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    • 1. 发明申请
    • SAFETY DEVICE FOR A FLUID PRODUCTION WELL, ASSOCIATED INSTALLATION AND METHOD
    • 用于流体生产的安全装置,相关的安装和方法
    • US20170022785A1
    • 2017-01-26
    • US15100139
    • 2014-12-02
    • GEOSERVICES EQUIPEMENTS
    • Francois Joseph GirardiFrançois Chevillard
    • E21B34/10F16K31/06E21B47/06E21B17/20E21B41/00
    • E21B34/06E21B23/02E21B34/16E21B41/0021E21B47/06E21B2034/005
    • Safety device (10) for a fluid production well, comprising a valve (58) used to seal a passage, and which can move between an open position of the passage (52) and a closed position of the passage (52); and connecting biasing means (92) for permanently biasing the valve (58) towards the closed position thereof. The device comprises holding means (42) for holding the valve (58) in its open position against permanent biasing means (92), and actuating means (42, 44) which are configured to actuate the holding means (42), on reception of a maintenance signal, to generate: a first displacement of the movement element (98) from the active valve biasing position to an intermediate valve biasing position, in which the valve (58) remains in its open position; and a subsequent second return displacement of the movement element (58) from the intermediate valve biasing position to the active valve biasing position.
    • 用于流体产生井的安全装置(10),包括用于密封通道的阀(58),并且可以在通道(52)的打开位置和通道(52)的关闭位置之间移动; 以及连接偏压装置(92),用于使阀(58)朝向其关闭位置永久地偏置。 该装置包括用于将阀(58)保持在其打开位置以抵抗永久偏置装置(92)的保持装置(42),以及构造成在接收到所述保持装置(42) 维持信号,以产生:所述运动元件(98)从所述主动阀偏置位置到所述阀(58)保持在其打开位置的中间阀偏置位置的第一位移; 以及运动元件(58)从中间阀偏置位置到主动阀偏置位置的随后的第二返回位移。