当井的状况欠好时，或许要进行为时较短的起下钻作业来实验井喷的可能性。
Perhaps there will be a short trip to test the possibility of a blowout-in case the will is acting up.
在平常的不压井起下钻作业中，管柱下入井眼是依靠其自身重量，不需要附加的向下载荷或者推力。
In ordinary stripping operations, the pipe falls into the wellbore under its own weight, and no additional downward force or pushing is required.
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