空气钻井有计划地设计成为必要。
石油和天然气钻井：12%。
特别重要的是油气钻井的灌浆。
The cementing of oil - and gas drillings is of particular importance.
但现在天然气钻探使得就业机会在冬季依然存在。
文中介绍空气钻井技术在大邑1井的应用情况。
The paper introduces the application of air drilling technology in well Dayi 1.
空气螺杆钻具是专为空气钻井而设计的动力装置。
The air screw drill tool was power equipment which was designed for air drilling.
天然气钻井公司手里掌握着水样数据资料，研究人员可以用这些数据进行环境风险研究。
Gas Drilling Companies Hold Data Needed by Researchers to Assess Risk to Water quality.
天然气钻井公司手里掌握着水样数据资料，研究人员可以用这些数据进行环境风险研究。
Gas Drilling Companies Hold Data Needed by Researchers to Assess Risk to Water quality.
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