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Composite water-controlling and flow-limiting device and screen pipe thereof

机译：复合式控水限流装置及其筛管

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Disclosed are a composite water-controlling and flow-limiting device and a screen pipe thereof. The composite water-controlling and flow-limiting device comprises a composite water-controlling screen pipe. The composite water-controlling screen pipe comprises: a base pipe (1); a self-adaptive internal flow control device (3) mounted on the base pipe and used for a circulation channel for fluids inside and outside the base pipe and controlling an opening degree of the circulation channel according to the change in viscosity of different fluids so as to automatically limit flow; a flow control device (4) mounted on the base pipe and adjacent to the self-adaptive internal flow control device for controlling an overflow of the base pipe; and a screen pipe coaxially and threadedly connected to the base pipe, wherein an inner diameter of the screen pipe is the same as that of the base pipe. The composite water-controlling and flow-limiting device and the screen pipe thereof can automatically control the flow of fluid according to fluid characteristics, balance the inflow profile, implement simple and easy-to-operate active water control and oil-stabilizing production, and allow the water-controlling and oil-increasing functions thereof to be effective during the entire production period of an oil well.
机译：本发明公开了一种复合式控水限流装置及其筛管。该复合控水限流装置包括复合控水筛管。所述复合控水筛管包括：基管（1）；安装在基础管上的自适应内部流量控制装置（3），用于基础管内外流体的循环通道，并根据不同流体粘度的变化控制循环通道的开度，以自动限制流量；流量控制装置（4），安装在基管上，与自适应内部流量控制装置相邻，用于控制基管的溢流；以及与所述母管同轴并螺纹连接的筛管，其中所述筛管的内径与所述母管的内径相同。该复合控水限流装置及其筛管可根据流体特性自动控制流体流量，平衡流入剖面，实现简单易操作的主动控水稳油生产，并使其控水增油功能在油井的整个生产期间有效。

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