发明名称 BI-DIRECTIONAL FLAPPER/SEALING MECHANISM AND TECHNIQUE
摘要 An isolation valve can include a pivot connecting a closure member to an actuator member which displaces when the isolation valve is actuated between open and closed configurations, whereby the pivot displaces with the actuator member. Another isolation valve can include a pivot connecting a closure member to an actuator member which displaces when the isolation valve is actuated between open and closed configurations, and a profile formed in the isolation valve. The profile biases the closure member from an open position to a closed position when the isolation valve is actuated from the open configuration to the closed configuration. A method of actuating an isolation valve includes actuating the isolation valve between open and closed configurations, and wherein actuating the isolation valve comprises simultaneously displacing an actuator member, a closure member, and a pivot which pivotably connects the closure member to the actuator member.
申请公布号 US2011232916(A1) 申请公布日期 2011.09.29
申请号 US201113046728 申请日期 2011.03.12
申请人 HALLIBURTON ENERGY SERVICES, INC. 发明人 MALDONADO RICARDO R.
分类号 E21B34/06;E21B34/00 主分类号 E21B34/06
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