Actually, casing is not absolutely ideal pipe.
实际上，套管并不是绝对理想的圆管。
The casing pipe against the water is important equipment in oil engineering.
隔水套管是石油工程中的重要设备。
Set in a casing pipe cutting, equipment, light and practical.
集套管切管于一身，装备轻便实用。
Record all the drill pipe and casing pressure;
记录钻杆压和套压；
Record all the drill pipe and casing pressure;
记录钻杆压和套压；
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