The paper discussed reservoir protection and drilling fluid technique in drilling process of coal bed methane, and the lost circulation control, coring, cementing technique as well.
包贵全.煤层气钻井工程中几个重点技术问题的探讨[J].钻探工程,2007,34(12):4-8. BAO Gui - quan. Study on Some Focal Technical Problems of Drilling Engineering for Coal Bed Methane[J]. Drilling Engineering, 2007,34(12):4-8.