Flocculation, coalescence and migration of dispersed phase droplets and oil-water separation in heavy oil emulsion

被引：114
|
作者：
Kang, Wanli [1 ,2 ]
Guo, Liming [1 ]
Fan, Haiming [1 ]
Meng, Lingwei [1 ]
Li, Yuhui [3 ]
机构：
[1] China Univ Petr, EOR Res Ctr, Qingdao 266555, Shandong, Peoples R China
[2] China Univ Petr, EOR Res Inst, Beijing 102249, Peoples R China
[3] China Huayou Grp Corp, Beijing 100107, Peoples R China
来源：
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING | 2012年 / 81卷
基金：
中国国家自然科学基金;
关键词：
heavy oil emulsion; stability; demulsification; droplet size; phase separation; demulsifier; INTERFACIAL RHEOLOGY; STABILITY;
D O I：
10.1016/j.petrol.2011.12.011
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The oil-water separation and dispersed phase droplet or flocculate droplet or flocculate size variation in the heavy oil emulsion were analyzed by using the Turbiscan Lab stability analyzer. The demulsification process of the heavy oil emulsion was described as well. The results indicated that three-phase separation took place slowly in the heavy oil emulsion and the emulsion middle layer finally formed between the oil phase and water phase, and the demulsification was mainly caused by the dispersed phase droplets sedimentation. After the chemical demulsifier was added into the emulsion, two-phase separation took place quickly, the emulsion stability data accurately conformed to the emulsion stability model based on the two-phase separation. Comparing the characteristic of the demulsification process of the heavy oil emulsion before and after the addition of demulsifier, it indicated that the coalescence of the dispersed phase droplets is the controlling factor and crucial step of the demulsification. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：177 / 181
页数：5
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