balanced pressure drilling

• 欠平衡钻井

balanced pressure drilling的用法和样例：

例句

1. Underbalanced drilling increases deliverability form gas storage wells.
   采用欠平衡钻井增加油气贮备井的开采量。
2. In light of the geological features of reservoirs in Changqing Gas Field, the study and test of gas underbalance pressure drilling technology have been carried out in the field.
   摘要针对长庆气田储层地质特征，开展了长庆气田天然气欠平衡钻井技术研究及试验。