一根立管对实现顺利循环至关重要。
排水立管的上部和下部都存在正压和负压。
Positive and negative pressure existed in the upper and lower drainage pipes.
通过这根高压管线，泥浆被泵入立管和钻忏杆。
Through this high pressure line, mud is pumped in to the standpipe and drill pipe.
并且证明悬料区的总压降可以近似等于立管的压降。
The total pressure drop in hung-up regime is approximately equal to that in the standpipe.
并且证明悬料区的总压降可以近似等于立管的压降。
The total pressure drop in hung-up regime is approximately equal to that in the standpipe.
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