Wellhead pressure control method and device for pressure control drilling well
作者： Wang Kai , Wang Ying , Jiang Yingjian , Zhu Weixin , Zhai Xiaoqiang
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摘要: The invention provides a wellhead pressure control method and device for drilling well, belongs to the technical field of petroleum natural gas equipment. A rotary spraying preventer is connected with meter hydraulic flat valve; valve throttle liquid-gas console through oil inlet pipe outlet pipe; pipeline pipeline; an source pipeline, remote cable. controls rotating head achieve purpose controlling return pressure.
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