穿采空区氮气施工工艺  

Nitrogen construction technology through(through)goaf wells

作　　者：郭文水 Guo Wenshui(Shanxi Lan Yan Coal Seam Gas Group Co.,Ltd,Jincheng 048000)

机构地区：[1]山西蓝焰煤层气集团有限责任公司,山西晋城048000

出　　处：《石化技术》2024年第5期252-255,共4页Petrochemical Industry Technology

摘　　要：对该区穿采空区煤层气井的施工工艺进行了研究,提出了利用氮气施工的钻井工艺,进一步优化了钻井的井身结构以及氮气施工过程中应注意的安全问题,该方法有效地解决了采空区敏感层段的坍塌、掉块、漏失等施工难题。保证了穿采空区煤层气水平井的顺利施工,进一步验证了该钻井技术的可行性,对后续深部煤层气的规模性开发具有重要的指导意义。This paper studies the construction technology of the coalbed methane well in the goaf in the area,proposes the drilling technology of nitrogen construction,further optimizes the well structure of the drilling well and the safety issues that should be paid attention to in the process of nitrogen construction,and effectively solves the construction problems such as collapse,block drop and leakage in the sensitive layer of the goaf.It ensures the smooth construction of the horizontal well of coalbed methane in the goaf,further verifies the feasibility of the drilling technology,and has important guiding significance for the subsequent large-scale development of deep coalbed methane.

关 键 词：煤矿采空区 氮气施工 敏感层段 

分 类 号：TD7[矿业工程—矿井通风与安全]