多工艺空气钻进技术及其新进展

Alternative Process Airdrilling Technology and Its New Development

摘要:

多工艺空气钻进技术具有很多优点，多年来除在水井、地热井广泛应用外,现煤矿瓦斯排放井、煤层气井、油气田井、太阳能井及各种大口径工程施工孔也已成为应用的热点。实践已充分证明，气动潜孔锤钻进技术，气举反循环钻进技术最受青睐。介绍了气动潜孔锤和气举反循环钻进技术的发展概况、工作原理、操作要点及应用的注意事项等。

Abstract:

Alternative process airdrilling has many advantages, which has been applied in water well and geothermal well for years and now has become hot application in coal mine gas discharge well, coal bed methane well, oil & gas well, solar energy well and all types of large diameter borehole engineering. Practice shows that pneumatic DTH hammer and airlift reverse circulation are most popular. The paper introduced the pneumatic DTH hammer and airlift reverse circulation drilling technology in their development situation, working principle, operation points and the application attentions.