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在沁水盆地南部TL-003井进行了单井注入CO2提高煤层气采收率试验。采用间歇式注入方式,共向3号煤层注入192.8t液态CO2。生产和储层模拟评价结果表明,大部分CO2被煤层吸附,能显著提高单井产量和采收率。多井试验模拟显示,在沁南无烟煤煤层中注入CO2,能显著地提高煤层气采收率,同时实现了埋藏CO2的目标。
In the south of Qinshui Basin TL-003 wells were injected with single-well CO2 to improve CBM recovery experiments. Using intermittent injection, a total of 192.8t of liquid CO2 was injected into No.3 coal seam. Production and reservoir simulation results show that most of the CO2 is adsorbed by the coal seam, which can significantly increase single-well production and oil recovery. Multi-well test simulations show that injection of CO2 into Qinan anthracite coal seam can significantly improve CBM recovery efficiency and achieve the goal of CO2 burial.