高校化学工程学报Issue(4)：669-675,7.DOI:10.3969/j.issn.1003-9015.2013.04.020
Washburn高度法对新型双季铵盐复配改性膨润土的润湿性研究
The Washburn Height Rise Method Used to Study the Wettability of Bentonite Modified by New Type Compounded Bis-Quaternary Ammonium Salts
胡昭朝 1高芒来 1谷峥 1罗忠新 1薛广海1
作者信息
- 1. 中国石油大学 北京 重质油国家重点实验室 理学院，北京102249
- 折叠
摘要
Abstract
Washburn’s equation is a useful tool for studying the wettability of powder, but it has certain limitation in practice. In this paper, Washburn’s equation was transformed and its reliability was identified through the water and n-heptane wettability of bentonite modified by hexamethyl ethyl diammonium methylsulfate (EDAS) mixed with hexamethyl hexyl diammonium methylsulfate (HDAS). In addition, the effects of different concentrations and component ratios of the modifier on the wettability of modified bentonite were compared. The results show that the water wettability of modified bentonite is stronger than that of sodium bentonite, while the n-heptane wettability of modified bentonite is weaker. Meanwhile, the order of modifying has little effect on the water wettability of 50% HDAS, and the water wettability of bentonite modified with 25%HDAS and 75%HDAS are stronger than that of bentonite modified with any other component ratios. The oil water relative wettability coefficientβreaches its highest value when bentonite modified with 25%HDAS at 1.5 CEC, which indicates that the wettability of strong oil-wet rock can be converted by bentonite modified with such condition.关键词
Washburn方程/双季铵盐/复配/改性膨润土/润湿性Key words
Washburn’s equation/bis-quaternary ammonium salts/compounded/modified bentonite分类
能源科技引用本文复制引用
胡昭朝,高芒来,谷峥,罗忠新,薛广海..Washburn高度法对新型双季铵盐复配改性膨润土的润湿性研究[J].高校化学工程学报,2013,(4):669-675,7.
