Unlike Wells designed to pumpcrude, oil sands don't have the same production decline rate.
因为钻探原油的油井产量是递减的，但含油砂却没有这种产量递减率。
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OPEC is breaching its production limits the most in six years, signaling the world’s biggest suppliers are ready to pump more crude next year as oil rallies toward $100 a barrel.
B, single screw pump before adding buffer tank in pipeline, the buffering can store a certain amount of crudeoil, and a current limiting device for mixture pumps supply a certain amount of crude oil.