做抽汲准备。
As long as the finger is clean it does not need swabbing.
只要手指干净的时候，并不需要擦洗。
The driller is to trip off bottom and out of the hole at a speed that will not cause swabbing.
司钻要用一个对井底不会产生抽吸的速度进行起钻。
The driller is to trip off bottom and out of the hole at a speed that will not cause swabbing.
司钻要用一个对井底不会产生抽吸的速度进行起钻。
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