Experimental investigation of surfactant enhanced spontaneous imbibition in Chinese shale oil reservoirs using NMR tests

被引：61
|
作者：
Liu, Junrong [1 ]
Sheng, James J. [1 ,2 ]
机构：
[1] China Univ Petr, Beijing, Peoples R China
[2] Texas Tech Univ, Lubbock, TX 79409 USA
来源：
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2019年 / 72卷
关键词：
Shale Oil; Spontaneous imbibition; Surfactant; NMR; WETTABILITY ALTERATION; GAS; WATER; CLASSIFICATION; MICROSCOPY; MIGRATION; EOR;
D O I：
10.1016/j.jiec.2018.12.044
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Surfactant enhanced spontaneous imbibition is an effective method to enhance oil recovery in shale reservoirs, however the mechanism is still unclear. This work attempts to investigate the effect of added surfactants on the spontaneous imbibition into shale rocks using NMR tests. Contact angles and IFT are measured to evaluate the efficiency of different surfactants in terms of wettability alteration and IFT reduction. According to the experimental results, the studied anionic surfactants perform better on the wettability alteration of shale rocks than studied nonionic surfactants, and the key factor to enhance the shale oil recovery may be wettability alteration. (C) 2018 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：414 / 422
页数：9
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