煤矿区煤层气开发部署方法  

Method on well pattern arrangement of coalbed methane(CBM) development in coalmine area

作　　者：张培河[1] 白建平 

机构地区：[1]煤炭科学研究总院西安研究院,陕西西安710054 [2]沁水蓝焰煤层气有限责任公司,山西晋城048024

出　　处：《煤田地质与勘探》2010年第6期33-36,42,共5页Coal Geology & Exploration

基　　金：国家科技重大专项项目(2008ZX05040);国家重点基础研究发展计划(973计划)项目(2009CB2196)

摘　　要：煤矿区煤层气的开发部署,受煤炭采掘规划和采掘布置的影响。基于我国目前的煤层气勘探开发现状,以晋城矿区为例,提出了煤层气开发部署原则,设计了井网优化部署方案,并进行了开发潜力及瓦斯治理效果分析。随着煤炭采掘的不断推进,煤矿区煤层气开发的地面垂直井形式会发生变化,即由起初单纯的地面垂直井转化为地面采动区井,而后可转化为地面采空区井。在地面垂直井阶段,气井连续排采10a,累计产气量为576.44×104m3,目标煤层瓦斯含量降幅约为27.17%～51.99%。通过地面采动区井和地面采空区井阶段的瓦斯抽采,可使瓦斯抽采率进一步提高,达到有效治理瓦斯的目的。According to the analysis of status on CBM development in China,method on well pattern arrangement of CBM development in coalmine area is studied.The arrangement of well pattern is controlled by plan and design of coal mining.Based on the plan and design of coal mining and the geological conditions of Jincheng coal mine area,the principles of CBM development in coalmine area are analyzed,and the well pattern arrangement is de-signed,and potential of CBM development and effect of gas control are studied.The format of CBM well is changed by influence of coal excavation,the recovery of CBM resource is about 27.17%~51.99%when the wells as surface vertical wells produce for 10 years.Afterward,gob well and gas extraction on ground are more effective for gas control.

关 键 词：煤矿区 煤层气开发 井网部署 

分 类 号：P618.11[天文地球—矿床学]