沁水盆地CO_2地质封存及驱替煤层气选区数值模拟研究

Numerical Simulation on Geological Sequestration of CO_2 and Coalbed Methane Displacement

以山西省沁南盆地深部煤层为研究对象,结合研究区周边地质资料、深部钻井数据,利用Eclipse软件对该区域CO_2地质封存及驱替煤层气(CO_2-ECBM)过程进行数值模拟及相关研究。结果表明,该研究区适合开展CO_2-ECBM相关工作的优选区为Q-2,其模拟所得煤层气的产气量、CO_2封存量数据均优于区内其他区域。同时研究结果也揭示了深部煤储层渗透率的改善,是将来CO_2封存和ECBM取得理想效果的关键。

Taking deep coal seam in Qinnan Basin as the study object, combined with peripheral geological data and deep drilling data, Eclipse software was used to simulate the process of geological sequestration of CO2 and enhanced coalbed methane displacement （CO2-ECBM）. The results show that, in that area, the optimal area is Q-2, which is suitable for related work of CO2-ECBM, since the simulated gas production and sequestration data of CO2 are better than other areas. Meanwhile, the results also reveal that the improvement on the permeability of deep coal reservoir is the key to ideal effects of the process of CO2-ECBM.