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    • 4. 发明申请
    • TUBING PRESSURE INSENSITIVE PRESSURE COMPENSATED ACTUATOR FOR A DOWNHOLE TOOL AND METHOD
    • 一种井下工具用管压不敏感压力补偿执行器及其方法
    • WO2013025368A3
    • 2013-04-18
    • PCT/US2012049439
    • 2012-08-03
    • BAKER HUGHES INCSLOAN JAMES TGARR RONALD JMCDANIEL ROBERTHOPMANN DON ASCHNEIDER DAVID E
    • SLOAN JAMES TGARR RONALD JMCDANIEL ROBERTHOPMANN DON ASCHNEIDER DAVID E
    • E21B34/10
    • E21B34/10C25F3/02C25F7/00E21B34/101E21B34/14E21B2034/005
    • A tubing pressure insensitive, pressure compensated actuator system includes a housing having a bore therein. A force transmitter sealingly moveable within the bore. The force transmitter defining with the bore two fluid chambers. The two fluid chambers being in fluid communication with each other, one at each longitudinal end of the force transmitter. An activator in one or both of the two fluid chambers and operatively connected to the force transmitter. At least two seals sealingly positioned between the housing and the force transmitter. One of the seals disposed near one end of the force transmitter and another of the seals disposed near another end of the force transmitter. A separate compensation piston disposed in the housing so as to expose one end of the compensation piston to tubing pressure and to expose the other end of the compensation piston to a fluid volume including the fluid chambers. Also included is a method for reducing force requirements of an actuator.
    • 油管压力不敏感,压力补偿的致动器系统包括其中具有孔的壳体。 力传递器可在孔内密封地移动。 力传送器与钻孔两个流体腔室一起限定。 两个流体腔彼此流体连通,在力传递器的每个纵向端处一个。 在两个流体室中的一个或两个中的激活器,并且可操作地连接到力传递器。 至少有两个密封件位于壳体和力传感器之间。 其中一个密封件设置在力传递器的一端附近,另一个密封件设置在力传递器的另一端附近。 设置在壳体中的单独的补偿活塞,以便将补偿活塞的一端暴露于管道压力并且将补偿活塞的另一端暴露于包括流体室的流体体积。 还包括用于降低致动器的力需求的方法。