地面U型钻井抽采低阶厚煤层瓦斯工艺的应用研究  

Study on Surface U-shaped Drilling Technology for CBM Extraction in Low-rank Thick Coal Seam

作　　者：程波[1,2] 罗伙根 张锋 CHENG Bo;LUO Huogen;ZHANG Feng(State Key Laboratory of the Gas Disaster Detecting,Preventing and Emergency Controlling,Chongqing 400037,China;CCTEG Chongqing Research Institute,Chongqing 400037,China;Baode Coal Mine,Shenhua Shendong Coal Group Co.,Ltd.,Baode 036600,China)

机构地区：[1]瓦斯灾害监控与应急技术国家重点实验室,重庆400037 [2]中煤科工集团重庆研究院有限公司,重庆400037 [3]神华神东煤炭集团有限责任公司保德煤矿,山西保德036600

出　　处：《矿业安全与环保》2019年第6期89-92,97,共5页Mining Safety & Environmental Protection

基　　金：国家科技重大专项(2016ZX05067004-004,2016ZX05043005-003);国家自然科学基金项目(51774319)

摘　　要：为解决我国煤矿区低阶厚煤层高效开采煤层气的难题,以神东煤炭集团保德煤矿二盘区煤层为研究区,通过技术方案的比选,提出了采用地面U型钻井抽采低阶厚煤层气藏资源的方法。结果表明:通过近2 a的联合排采,所施工的地面U型钻井最高产气量为3133.241 m 3/d,累计产气量72.63万m 3,且连续231 d的产气量超过2400 m 3/d。该技术在保德煤矿低阶厚煤层中的成功应用,标志着我国煤矿区低煤阶储层煤层气勘探开发的跨越式发展,对保障国家能源安全、促进社会经济发展具有重要意义。In order to solve the problem of how to realize efficient extraction of CBM in low-rank, the second panel area of Baode Coal Mine in Shendong Coal Group were taken as research area. Through the comparison and selection of technical schemes, the method of using surface U-shaped drilling to extract low-rank thick CBM reservoir resources was put forward. The results show that after nearly 2 years of joint discharge and production, the daily maximum gas production of surface U-shaped drilling is 3 133.241 m 3/d, the cumulative gas production is 726 300 m 3, and for 231 consecutive days, the daily production exceeds 2 400 m 3/d. The successful application of surface U-shaped drilling technology in low-rank thick coal seam of Baode Coal Mine marks the leap-forward development in the extraction of low-rank CBM reservoirs in domestic coal mining areas. It is of great significance to ensure national energy security and promote social and economic development.

关 键 词：低煤阶 厚煤层 煤层气 抽采 U型钻井 

分 类 号：TD712[矿业工程—矿井通风与安全] TD713