期刊
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
卷 179, 期 -, 页码 276-291出版社
ELSEVIER
DOI: 10.1016/j.petrol.2019.04.049
关键词
Engineered water injection; Smart waterflooding; Low salinity; Carbonates; Physical and chemical mechanisms of recovery; Improved oil recovery
资金
- Centre for Oil and Gas, Technical University of Denmark (DTU)
- Ministry of Science, Research and Technology of Iran
The goal of the present paper is to provide a comprehensive review of the literature describing the physical and chemical mechanisms for enhanced oil recovery under smart waterflooding in carbonate reservoirs. Advanced, or smart waterflooding is a term denoting directed alteration of the ionic composition of the injected brine in order to achieve a better oil recovery, in particular, the low salinity flooding. While injection of a low salinity brine in sandstones is well described, the acting mechanisms of advanced waterflooding are not fully clarified, and only few reservoir-scale tests have been carried out. Demonstration and comparison of the different phenomena explaining the effect of smart waterflooding are the goals of the present review. Unlike the previous such reviews, we do not only concentrate on the phenomena occurring on the rock-brine-oil interfaces, but also address dynamic phenomena caused by flow, like fluid diversion and emulsification. The paper comprises an upto-date information, classification and guidance and, consequently, is intended to serve advancing the research in the area of smart waterflooding in carbonates.
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