煤层气勘查中绿色钻探技术应用

Application of green drilling technology in coalbed methane exploration

摘要:

随着煤系矿产勘探开发的不断深入，尤其国家提出“碳达峰、碳中和”目标以来，在勘查过程中推行绿色勘查技术势在必行。本文在绿色勘查概念的基础上，结合煤层气钻探生产工艺流程，根据煤系气储层特征及致害因子，分析了保护储层及周边环境的钻探技术。通过分析钻探施工对地下水污染的特点、污染物的主要成分及污染途径，提出了对应的污染防治措施及处理技术。介绍了两种煤系气开发时提高钻探效率的工艺，同时可降低作业过程中产生的污染物总量和污染影响时间。并针对绿色钻探设备配置、钻井液配比、废弃物回收处理等相关技术进行了探讨。

Abstract:

With the continuous progress in the development of coal-based minerals and the initiative of “carbon peak and carbon neutralization” raised by China， it is inevitable to enforce the implementation of green exploration technology. Based on the concept of green exploration and combined with the drilling process of coal bed methane， this paper focuses on the drilling technology for protection of the surrounding environment and the coalbeds. By analyzing the characteristics of the groundwater pollution， the main components of the pollutants and the main pollution pathway which are caused by drilling operations， pollution prevention and treatment measures and technologies are proposed. Two drilling technologies are recommended for the development of CBM as they can improve the drilling efficiency， and reduce the total amount of pollution and the pollution time during drilling. The paper also discusses green drilling equipment， drilling fluid technology and waste recycling technology.