ICS 73.100.30 CCS D 10/19 34 安徽省 地方 标准 DB34/T 4381—2023 两淮煤矿地面定向多分支水平井钻井 技术规程 Regulation for drilling technology of ground directional multi -lateral horizontal wells in the Huainan and Huaibei coal mines 2023 - 03 - 01发布 2023 - 04 - 01实施 安徽省市场监督管理局 发布 DB34/T 4381 —2023 I 目次 前言 ................................ ................................ ................ III 1 范围 ................................ ................................ ............... 1 2 规范性引用文件 ................................ ................................ ..... 1 3 术语和定义 ................................ ................................ ......... 2 4 工程设计 ................................ ................................ ........... 4 设计步骤 ................................ ................................ ....... 4 设计书格式 ................................ ................................ ..... 4 井身结构设计 ................................ ................................ ... 5 井眼轨迹设计 ................................ ................................ ... 6 下部钻具组合设计 ................................ ............................... 6 钻井液设计 ................................ ................................ ..... 7 井口及井控装置设计 ................................ ............................. 8 固井工程设计 ................................ ................................ ... 8 5 钻前准备 ................................ ................................ ........... 9 钻前准备内容 ................................ ................................ ... 9 钻井工程准备 ................................ ................................ .. 10 钻井液准备 ................................ ................................ .... 10 钻前验收 ................................ ................................ ...... 10 6 钻进施工 ................................ ................................ .......... 10 定向钻进 ................................ ................................ ...... 10 钻井液性能监控 ................................ ................................ 11 简易水文观测 ................................ ................................ .. 11 井内复杂情况预防与处理 ................................ ........................ 11 钻井井史 ................................ ................................ ...... 11 7 水平井轨迹控制 ................................ ................................ .... 11 准备 ................................ ................................ .......... 11 轨迹控制 ................................ ................................ ...... 12 安全措施 ................................ ................................ ...... 13 8 固井施工 ................................ ................................ .......... 13 准备 ................................ ................................ .......... 13 套管准备 ................................ ................................ ...... 14 施工 ................................ ................................ .......... 14 套管柱试压 ................................ ................................ .... 14 9 侧钻 ................................ ................................ .............. 14 水泥塞螺杆钻具侧钻 ................................ ............................ 14 悬空侧钻 ................................ ................................ ...... 15 DB34/T 43 81—2023 II 10 煤层气井井控 ................................ ................................ ...... 15 11 钻井完井交接验收 ................................ ................................ .. 16 交接验收程序 ................................ ................................ .. 16 井身质量验收 ................................ ................................ .. 16 固井质量验收 ................................ ................................ .. 16 完井质量验收 ................................ ................................ .. 17 井场环保验收 ................................ ................................