多工艺空气高效钻进技术在地热井施工中的应用实践

Application practice of multi-process high-efficiency air drilling technology in geothermal well construction

摘要:

多工艺空气钻进技术已成为深部地热和地下水资源开发利用中行之有效的方法，在很好地保护地热储层的同时，还具有钻进效率高、成本低、无污染等优势。本文结合多年的生产实践，阐述了地热井施工中多工艺空气钻进技术及其设备配套，气动潜孔锤钻进和气举反循环钻进技术的组合应用，及其在施工中取得的良好效果。

Abstract:

The multi-process air drilling technology has become an effective method for the development and utilization of deep geothermal and groundwater resources. It not only offers excellent protection for geothermal reservoirs， but also has advantages such as high drilling efficiency， low cost， and no pollution. Based on years of production practice， this paper describes the multi-process air drilling technology and its equipment used in geothermal well construction， as well as the combined application of pneumatic down-the-hole hammer drilling and air-lift reverse circulation drilling technologies， along with the favorable results achieved in practice.