciprocates between a first axial position and second and third axial positions that axially oppose the first position. The downhole tool is actuated when the piston assembly is in the third axial position and deactuated when the piston assembly is in either of the first or second axial positions. A spring member biases the piston assembly towards the first axial position while drilling fluid pressure in the tool body urges the piston assembly towards the second and third axial positions. Downhole tool actuation and deactuation may be controlled from the surface, for example, via cycling the drilling fluid flow rate.
    • 井下工具组件被配置为用于重复和选择性的液压致动和停用。 活塞组件构造成在井下工具体中轴向往复运动。 活塞组件在轴向相对于第一位置的第一轴向位置和第二和第三轴向位置之间往复运动。 当活塞组件处于第三轴向位置时,井下工具被致动,并且当活塞组件处于第一或第二轴向位置中的任一个时,井下工具被致动。 弹簧构件朝向第一轴向位置偏压活塞组件,同时在工具体内钻出流体压力,迫使活塞组件朝向第二和第三轴向位置。 例如,可以通过循环钻井液流量从表面控制井下工具致动和停用。
    • 4. 发明申请
    • HYDRAULIC ACTUATION OF A DOWNHOLE TOOL ASSEMBLY
    • 水下工具组件的液压启动
    • WO2011146836A3
    • 2012-01-12
    • PCT/US2011037340
    • 2011-05-20
    • SMITH INTERNATIONALWU JIANHU JIANBINGTERRACINA DWAYNE PRAY TOMMY G
    • WU JIANHU JIANBINGTERRACINA DWAYNE PRAY TOMMY G
    • E21B10/30
    • E21B34/06E21B7/28E21B10/32E21B23/006
    • A downhole tool assembly is configured for repeated and selective hydraulic actuation and deactuation. A piston assembly is configured to reciprocate axially in a downhole tool body. The piston assembly reciprocates between a first axial position and second and third axial positions that axially oppose the first position. The downhole tool is actuated when the piston assembly is in the third axial position and deactuated when the piston assembly is in either of the first or second axial positions. A spring member biases the piston assembly towards the first axial position while drilling fluid pressure in the tool body urges the piston assembly towards the second and third axial positions. Downhole tool actuation and deactuation may be controlled from the surface, for example, via cycling the drilling fluid flow rate.
    • 井下工具组件被配置为用于重复和选择性的液压致动和停用。 活塞组件构造成在井下工具体中轴向往复运动。 活塞组件在轴向相对于第一位置的第一轴向位置和第二和第三轴向位置之间往复运动。 当活塞组件处于第三轴向位置时,井下工具被致动,并且当活塞组件处于第一或第二轴向位置时,井下工具被致动。 弹簧构件朝向第一轴向位置偏压活塞组件,同时在工具体内钻出流体压力,迫使活塞组件朝向第二和第三轴向位置。 例如,可以通过循环钻井液的流速从表面控制井下工具致动和停用。