发明名称 PUMP FOR PUMPING HYDRAULIC WELL CONTROL FLUID INTO A PRODUCTION FLOWLINE
摘要 <p>A pump for use in pumping hydraulic well control fluid expelled from a control device of a well, comprises means for accumulating such hydraulic well control fluid and means for using the pressure of hydraulic fluid supplied to the well to pump accumulated hydraulic well control fluid into a production flowline of the well.</p>
申请公布号 EP2382369(A2) 申请公布日期 2011.11.02
申请号 EP20090771585 申请日期 2009.12.10
申请人 VETCO GRAY CONTROLS LIMITED 发明人 GILL, SIMON DAVID
分类号 E21B41/00;F04B5/02;F04B9/109;F04B9/117 主分类号 E21B41/00
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