大口径瓦斯抽排井施工扩孔分级设计优选探讨  

Discussion on Optimization of Reaming Grading Design of Large Diameter Gas Drainage Well Construction

作　　者：袁志坚[1,2] 熊亮[1,2] 

机构地区：[1]河南省能源钻井工程技术研究中心,河南郑州450018 [2]河南省煤田地质局,河南郑州450018

出　　处：《探矿工程（岩土钻掘工程）》2014年第11期17-19,共3页Exploration Engineering:Rock & Soil Drilling and Tunneling

摘　　要：受现有钻探设备能力限制,大口径瓦斯抽排井工程通常采用"先导钻进+分级扩孔"施工方法。通过扩孔所需回转扭矩的计算分析,对常用大口径瓦斯抽排井扩孔分级的设计进行了探讨。Being confined to the capacity of existing drilling equipments,usually ＂pilot drilling ＋ hierarchical reaming＂construction method is used for gas drainage well. By the analysis and calculation of the rotary torque required by reaming,the discussion is made on reaming grading design of the common used large diameter gas drainage well.

关 键 词：大口径瓦斯抽排井 扩孔分级 优选 

分 类 号：P634[天文地球—地质矿产勘探]