煤田地质与勘探2017，Vol.45Issue(4)：81-84,93,5.DOI:10.3969/j.issn.1001-1986.2017.04.014
芦岭煤矿碎软低渗煤层高效抽采技术
Technology of CBM extraction in the crushed and soft coal seam in Luling coal mine
摘要
Abstract
The horizontal drilling is inclined to collapse in crushed and soft coal seam,and it is difficult to extract coalbed methane(CBM) on the surface.Based on the advanced development technology for shale gas and tight sand gas,enhanced CBM extraction technology by stimulated horizontal well drilled in the roof of crushed and soft coal is studied,and the procedure of horizontal drilling in roof,oriented perforating and staged fracturing is optimized.Using the technology,horizontal well LG01 was completed in Luling coal field,Anhui Province.The testing shows that the daily CBM production from this well is more than 1.0× 104 m3,the production is beyond four times of that from local vertical wells,and it is a successful and brand-new method to extract CBM from crushed and soft coal seam.关键词
碎软煤层/地面煤层气/煤层顶板水平井/定向射孔/分段压裂Key words
crushed and soft coal seam/surface CBM/horizontal well in coal roof/oriented perforating/staged fracturing分类
矿业与冶金引用本文复制引用
李彬刚..芦岭煤矿碎软低渗煤层高效抽采技术[J].煤田地质与勘探,2017,45(4):81-84,93,5.基金项目
国家科技重大专项项目(2011ZX05064)National Science and Technology Major Project(2011ZX05064) （2011ZX05064）
