In some cases, a ball or dart is plugged to block circulation through the tool string and enable the application of the release pressure.
在某些情况下，用一个球或镖进行封堵，以便将通过工具管柱的循环切断，并使得能施加释放压力。
In some cases, a ball or dart is plugged to block circulation through the tool string and enable the application of the release pressure.
在某些情况下，用一个球或镖进行封堵，以便将通过工具管柱的循环切断，并使得能施加释放压力。
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