聚凝体聚合物膨胀特性实验研究

Experimental study of dilatability of agglomerate polymer

为了解决水驱窜流严重和采收率低的问题,对聚凝体聚合物的抗酸、抗碱、抗盐以及热稳定性进行了评价实验。实验结果表明,在酸性、碱性和高盐条件下,聚凝体聚合物的吸水膨胀速度变慢,但充分吸水膨胀后的体积膨胀倍数仍能达到10倍左右,具有较强的化学稳定性和热稳定性,吸水膨胀性好,能够适应恶劣的油藏条件。岩石流动实验表明,聚凝体聚合物驱可在聚合物驱的基础上再提高采收率12%。

In order to lessen serious water crossflow and improve oil recover-y, a series of resistance to acid, alkali, salt experiments and thermal stability experiments are carried out for the agglomerate polymer. The results show that even though expansion rate after water imbibition of the agglomerate polymer becomes slow at acidity, basicity and high salt condition, the final expansion volume of it is up to 10 times than it is not been imbibed. So the agglomerate polymer may meet the need of high temperature and salinity reservoir for its good chemical stability, thermal stability and expansion rate. Core flood experiment shows that the agglomerate polymer flooding enhanced 12% oil recovery after polymer flooding.