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    • 1. 发明申请
    • DIFFERENTIAL PRESSURE INDICATOR FOR DOWNHOLE ISOLATION VALVE
    • 用于井下隔离阀的差压指示器
    • US20150144334A1
    • 2015-05-28
    • US14522852
    • 2014-10-24
    • Weatherford/Lamb, Inc.
    • Kyle Allen KINGJoe NOSKEChristopher L. MCDOWELLBrian A. MICKENS
    • E21B47/06E21B34/06E21B47/12E21B34/10
    • A differential pressure indicator (DPI) for use with a downhole isolation valve includes a tubular mandrel for assembly as part of a casing string and for receiving a tubular string. The mandrel has a stop shoulder and a piston shoulder. The DPI further includes a tubular housing for assembly as part of the casing string and for receiving the tubular string. The housing is movable relative to the mandrel between an extended position and a retracted position and has a stop shoulder and a piston shoulder. The DPI further includes a hydraulic chamber formed between the piston shoulders and a coupling in communication with the hydraulic chamber and for connection to a sensing line. The housing is movable relative to the mandrel and to the extended position in response to tension exerted on the DPI.
    • 用于井下隔离阀的差压指示器(DPI)包括管状心轴,用于组装成套管柱的一部分并用于容纳管状柱。 心轴具有止动肩和活塞肩。 DPI还包括用于组装成套管柱的一部分并用于接纳管状管的管状壳体。 壳体可以在延伸位置和缩回位置之间相对于心轴移动并且具有止动肩部和活塞肩部。 DPI还包括形成在活塞肩部和与液压室连通并用于连接到感测线的联轴器之间的液压室。 响应于施加在DPI上的张力,壳体相对于心轴可移动并且延伸到伸出位置。
    • 8. 发明申请
    • ISOLATION VALVE WITH DEBRIS CONTROL AND FLOW TUBE PROTECTION
    • 隔离阀具有脱扣控制和流量保护
    • US20140166295A1
    • 2014-06-19
    • US14186911
    • 2014-02-21
    • Weatherford/Lamb, Inc.
    • Christopher L. MCDOWELLJoe NOSKEPaul L. SMITH
    • E21B34/14
    • E21B34/12E21B34/102E21B34/103E21B34/14E21B2034/005F16K15/03
    • The present invention generally relates to an isolation valve with debris control. In one aspect, an isolation valve for use as part of a casing string is provided. The isolation valve includes a housing having a bore and a valve cavity. The isolation valve further includes a valve member movable between a first position in which the valve member obstructs the bore of the housing and a second position in which the valve member is disposed in the valve cavity. Further, the isolation valve includes a flow tube configured to allow movement of the valve member between the first and second positions. Additionally, the isolation valve includes an engagement assembly adapted to engage the flow tube to substantially prevent debris from entering the valve cavity when the valve member is in the second position. In another aspect, a method of operating an isolation valve in a wellbore is provided.
    • 本发明一般涉及具有碎片控制的隔离阀。 一方面,提供一种用作套管串的一部分的隔离阀。 隔离阀包括具有孔和阀腔的壳体。 隔离阀还包括阀构件,该阀构件可在第一位置和第二位置之间移动,第一位置中阀构件阻塞壳体的孔和阀构件设置在阀腔中的第二位置。 此外,隔离阀包括流动管,该流管构造成允许阀构件在第一和第二位置之间移动。 此外,隔离阀包括接合组件,该接合组件适于接合流动管,以当阀构件处于第二位置时基本上防止碎屑进入阀腔。 另一方面,提供了一种在井眼中操作隔离阀的方法。