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    • 4. 发明申请
    • Deep set safety valve
    • 深套安全阀
    • US20070068680A1
    • 2007-03-29
    • US11471053
    • 2006-06-20
    • James Vick
    • James Vick
    • E21B34/06
    • E21B34/066E21B23/04E21B34/10E21B34/101E21B34/14E21B2034/005F16K31/086
    • Apparatus and methods are provided for actuation of downhole tools. In one example, a deep set safety valve uses a magnetic coupling which permits a portion of the safety valve at control line pressure to be isolated from tubing string internal pressure, without requiring the use of a dynamic seal therebetween. A piston of the safety valve may be displaced in response to a differential between control line pressure and pressure in an annulus surrounding the tubing string, pressure in another control line, or pressure in the tubing string. Other types of well tools may benefit from actuation using principles of the invention.
    • 提供了用于致动井下工具的装置和方法。 在一个示例中,深度安全阀使用磁耦合,其允许安全阀的控制线压力的一部分与管柱内压隔离,而不需要在其间使用动态密封。 安全阀的活塞可以响应于控制管线压力和围绕管柱的环形空间中的压力,另一控制管线中的压力或管柱中的压力之间的差异而移位。 其他类型的井具可以受益于使用本发明的原理。
    • 5. 发明申请
    • Dual flapper safety valve
    • 双挡板安全阀
    • US20060162939A1
    • 2006-07-27
    • US11041393
    • 2005-01-24
    • James VickMichael VinzantJames Williams
    • James VickMichael VinzantJames Williams
    • E21B33/12E21B34/00
    • E21B34/10E21B2034/005
    • A valve system for use in a subterranean well, the valve having multiple closure devices, or a closure device and a device for protecting the closure device. A valve system includes a valve with a closure assembly. The closure assembly has a closure device and a protective device which alters fluid flow through a flow passage of the valve prior to closure of the closure device to thereby protect the closure device. A safety valve system includes a safety valve with a closure assembly having at least two closure devices arranged in series for controlling flow through a flow passage of the safety valve. Another safety valve system includes a safety valve assembly including multiple safety valves arranged in parallel. One portion of fluid from a fluid source flows through one of the safety valves, while another portion of fluid from the fluid source flows through another safety valve.
    • 一种用于地下井的阀系统,该阀具有多个封闭装置,或一封闭装置以及用于保护封闭装置的装置。 阀系统包括具有闭合组件的阀。 封闭组件具有闭合装置和保护装置,其在闭合装置关闭之前改变通过阀的流动通道的流体流动,从而保护封闭装置。 安全阀系统包括具有闭合组件的安全阀,所述闭合组件具有串联布置的至少两个闭合装置,用于控制通过安全阀的流动通道的流动。 另一个安全阀系统包括一个安全阀组件,它包括并联排列的多个安全阀。 来自流体源的流体的一部分流过安全阀之一,而来自流体源的另一部分流体流过另一安全阀。