... 欠平衡钻井underbalanced drilling 液相欠平衡钻井fluid phase underbalanced drilling 气相欠平衡钻井gaseous phase underbalanced drilling ...
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液相欠平衡钻井
Liquid-phase underbalanced drilling
以上为机器翻译结果，长、整句建议使用 人工翻译 。
开展了液相欠平衡及气体钻井井壁稳定及井筒携岩能力研究。
The study work of wellbore stability and capacity to carry rock cutting during liquid UBD and gas drilling is developed.
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