摘要
针对CO2注入增产煤层气问题,在分析CO2注入增产煤层气的作用机理基础上,利用已有试验资料分析了煤级、压力、温度和湿度等因素对CO2注入增产煤层气技术的影响。研究表明:温度对注入效果影响不大,而湿度增加能极大的抑制CO2吸附,从而影响CO2注入增产效果。为了取得较好的CO2注入增产效果,煤级应较高,注入煤层埋置深度宜为400～600 m和1100 m～1500 m之间,煤岩的渗透率宜在0.5×10-3μm2～5×10-3μm2之间,且煤岩断裂构造不发育。
The injection of CO2 is a new technique for reducing green house methane and enhancing coalbed methane production. On the basis of mechanism analysis for enhancing coalbed methane production with CO2 injection, the effects of some pamarates such as coal rank, pressure, temperature and moisture on the CO2 injection were analyzed with previous experiment data. results show： The temperature has little effect, but the moisture markedly reduced CO2 sorption and influenced the injection effects. To effectively enhance coalbed methane production with CO2 injection, high rank coal, suitable embedment of 400~600 m or 1100 - 1500 m, suitble permeability of 0.5 × 10^-3μm2-5 × 10^-3μm2 and minimal faults are the important factors.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2009年第A02期54-56,共3页
Journal of Liaoning Technical University (Natural Science)
关键词
CO2注入
增产煤层气
煤级
压力
渗透率
CO2 injection
enhancing coalbed methane
coal rank
pressure
permeability
