18-12-2013 дата публикации
Номер: CN103452835A
Автор:
Li Dajian,
Xu Yonggao,
Zeng Yaqin,
Gan Qingming,
Niu Caiyun,
Lv Yiming,
Wang Bai,
Zhu Hongzheng,
Zhao Xiaowei,
He Miao,
Han Ertao,
Fan Xuyong
Принадлежит:
The invention discloses a separate-layer oil extraction device capable of controlling flowing pressures of upper and lower pay zones. The separate-layer oil extraction device is designed for simplifying structures of traditional two-layer oil extraction devices, improving the adaptability of the separate-layer oil extraction devices and achieving production of upper and lower pay zones under reasonable production flowing pressures. The separate-layer oil extraction device mainly comprises a plunger barrel, a traveling valve, a fixed valve, a connecting body, a side wall controllable valve, a central controllable valve, an eccentrically arranged valve, an inner channel eccentrically arranged valve and an eccentrically arranged valve side wall controllable valve, wherein the plunger barrel is arranged in a pump barrel, the traveling valve is disposed in the plunger barrel, the fixed valve is arranged in the pump barrel, the connecting body is connected with the pump barrel, the side wall ...
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