公开(公告)号：US07762335B2

公开(公告)日：2010-07-27

申请号：US11843931

申请日：2007-08-23

申请人： David Z. Anderson ,  Darren E. Bane ,  Alan N. Wagner ,  John E. Gunnells ,  Anthony S. Coghill ,  Allen P. Carney ,  Barry Lee Brown ,  Troy L. Smith ,  Jeremy R. Johnson

发明人： David Z. Anderson ,  Darren E. Bane ,  Alan N. Wagner ,  John E. Gunnells ,  Anthony S. Coghill ,  Allen P. Carney ,  Barry Lee Brown ,  Troy L. Smith ,  Jeremy R. Johnson

IPC分类号： E21B34/10

CPC分类号： E21B34/10 ,  E21B2034/005

摘要： A system is provided for switching between redundant control systems for a subsurface safety valve (SSV) while being able to isolate the closure spring from hydrostatic pressure in the control line of the system that is not being used. There are two control lines that connect to discrete operating pistons that are both coupled to the flow tube. Each operating piston is connected to a control rod with the control rods terminating near opposed ends of a pivoting member. Pushing down on one rod pushes up on the other rod so that the other rod is held supported and the hydrostatic pressure in its associated control line doesn't affect the force needed by the closure spring to close the SSV. Releasing control line pressure puts the system in neutral to allow either of the systems to be reselected.

摘要翻译： 提供一种用于在地下安全阀（SSV）的冗余控制系统之间切换的系统，同时能够将闭合弹簧与未使用的系统的控制线中的静水压力隔离开。 有两条连接到离散的操作活塞的控制线都连接在流管上。 每个操作活塞连接到控制杆，控制杆在枢转构件的相对端附近终止。 将另一根杆推到另一根杆上，将另一根杆保持在支撑状态，其关联控制线中的静水压力不会影响闭合弹簧关闭SSV所需的力。 释放控制线压力使系统处于中立状态，以允许任何一个系统被重新选择。

公开(公告)号：US20090050327A1

公开(公告)日：2009-02-26

申请号：US11843931

申请日：2007-08-23

申请人： David Z. Anderson ,  Darren E. Bane ,  Alan N. Wagner ,  John E. Gunnells ,  Anthony S. Coghill ,  Allen P. Carney ,  Barry Lee Brown ,  Troy L. Smith ,  Jeremy R. Johnson

发明人： David Z. Anderson ,  Darren E. Bane ,  Alan N. Wagner ,  John E. Gunnells ,  Anthony S. Coghill ,  Allen P. Carney ,  Barry Lee Brown ,  Troy L. Smith ,  Jeremy R. Johnson

IPC分类号： E21B34/10

CPC分类号： E21B34/10 ,  E21B2034/005

摘要： A system is provided for switching between redundant control systems for a subsurface safety valve (SSV) while being able to isolate the closure spring from hydrostatic pressure in the control line of the system that is not being used. There are two control lines that connect to discrete operating pistons that are both coupled to the flow tube. Each operating piston is connected to a control rod with the control rods terminating near opposed ends of a pivoting member. Pushing down on one rod pushes up on the other rod so that the other rod is held supported and the hydrostatic pressure in its associated control line doesn't affect the force needed by the closure spring to close the SSV. Releasing control line pressure puts the system in neutral to allow either of the systems to be reselected.

摘要翻译： 提供一种用于在地下安全阀（SSV）的冗余控制系统之间切换的系统，同时能够将闭合弹簧与未使用的系统的控制线中的静水压力隔离开。 有两条连接到离散的操作活塞的控制线都连接在流管上。 每个操作活塞连接到控制杆，控制杆在枢转构件的相对端附近终止。 将另一根杆推到另一根杆上，将另一根杆保持在支撑状态，其关联控制线中的静水压力不会影响闭合弹簧关闭SSV所需的力。 释放控制线压力使系统处于中立状态，以允许任何一个系统被重新选择。

公开(公告)号：US20120186084A1

公开(公告)日：2012-07-26

申请号：US13438496

申请日：2012-04-03

申请人： Tyler C. Roberts ,  Barry Lee Brown ,  John E. Gunnells ,  James T. Sloan

发明人： Tyler C. Roberts ,  Barry Lee Brown ,  John E. Gunnells ,  James T. Sloan

IPC分类号： B21D53/10

CPC分类号： F16K15/03 ,  Y10T29/49409 ,  Y10T29/49419 ,  Y10T29/49426 ,  Y10T137/7902

摘要： A flapper base provides a flapper base body with a hinge portion unitarily formed thereupon and a flapper seat surface formed within the flowbore of the body. The flapper base may be formed from a single section of tubular metallic stock. In a method of forming a base, the stock is gripped by a rotary clamp, and a five-axis milling machine is used to cut away portions of the stock section and to form the seat surface.

摘要翻译： 挡板基座提供了一个挡板基体，其中铰链部分整体地形成在其上，并且在主体的流道内形成有挡板座表面。 挡板基座可以由单一管状金属原料形成。 在形成基座的方法中，通过旋转夹具夹持原料，使用五轴铣床切割坯料部分的一部分并形成座面。

公开(公告)号：US20100314571A1

公开(公告)日：2010-12-16

申请号：US12484671

申请日：2009-06-15

申请人： Tyler C. Roberts ,  Barry Lee Brown ,  John E. Gunnells ,  James T. Sloan

发明人： Tyler C. Roberts ,  Barry Lee Brown ,  John E. Gunnells ,  James T. Sloan

IPC分类号： F16K15/03 ,  B21K1/24

CPC分类号： F16K15/03 ,  Y10T29/49409 ,  Y10T29/49419 ,  Y10T29/49426 ,  Y10T137/7902

摘要： A flapper base provides a flapper base body with a hinge portion unitarily formed thereupon and a flapper seat surface formed within the flowbore of the body. The flapper base may be formed from a single section of tubular metallic stock. In a method of forming a base, the stock is gripped by a rotary clamp, and a five-axis milling machine is used to cut away portions of the stock section and to form the seat surface.

摘要翻译： 挡板基座提供了一个挡板基体，其中铰链部分整体地形成在其上，并且在主体的流道内形成有挡板座表面。 挡板基座可以由单一管状金属原料形成。 在形成基座的方法中，通过旋转夹具夹持原料，使用五轴铣床切割坯料部分的一部分并形成座面。