北京地震台白家疃观测井钻探施工技术

Construction Technology of Drilling from Baijiatuan Monitoring Well at Beijing Seismic Station

摘要:

结合北京地震台白家疃观测井的施工实例，介绍了一套适用于松散层、大小裂隙、溶洞等复杂地层特殊要求钻孔的施工技术方法，分别从钻孔结构设计、钻进方法、钻具级配选择、护壁堵漏技术等方面进行了研究。在总结以往钻探施工经验的基础上，提出了复杂地层钻探施工技术和钻探施工质量保证措施，为后续该类型钻孔施工提供了有益的借鉴。

Abstract:

Combined with the construction example of Baijiatuan monitoring well of Beijing seismic station, the paper introduced a set of construction technical method which is suitable for boreholes with special requirements in complicated formations, such as unconsolidated layers, cracks and karst caves. The study was made on borehole design, drilling methods, drilling tool gradation selection, wall protection and leakage plugging technologies. Based on the previous drilling experience, drilling technical measures and drilling construction quality control measures for complicated formations were put forward, which can be useful reference for subsequent similar drilling construction.