淮南矿区抽采瓦斯地面钻井施工关键技术应用

Key Technologies of Ground Drilling Construction for Gas Extraction in Huainan Mining Area

摘要:

针对淮南矿区煤矿瓦斯抽采地面钻井施工，对常规钻进垂直成井与完井工艺的施工设备、钻井方案、下管与固井、垂钻技术、钻井结构进行优化选择，采用国产PDC掏穴钻头与长井段掏穴钻进技术，提高地面钻井稳定性和瓦斯抽采效率。结合生产实际，阐述了此种组合钻进成井工艺技术的特点。

Abstract:

In the ground drilling construction for gas extraction in Huainan mining area， optional selection was made on construction equipment， drilling program， pipe lowering and cementing， vertical drilling technology and drilling well structure for conventional vertical well drilling and completion technology. China-made PDC digging bit and long well segment digging bit technologies are used to improve ground drilling stability and the gas extraction efficiency. By the production practice， the paper describes the characteristics of this combined well drilling and completion technology.