煤层气多分支水平井钻井工艺分析

Analysis of the Drilling Technology of Coalbed Methane Multi-branch Horizontal Wells

详细介绍煤层气多分支水平钻井技术的难点,针对该技术衍生出的各类问题,提出改进内部井眼,加强洞穴井与水平井的联通,采用充空气类欠平衡工艺三项有效措施来优化煤层气多分支水平钻井技术。随着科学技术的快速发展,新型钻井技术的数量也逐渐增多,可将小井眼钻井工艺、分支侧钻工艺与电磁波钻探技术运用到煤气层水平井的钻井工艺中,从而增强煤层内的开采水准。

Introduce the difficulties of CBM multi-branch horizontal drilling technology in detail.Aiming at various problems derived from this technology,three effective measures are proposed to improve the internal wellbore,strengthen the connection between cave wells and horizontal wells,and adopt air-filled underbalanced technology.To optimize CBM multi-branch horizontal drilling technology.With the rapid development of science and technology,the number of new drilling technologies has gradually increased.The staff can apply slim hole drilling technology,branch sidetracking technology and electromagnetic wave drilling technology to the drilling technology of horizontal wells in gas formations,thereby enhancing the coal seam.Mining level.