CAJ | 학술논문

结合沁水盆地南部某煤层气区块的地质特征，利用Eclipse E300三维双重孔隙介质多组分模拟器，进行了煤层气井排采强度对产气量敏感性的数值模拟。研究发现，在给定的地质条件下，排采强度存在合理值。根据优选结果，日降液面速率以6 m/d起降；当井底流压接近0.8倍原始储层压力时，速率调整为4 m/d；当井底流压接近临界解吸压力时，速率调整为2 m/d；进入稳产阶段时以1 m/d的速率排采，可以得到最好的产气效果。该结论对煤层气井的现场排采具有一定的参考意义。
결합심수분지남부모매층기구괴적지질특정，이용Eclipse E300삼유쌍중공극개질다조분모의기，진행료매층기정배채강도대산기량민감성적수치모의。연구발현，재급정적지질조건하，배채강도존재합리치。근거우선결과，일강액면속솔이6 m/d기강；당정저류압접근0.8배원시저층압력시，속솔조정위4 m/d；당정저류압접근림계해흡압력시，속솔조정위2 m/d；진입은산계단시이1 m/d적속솔배채，가이득도최호적산기효과。해결론대매층기정적현장배채구유일정적삼고의의。
Combined with geological characteristics of some CBM block in southern Qinshui basin, the Eclipse E300 3D double po-rosity multicomponent simulator is used to carry out the sensitivity numerical simulation of production intensity on the gas produc-tion rate of CBM wells. The researches find out that, under the given geological conditions, the drainage intensity has reasonable value. According to the optimization results, daily liquid level reduction rate begins with 6 m/d. When the bottom hole flowing pres-sure (BHFP) is close to 0.8 times of the original reservoir pressure, the rate changes to 4 m/d. When BHFP is close to the critical de-sorption pressure, the rate changes to 2 m/d. When in the stable production stage, the rate changs to 1 m/d and the best gas produc-ing effect can be obtained. This conclusion has a certain reference value for the field production of CBM wells.