CAJ | 학술논문

基于CO2气体性质的特殊性以及CO2泡沫在多孔介质中表现出不同于其他气体泡沫的现象，利用气流法，选用十二烷基苯磺酸钠（SDBS）作为起泡剂，研究了 CO2泡沫的稳定性和衰减规律，以及聚合物部分水解聚丙烯酰胺（HPAM）对CO2泡沫性能的影响。结果表明，在相同条件下，CO2泡沫的稳定性比N2泡沫差，并且CO2泡沫的稳定性基本不受表面活性剂浓度的影响；CO2泡沫的衰减曲线近似一条直线，泡沫形成后体积迅速减小。CO2在水中具有较大的溶解度，泡沫的液膜渗透率系数大，因而泡沫稳定性差，也是造成CO2泡沫在岩心内渗流规律区别于 N2泡沫的一个重要原因。HPAM 的加入可以在一定程度上增强 CO2泡沫的稳定性，但同时也会使溶液起泡性能降低，所以实际应用时需要综合考虑泡沫特性，选择最佳的聚合物浓度。
기우CO2기체성질적특수성이급CO2포말재다공개질중표현출불동우기타기체포말적현상，이용기류법，선용십이완기분광산납（SDBS）작위기포제，연구료 CO2포말적은정성화쇠감규률，이급취합물부분수해취병희선알（HPAM）대CO2포말성능적영향。결과표명，재상동조건하，CO2포말적은정성비N2포말차，병차CO2포말적은정성기본불수표면활성제농도적영향；CO2포말적쇠감곡선근사일조직선，포말형성후체적신속감소。CO2재수중구유교대적용해도，포말적액막삼투솔계수대，인이포말은정성차，야시조성CO2포말재암심내삼류규률구별우 N2포말적일개중요원인。HPAM 적가입가이재일정정도상증강 CO2포말적은정성，단동시야회사용액기포성능강저，소이실제응용시수요종합고필포말특성，선택최가적취합물농도。
Considering the special nature of CO2 and the behavior of CO2 foam in the porous medium different from foams of other gases, CO2 foam stability, decay property of CO2 foam and effect of partially hydrolyzed polyacrylamide (HPAM) on CO2 foam properties were studied. The gas-flow method was used for foaming and sodium dodecyl benzene sulfonate (SDBS) was used as the foaming agent. The stability of CO2 foam was worse than that of N2 foam under the same conditions and was nearly not influenced by surfactant concentration. Besides, the decay curve of CO2 foam was approximately a straight line and the volume of CO2 foam decreased rapidly after foaming. An important factor leading to the poor stability of CO2 foam lay on the large film permeability coefficient because of higher solubility of CO2 in water, which further led to the different propagation behavior of CO2 foam from N2 foam in the core. The adding of polymer HPAM enhanced the stability of CO2 foam to a certain extent, but reduced the foaming property of surfactant solution. Therefore, both foam stability and foaming property of surfactant solution should be considered to determine the optimal concentration of polymer in the actual application.