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1. 发明授权

US07314091B2 Cement-through, tubing retrievable safety valve 有权
标题翻译：水泥通道，管道可回收安全阀
公开(公告)号：US07314091B2
公开(公告)日：2008-01-01
申请号：US10853568
申请日：2004-05-25
申请人： Nathaniel Heath Wagner , George C. Duncan , Roddie R. Smith
发明人： Nathaniel Heath Wagner , George C. Duncan , Roddie R. Smith
IPC分类号： E21B34/06
CPC分类号： E21B34/101 , E21B34/102 , E21B2034/005
摘要： A subsurface safety valve is first provided. The safety valve generally comprises a tubular housing, an isolation sleeve disposed within an inner diameter of the tubular housing, with the isolation sleeve and the tubular body forming an annular area there between, a flow tube movably disposed along a portion of the annular area, and a flapper. The flapper is pivotally movable between an open position and a closed position in response to longitudinal movement of the flow tube in order to open and close the valve. Preferably, the annular area is isolated from an inner diameter of the isolation sleeve in the open position. A method is also provided that allows for a cementing operation to be performed through an open safety valve.
摘要翻译：首先提供地下安全阀。安全阀通常包括管状壳体，设置在管状壳体的内径内的隔离套筒，隔离套管和管状体在其间形成环形区域，沿着环形区域的一部分可移动地设置的流管，和挡板。响应于流管的纵向运动，挡板可以在打开位置和关闭位置之间枢转运动，以便打开和关闭阀。优选地，在打开位置，环形区域与隔离套筒的内径隔离。还提供了一种允许通过开启安全阀执行固井操作的方法。

2. 发明授权

US07543651B2 Non-elastomer cement through tubing retrievable safety valve 有权
标题翻译：非弹性体水泥通过管道可回收安全阀
公开(公告)号：US07543651B2
公开(公告)日：2009-06-09
申请号：US11255349
申请日：2005-10-21
申请人： Roddie R. Smith , Nathaniel H. Wagner , George C. Duncan
发明人： Roddie R. Smith , Nathaniel H. Wagner , George C. Duncan
IPC分类号： E21B34/10
CPC分类号： E21B34/101 , E21B34/102 , E21B2034/005
摘要： The present invention generally relates to a non-elastomeric cement through tubing retrievable safety valve configured to control fluid flow through a production tubing string. In one aspect, a valve for use in a wellbore is provided. The valve includes a tubular body. The valve further includes a flow tube having a bore therethrough, wherein the flow tube is disposed in the tubular body to form an annular area therebetween. The valve further includes a flapper movable between an open position and a closed position in response to the movement of the flow tube. Additionally, the valve includes a sealing system constructed and arranged to substantially isolate the annular area from the bore, thereby substantially eliminating the potential of contaminants in the bore from entering into the annular area. In another aspect, a method of controlling fluid in a wellbore is provided.
摘要翻译：本发明总体上涉及一种配置成控制通过生产油管柱的流体流动的非弹性水泥通过可回收的安全阀。一方面，提供了一种用于井眼的阀。阀包括管状体。阀还包括具有穿过其中的孔的流动管，其中流管设置在管状体中以在其间形成环形区域。阀还包括挡板，其响应于流动管的移动而在打开位置和关闭位置之间移动。此外，阀包括构造和布置为将环形区域与孔基本上隔离的密封系统，从而基本上消除了孔中的污染物进入环形区域的可能性。另一方面，提供了一种控制井眼中的流体的方法。

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