B, single screw pump before adding buffer tank in pipeline, the buffering can store a certain amount of crude oil, and a current limiting device for mixture pumps supply a certain amount of crude oil.
单螺杆泵前管路中增设缓冲罐，在缓冲罐里储存一定量的原油，并用一套限流装置给混输泵供给一定量的原油。
As the important part of the integral manufacture of the oil field, the oil depot takes the responsibility to store up, measure and transport the crude oil which has been exploited.
油库是油田整体生产的重要单元，主要承担开采原油的储存、计量和外输任务。
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