The utility model provides a downhole gas drainage device, which includes: gas discharge pipe and the sleeve is sleeved on the sleeve for the pipe and is provided with an opening through the first tube and the gas discharge pipe outlet connection. The downhole drilling and drainage device provided by the utility model can effectively eliminate the gas generated by a large number of underground drilling holes, thereby improving the safety and reliability of operation.
【技术实现步骤摘要】
【技术保护点】
1.一种井下钻孔抽排瓦斯装置,其特征在于,包括:瓦斯排放管路;套筒,用于套设在钻杆外,所述套筒上设有开口,所述开口通过第一软管与所述瓦斯排放管路的通道口连接。
【技术特征摘要】
【专利技术属性】
技术研发人员:黄永会,常德喜,江东明,王虎,蔡超,王中米,孙志刚,郑礼军,罗华兵,曹兴,
申请(专利权)人:淮南矿业集团有限责任公司,
类型:实用新型
国别省市:34
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。