摘要
针对辽河油田区块的油藏条件,在室内进行了无碱二元驱和弱碱三元驱提高原油采收率的研究。对3种表面活性剂SL-YD、HL-1、BH进行了筛选,优选出了对该地层原油具有最佳降低界面张力效果的表面活性剂SLYD和HL-1;然后与聚合物PAM复配,组成二元体系,最佳配方为0.16%PAM+0.20%SL-YD;最后筛选得出了弱碱三元体系0.16%PAM+0.15%SL-YD+0.30%Na2CO3。室内实验表明,无碱二元体系和弱碱三元体系可以使油水界面张力降到10-3mN/m以下,可以大幅度提高原油的采收率,增幅超过10%。
Study on increase of oil recovery using surfactant/ polymer was carried out according to the con-dition of oil formation in the Liaohe oilfield,in order to get standard of oil industry. One kind of surfactants suitable for polymer was selected from three kinds of surfactants;then,the best surfactant/ polymer binary flooding system was 0. 16% PAM ＋ 0. 20% SL-YD. The best alkalescent trial chemical flooding system was 0. 16% PAM ＋ 0. 15% SL-YD ＋ 0. 30% Na2 CO3 . The research show that interfacial tension between oil and water could decrease to 10 - 3 mN/ m,it can improve oil recovery increased by over 10% .
出处
《应用化工》
CAS
CSCD
2014年第5期898-900,904,共4页
Applied Chemical Industry
关键词
化学驱
界面张力
热稳定性
驱油效率
chemical flooding system
interfacial tension
thermal stability
oil displacement efficiency
