悬挂式独立内管气举反循环在地热钻井中的应用

Application of Air-lifting Reverse Circulation System with Suspension Type Independent Inner Pipe in Geothermal Well Construction

摘要:

随着天津地区深部热储开发力度逐渐加大，地热钻井需要钻穿多个严重漏失地层，其施工难度越来越大。为此，研究出一套悬挂式独立内管气举反循环钻井系统，结合天津地区东13区2口地热井工程实例，对该系统进行了介绍，并对其在地热深井施工中的应用效果进行了分析。

Abstract:

With the gradually increasing development of deep geothermal reservoir in Tianjin area, it becomes more difficult for geothermal well drilling construction as serious leakage formations should be drilled through. Therefore, a set of air-lift reverse circulation drilling system with suspension type independent inner pipe is developed. In combination with the engineering examples of 2 geothermal wells in Tianjin area, the paper introduces this drilling system and analyzes the application effects in deep geothermal wells construction.