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。
The program is to process all kinds of oil well pipe thread and casing coupling.
该项目是加工各类油井管螺纹、套管接箍的机械加工项目。
It is very serious situation that H2S gas corrodes iron and steel pipe, equipments cause huge destroy in oil field, and analyses the principle that H2S gas corrode tubing, casing.
针对H2S给油田钢铁管材、设备造成巨大破坏的严重情况，分析了H2S对油、套管腐蚀机理。
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