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    • 7. 发明申请
    • WELL FLOW CONTROL WITH MULTI-STAGE RESTRICTION
    • 具有多级限制的井流控制
    • WO2013122596A1
    • 2013-08-22
    • PCT/US2012/025576
    • 2012-02-17
    • LOPEZ, Jean-MarcHOLDERMAN, LukeGRECI, Stephen, Michael
    • LOPEZ, Jean-MarcHOLDERMAN, LukeGRECI, Stephen, Michael
    • E21B43/08E21B43/10
    • E21B43/08E21B43/12
    • A well screen assembly includes a tubular base pipe. The base pipe has a sidewall aperture that communicates fluid between an interior central bore of the base pipe and an exterior of the base pipe. A filtration screen is around the base pipe. The filtration screen defines a lateral fluid passage along a axial length of the well screen assembly. A flow control device is coupled to the base pipe and the filtration screen. The flow control devices includes a ring sealing the lateral fluid passage from the central bore. An elongate restrictor passage is in the ring, oriented longitudinally. The elongate restrictor passage is configured to communicate fluid between the lateral fluid passage and the central bore. The restrictor passage includes an internal, square edged orifice defined by a fixed, annular protrusion. The annular protrusion extends inwardly from an interior surface of the restrictor passage.
    • 井筛组件包括管状基管。 基管具有侧壁孔,其在基管的内部中心孔和基管的外部之间连通流体。 过滤屏在基管周围。 过滤筛网沿着井筛组件的轴向长度限定侧向流体通道。 流量控制装置连接到基管和过滤网。 流量控制装置包括从中心孔密封侧向流体通道的环。 细长的限流器通道位于环中,纵向定向。 细长限流器通道构造成在侧向流体通道和中心孔之间连通流体。 限流器通道包括由固定的环形突起限定的内部正方形边缘孔口。 环形突起从限制器通道的内表面向内延伸。