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公开(公告)号：US06854519B2
公开(公告)日：2005-02-15
申请号：US10138253
申请日：2002-05-03
CPC分类号： E21B34/10
摘要： A valve for use in a wellbore, the valve having a compensating secondary sealing system for misalignments that inevitably occur in sealing subsurface valves, particularly subsurface safety valves. A sealing system can include a dynamic sealing system and a static sealing system, where the static sealing system establishes one or more line contact surfaces. The line contact surfaces can be leading, in that the forward edge of the seal faces a corresponding engagement portion of the actuator. The actuator can include at least two spherical engagement portions where one of the spherical engagement portions engages resilient and non-resilient seals with line contact surfaces on a downstroke and the other spherical engagement portion engages resilient and non-resilient seals with line contact surfaces on an upstroke. Further, a bearing disposed above seals on a piston of the actuator assists in keeping contaminants out of the seal area of the piston.
摘要翻译： 一种用于井筒的阀，该阀具有用于未密封的补偿二次密封系统，其不可避免地发生在密封地下阀，特别是地下安全阀中。 密封系统可以包括动态密封系统和静态密封系统，其中静密封系统建立一个或多个线接触表面。 线接触表面可以引导，因为密封件的前边缘面对致动器的对应的接合部分。 致动器可以包括至少两个球形接合部分，其中一个球形接合部分与下行程线上的线接触表面接合弹性和非弹性密封，另一个球形接合部分与弹性和非弹性密封件接合， 上冲 此外，设置在致动器的活塞上方的密封件上的轴承有助于将污染物保持在活塞的密封区域之外。
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公开(公告)号：US20140034325A1
公开(公告)日：2014-02-06
申请号：US13566164
申请日：2012-08-03
IPC分类号： E21B34/06
CPC分类号： E21B34/10 , E21B34/12 , E21B2034/005
摘要： An integral multistage safety valve is designed to provide a second level of protection should a first stage fail. The valve may be used in oil and/or gas wells. The interior portion of the multiphase safety valve is designed so as to reduce turbulence and pressure loss through the valve when the valve is in an open position. The valves may be independently operable, or operable with a single control line. The multi-stage valve reduces the number of body joints required to construct two identical valves thereby reducing cost and potential leak paths and increasing reliability of the system.
摘要翻译： 一体化多级安全阀设计为在第一级失效时提供第二级保护。 阀可用于油和/或气井。 多相安全阀的内部设计成当阀处于打开位置时通过阀减小湍流和压力损失。 阀可以独立地操作，或者可以用单个控制线操作。 多级阀减少构造两个相同阀门所需的主体接头数量，从而降低成本和潜在的泄漏路径以及提高系统的可靠性。
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公开(公告)号：US09133688B2
公开(公告)日：2015-09-15
申请号：US13566164
申请日：2012-08-03
CPC分类号： E21B34/10 , E21B34/12 , E21B2034/005
摘要： An integral multistage safety valve is designed to provide a second level of protection should a first stage fail. The valve may be used in oil and/or gas wells. The interior portion of the multiphase safety valve is designed so as to reduce turbulence and pressure loss through the valve when the valve is in an open position. The valves may be independently operable, or operable with a single control line. The multi-stage valve reduces the number of body joints required to construct two identical valves thereby reducing cost and potential leak paths and increasing reliability of the system.
摘要翻译： 一体化多级安全阀设计为在第一级失效时提供第二级保护。 阀可用于油和/或气井。 多相安全阀的内部设计成当阀处于打开位置时通过阀减小湍流和压力损失。 阀可以独立地操作，或者可以用单个控制线操作。 多级阀减少构造两个相同阀门所需的主体接头数量，从而降低成本和潜在的泄漏路径以及提高系统的可靠性。
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公开(公告)号：US06851477B2
公开(公告)日：2005-02-08
申请号：US10292898
申请日：2002-11-12
CPC分类号： E21B34/10 , E21B2034/005
摘要： A subsurface safety valve for controlling fluid flow in a well bore. In one embodiment, the subsurface safety valve includes a tubular member having a longitudinal bore extending therethrough, a curved flapper removably connected to the tubular member. The curved flapper is configured to pivot against the tubular member between an open position and a closed position. The subsurface safety valve further includes a hard seat positioned inside the tubular member, in which the hard seat defines a seating surface configured to receive a sealing surface defined on a bottom periphery portion of the curved flapper to form a sealing interface having a slope that varies along the sealing interface.
摘要翻译： 用于控制井眼中的流体流动的地下安全阀。 在一个实施例中，地下安全阀包括具有延伸穿过其中的纵向孔的管状构件，可拆卸地连接到管状构件的弯曲挡板。 弯曲的挡板构造成在打开位置和关闭位置之间枢转抵靠管状构件。 所述地下安全阀还包括位于所述管状构件内的硬质座，所述硬座位于所述硬座中，所述硬座位于所述硬座中，所述硬座位于所述座部表面上，所述座部构造成容纳限定在所述弯曲挡板的底部周边部分上的密封表面，以形成密封界面， 沿密封界面。
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