Oil recovery enhanced by air drive at different conditions was tested by large dynamic displacement equipment with ultimate oil recovery up to 36%.
利用大型动态驱替装置，测定了不同条件下空气驱提高采收率情况，显示最终采收率可达36%左右。
The oil pump drive gear oil seal is damaged, the air into the hydraulic system;
油泵主动齿轮油封损坏，空气进入液压系统；
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