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And after adoption allotype spout,the diameter of monotube rotary shotcrete foundation pile is availably augmented,the work efficiency and quality are evidently advanced,and the cost of construction is debased.

而采用异型喷头工艺技术 ,单管法旋喷的桩径可有效增大 ,其成桩工效及质量明显提高 ,也降低了施工成

On the deluge system design,deluge nozzle selection is the difficulty and keystone.

对此结合海上平台的特点,从理论和海上工程应用等方面进行了论述,提供了海上平台水喷淋头喷头选型的方法,可供同行参考使用。

The exploration and development have focused increasingly on the offshore reservoirs,while there are a lot of challenges and difficulties in deepwater drilling,and jetting technology is one of the technologies to solve the problems of shallow formation drilling in deepwater.

深水油气日益成为海洋石油勘探开发的热点,但深水钻井作业面临着许多难题和挑战,喷射导管技术是解决深水浅层钻井难题的技术之一。