flushing fluid ; flush fluid ; washing fluid
洗井用过的废液 shale oil ; slush oil
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这种射流洗井器应用射流原理进行设计，利用高压注入水作动力液，抽汲地层液返出。
The device is designed by means of the jetting principle, and it takes the high-pressure injected water as power fluid to drive the formation fluid returning to the surface.
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洗井液（washing fluid）又称冲砂液，冲洗液。用来冲洗井壁，清除井内沉渣或淤砂的流体。
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