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公开(公告)号：US20080156497A1
公开(公告)日：2008-07-03
申请号：US11619150
申请日：2007-01-02
IPC分类号： E21B34/00
CPC分类号： E21B34/10 , E21B2034/005
摘要： A safety valve with a flapper/flow tube friction reducer. A safety valve for use in a subterranean well includes a closure assembly, an operating member which engages the closure assembly, and at least one of the closure assembly and the operating member including a friction reducing device which provides rolling contact between the closure assembly and the operating member. Another safety valve includes a flapper which rotates about a pivot relative to a seat, a flow tube which engages the flapper to rotate the flapper, and a friction reducing device which with rolling contact biases the flow tube toward the pivot when the flow tube engages the flapper. Yet another safety valve is described in which at least one of the flapper, the seat and the flow tube has a friction reducing device attached thereto which provides rolling contact between the flapper and the flow tube, or between the flow tube and the seat.
摘要翻译： 带挡板/流量管减摩器的安全阀。 一种用于地下井的安全阀包括闭合组件，接合闭合组件的操作构件以及闭合组件和操作构件中的至少一个，包括减摩装置，该装置提供闭合组件与闭合组件之间的滚动接触 操作员 另一安全阀包括围绕枢轴相对于座椅旋转的挡板，接合挡板以旋转挡板的流管;以及摩擦减小装置，当流管接合时，滚动接触器将流动管朝向枢轴偏压 挡板。 描述了另一个安全阀，其中挡板，座和流管中的至少一个具有附接到其上的减摩装置，其提供挡板和流管之间或在流管和座之间的滚动接触。
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公开(公告)号：US20080053662A1
公开(公告)日：2008-03-06
申请号：US11469269
申请日：2006-08-31
CPC分类号： E21B34/066 , E21B2034/005
摘要： Electrically operated well tools. A well system includes a well tool positioned in a wellbore. The well tool includes an actuator and an operating member displaceable to operate the well tool. The actuator includes a series of longitudinally distributed electromagnets, in which current is controllable in a predetermined pattern to thereby variably control longitudinal displacement of the operating member. In another well system, the operating member is displaceable between opposite maximum limits of displacement to operate the well tool, and an electromagnet is operative to displace the operating member to at least one position between the opposite maximum limits of displacement. In a method of operating a well tool, the well tool is operated by controlling current in a series of longitudinally distributed electromagnets of an actuator in a predetermined pattern, thereby causing corresponding longitudinal displacement of an operating member.
摘要翻译： 电动井具。 井系统包括定位在井眼中的井工具。 井具包括致动器和可移动以操作井工具的操作构件。 致动器包括一系列纵向分布的电磁体，其中电流可以预定的模式控制，从而可变地控制操作构件的纵向位移。 在另一个井系统中，操作构件可以在相对的最大极限位移之间移动以操作井具，并且电磁体可操作以将操作构件移动到位移相对的最大极限之间的至少一个位置。 在操作井工具的方法中，通过以预定图案控制致动器的一系列纵向分布的电磁体中的电流来操作井工具，从而引起操作构件的相应的纵向位移。
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公开(公告)号：US5996697A
公开(公告)日：1999-12-07
申请号：US124700
申请日：1998-07-29
IPC分类号： E21B23/04 , E21B33/035 , E21B33/12 , E21B47/09
CPC分类号： E21B33/12 , E21B23/04 , E21B33/035 , E21B33/1212 , E21B47/09
摘要： A plug is provided which is specially adapted for statically setting a plug portion within an internal profile formed in a wellhead. In an illustrated preferred embodiment, the plug portion is set by application of fluid pressure to a running tool portion. When set in the profile, the plug portion is secured statically relative to the profile, thereby permitting advantageous utilization of a metal-to-metal seal on the plug portion. The plug portion includes features which maintain its set configuration in the profile. The running tool portion includes multiple pistons which enhance operation of the running tool portion. A disclosed verification tool provides an indication that the plug portion has been properly set.
摘要翻译： 提供了一种插头，其特别适用于在形成在井口中的内部轮廓内静态地设置塞子部分。 在图示的优选实施例中，通过将流体压力施加到行进工具部分来设定塞子部分。 当设置在型材中时，插头部分相对于型材静止地固定，从而允许在插头部分上有利地使用金属对金属密封件。 插头部分包括在配置文件中保持其设置配置的特征。 运行工具部分包括多个活塞，其增强了运行工具部分的操作。 所公开的验证工具提供插头部分已被适当地设置的指示。
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