In case of the oil casing pipe taken place staggered fracture, there can not put down the instruments in the well, the explosion method is often to be used.

研究油井套管由于错断，无法使下井工具通过情况下，采用爆炸方法打通错断口。

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In case of the oil casing pipe taken place staggered fracture, there can not put down the instruments in the well, the explosion method is often to be used.

研究油井套管由于错断，无法使下井工具通过情况下，采用爆炸方法打通错断口。

youdao