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Study of a Novel Carboxylic Cellulose Nanofibrils-Ethoxylated Phytosterol-Alcohol Environmentally Friendly System on the Application in Enhanced Oil Recovery
Journal of Surfactants and Detergents ( IF 1.6 ) Pub Date : 2021-03-28 , DOI: 10.1002/jsde.12505
Jie Yuan 1, 2 , Dexin Liu 1 , Jiankang Li 2 , Jie Cui 2 , Hongtao Tang 2 , Xin Wei 1 , Juan He 1 , Xuehao Zhang 1 , Pan Huang 1 , Han Jia 1
Affiliation  

Bio-polymers and bio-surfactants have attracted increasing attention for their application in chemical enhanced oil recovery (EOR) due to the environmental concerns of synthetic chemical agents. Here, a ternary compound system consisted of carboxylic cellulose nanofibrils (CCNF), ethoxylated phytosterol (BPS), and n-pentanol was constructed. The rheological property and interfacial activity of the compound system and the effects of each component at high temperature (80 °C) was investigated systematically. The ternary compound system exhibited excellent performance in thickening, IFT reduction (<10−2 mN m−1), emulsification, and better salt tolerance. CBP, the ternary system of CCNF (2000 mg L−1), BPS (2000 mg L−1), and n-pentanol (5000 mg L−1), greatly enhanced the oil recovery (24.3%) in the core flooding tests by its high displacement efficiency and sweep enlargement, which was demonstrated directly in the visual micromodel flooding. As an eco-friendly system with remarkable performance, the compound system of CBP shows great application potential in EOR.

中文翻译:

一种新型羧基纤维素纳米纤丝-乙氧基化植物甾醇-醇环保体系在提高采收率中的应用研究

由于合成化学试剂的环境问题,生物聚合物和生物表面活性剂因其在化学提高采收率 (EOR) 中的应用而受到越来越多的关注。在这里,构建了由羧基纤维素纳米纤维 (CCNF)、乙氧基化植物甾醇 (BPS) 和正戊醇组成的三元复合体系。系统研究了复合体系的流变性能和界面活性以及各组分在高温(80℃)下的影响。三元复合体系在增稠、降低IFT(<10 -2 mN m -1)、乳化和更好的耐盐性方面表现出优异的性能。CBP,CCNF (2000 mg L -1 )、BPS (2000 mg L -1) 和正戊醇 (5000 mg L -1 ),通过其高驱替效率和波及扩大,在岩心驱油测试中大大提高了石油采收率(24.3%),这在可视化微观模型驱油中得到了直接证明。CBP复合体系作为一种性能卓越的环保体系,在提高采收率方面显示出巨大的应用潜力。
更新日期:2021-03-28
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