摘要
为了查明山西沁南地区煤层气井3号和15号煤层合层排采是否可行,根据煤层气垂直井产气特点,在系统分析煤层气垂直井合层排采的关键控制和影响因素基础上,得出产气液面高度、储层压力梯度、供液能力和渗透率的差异是影响两层煤合层排采的主控因素,并得出其合层排采的适合条件;根据沁南地区寺河矿区煤层气井勘探开发资料,从4个方面系统剖析了寺河矿区是否适合合层排采。研究结果表明:寺河矿区这些条件均满足,较适合合层排采。现场单层排采和两层煤合层排采的产气试验验证了理论分析的可靠性。
In order to find out the feasible co-layer drainage between No. 3 and No. 15 coal reservoir in the southern Qinshui Basin, according to the producing gas characteristics of CBM vertical wells, the factors of the height of the crit- ical production gas, the grades of reservoir pressure, the ability of supply for liquid and the permeability are the main controlling factors to influence the joint drainage, and the suitable conditions about the joint drainage was gained. Ac- cording to the the exploration data in Sihe block, the main controlling factors were analyzed. The results show that vari- ous controlling factors are suitable in Sihe block. The drainage experiment validates that the theory is reliable.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2012年第8期1354-1358,共5页
Journal of China Coal Society
基金
"十二五"国家科技重大专项"山西晋城矿区采气采煤一体化煤层气开发示范工程资助项目(2011ZX05063)
关键词
煤层气井
单层排采
合层排采
主控因素
寺河矿区
CBM wells
single layer drainage
co-layer drainage
main controlling factor
Sihe block
