Effect of water salinity and rock components on wettability alteration during low-salinity water flooding in carbonate rocks

被引：0
|
作者：
Wenbo Su
Yuetian Liu
Jian Pi
Rukuan Chai
Changyong Li
Yunpeng Wang
机构：
[1] China University of Petroleum,State Key Laboratory of Petroleum Resources and Prospecting
[2] Development Research Department of CNOOC Research Institute,undefined
来源：
Arabian Journal of Geosciences | 2018年 / 11卷
关键词：
Low-salinity water; Contact angle; Salinity; Carbonate rock;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this paper, contact angle measurements using crude oil, five carbonate rocks, and six brines were conducted to study the effect of water salinity and rock components on wettability alteration. The results showed that lowering water salinity results in wettability alteration of carbonate surfaces to more water-wet. And there exists an optimal salinity at which the maximum wettability alteration occurs. In addition, the optimal salinity tends to increase as the content of dolomite in the rock decreases gradually. When low-salinity water is kept the same, the lower dolomite content in the carbonate rock, the more water-wet the rock will tend to be.
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