钻井循环 meaning in Chinese

drilling cycle

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。