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    • 23. 发明申请
    • Tubing Pressure Balanced Operating System with Low Operating Pressure
    • 低工作压力的管道压力平衡操作系统
    • US20080314599A1
    • 2008-12-25
    • US11766254
    • 2007-06-21
    • Darren E. BaneDavid Z. Anderson
    • Darren E. BaneDavid Z. Anderson
    • E21B23/04E21B34/10
    • E21B34/10E21B23/04
    • A control system for a subsurface safety valve features a control line from the surface leading to one side of an operating piston. The operating piston is exposed to tubing pressure and is in pressure balance from tubing pressure. The opposite end of the operating piston is exposed to a chamber in the housing of the subsurface safety valve and that chamber is open through a port to the surrounding annulus. The operating piston is coupled to the flow tube and a power spring so that pressure in the control line shifts the operating piston and the flow tube against the power spring to rotate the flapper open. Provisions for fail closed mode if certain seals fail are also made though a passage extending from between seals near the upper end of the operating piston to the chamber open to the annulus.
    • 用于地下安全阀的控制系统具有从通向操作活塞的一侧的表面的控制线。 操作活塞暴露于管道压力,并处于管道压力的压力平衡。 操作活塞的另一端暴露在地下安全阀壳体内的一个腔室中,该腔室通过一个端口打开到周围的环空。 操作活塞联接到流动管和动力弹簧,使得控制线中的压力将操作活塞和流动管相对动力弹簧移动以使挡板开启。 如果通过从操作活塞的上端附近的密封件延伸到通向环形空间的腔室之间的通道也进行了某些密封件失效的设定。
    • 29. 发明授权
    • Lock open and control system access apparatus for a downhole safety valve
    • 锁定井下安全阀的开启和控制系统进入装置
    • US07717185B2
    • 2010-05-18
    • US12172658
    • 2008-07-14
    • David Z. AndersonDarren E. BaneAllen P. Carney
    • David Z. AndersonDarren E. BaneAllen P. Carney
    • E21B34/06
    • E21B34/10E21B34/102
    • A combination penetration tool for access to the control system of a subsurface safety valve also has a lockout for the flapper that operates by latching into a nipple profile near its upper end as a series of collet fingers pass through a sleeve that is held in the locked position on the valve housing. One or more dogs on the collet fingers line up with the flapper already pushed open by the advancing collet fingers to push the flapper further back. A second series of dogs get past the sleeve after moving through it. With a jar up force the second series of dogs overcomes a lock on the sleeve and shifts the sleeve to overlap the open flapper and allow the lock ring that moves with the sleeve to latch into the housing. The second series of dogs is sheared off but retained by the tool for removal from the well. The penetrator portion of the tool is a known device that preferably works by jarring up.
    • 用于进入地下安全阀的控制系统的组合穿透工具还具有用于挡板的锁定件,其通过在其上端附近锁定到接头轮廓中而操作,因为一系列夹头指状物通过保持在锁定中的套筒 阀体上的位置。 夹头上的一只或多只狗与挡板对齐,已经被推进的夹头手指推开,以将挡板推回到后面。 第二系列的狗在穿过它后穿过袖子。 借助于加强力,第二系列的狗克服了套筒上的锁定并使套筒移动以与开启的挡板重叠,并允许与套筒一起移动的锁定环锁定到壳体中。 第二系列的狗被剪掉,但被工具保留,以从井中取出。 该工具的穿透部分是一种已知的装置,其优选通过振动起作用。
    • 30. 发明授权
    • Tubing pressure insensitive control system
    • 管道压力不敏感控制系统
    • US07591317B2
    • 2009-09-22
    • US11595607
    • 2006-11-09
    • Darren E. BaneDavid Z. AndersonAaron T. Jackson
    • Darren E. BaneDavid Z. AndersonAaron T. Jackson
    • E21B34/10
    • E21B34/10
    • A control system can be used with a single control line to a subsurface safety valve. The operating piston is exposed to the flow tube between two blocks with near identical seals to make the piston insensitive to tubing pressure. A control system seal is carried by the piston in the upper block and a passage between the control system seal and the tubing pressure seal in the upper block communicates to a compressible fluid reservoir in the lower block that is also isolated from tubing pressure by a tubing pressure seal. Movement of the piston compresses the fluid in the reservoir. The reservoir can also include a spring to return the piston and the flow tube to a position to close the valve. A redundant system can be actuated if the primary system fails.
    • 控制系统可以与单个控制线一起使用到地下安全阀。 操作活塞在具有近似相同密封件的两个块之间暴露于流动管,使得活塞对管道压力不敏感。 控制系统密封由上部块中的活塞承载,并且控制系统密封件和上部块中的管道压力密封件之间的通道与下部块体中的可压缩流体储存器连通,其也通过管道与管道压力隔离 压力密封。 活塞的运动压缩储存器中的流体。 储存器还可以包括弹簧以将活塞和流管返回到关闭阀的位置。 如果主系统发生故障,则可以启动冗余系统。