CAJ | 학술논문

以SN油田S7块油藏为例研究了表面活性剂进入多孔介质后,在岩石/油/水这个复杂系统中的渗流、驱油过程.表面活性剂对残余油的作用机理分为乳化、运移、富集3个方面.低界面张力体系能使油珠分散,使油珠直径变小,使油珠易于流动.实验研究表明,注入表面活性剂后,相对渗透率曲线发生变化,水相曲线左移,液相渗透率明显提高,残余饱和度减少.
이SN유전S7괴유장위례연구료표면활성제진입다공개질후,재암석/유/수저개복잡계통중적삼류、구유과정.표면활성제대잔여유적작용궤리분위유화、운이、부집3개방면.저계면장력체계능사유주분산,사유주직경변소,사유주역우류동.실험연구표명,주입표면활성제후,상대삼투솔곡선발생변화,수상곡선좌이,액상삼투솔명현제고,잔여포화도감소.
Taking the S7 reservoir of SN Oilfield as an example,a study is made of flow and oil displacement process of surfactant in the complex rock/oil/water system after it enters porous media. Surfactant effects on residual oil include the following three aspects:emulsion,migration and enrichment. Low interfacial tension system can make the oil disperse,then the oil droplets become smaller,so it is easy to flow. Experimental studies show,after injection of surfactant,relative permeability curve changes,phase curve shifts to the right,and liquid phase permeability increases,reducing residual saturation.