underbalance meaning in Chinese

不足平衡
平衡不足
欠平衡

Studies on mathematical model and practical method of well testing while underbalance drilling
欠平衡钻井随钻试井数学模型及实用方法研究
The gas underbalance pressure drilling test for protecting reservoir was carried out in two holes
开展了2口保护储层的天然气欠平衡钻井试验。
Abstract : a formula for calculating the minimum underbalance in lower permeability reservoir is obtained by applying a drag force function to testing data
文摘:通过将拖曳力函数用于油田测试数据，提出了确定低渗透地层最小测试压差的公式和方法。
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。
The optimization of underbalance pressure drilling cycle medium and casing program and the complicated circumstances ( formation water out , sidewall stabilization and so on ) being able to occur in underbalance pressure drilling job were analyzed and investigated
在欠平衡钻井循环介质的优选、井身结构以及欠平衡钻井作业中有可能出现的地层出水、井壁稳定性等方面进行了分析和研究。