ICS75.020 CCSE10/19 21 辽宁省地方标准 DB21/T3898—2023 煤矿采空区地面煤层气井地质录井作业规 范 Specificationforgeologicalloggingofsurfacecoalbedmethanewellsingoafofcoal mine 2023-12-30发布 2024-01-30实施 辽宁省市场监督管理局  发布 DB21/T3898—2023 I目次 前言..................................................................................II 1范围.................................................................................1 2规范性引用文件.......................................................................1 3术语和定义...........................................................................1 4地质录井作业流程.....................................................................2 5地质录井施工设计.....................................................................2 6地质录井作业准备与钻前验收...........................................................2 7录井作业.............................................................................3 8完井地质工作.........................................................................5 9健康、安全与环境管理.................................................................5 10资料提交............................................................................5 附录A（资料性）煤层气井录井作业流程..................................................6 附录B（资料性）煤（岩）芯次票、分层票、采样票........................................8 附录C（资料性）钻井综合柱状剖面图表..................................................9 参考文献........................................................................15