4.7 Article

Atomistic insight into oil displacement on rough surface by Janus nanoparticles

期刊

ENERGY
卷 245, 期 -, 页码 -

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2022.123264

关键词

Janus nanoparticles; Oil recovery; Molecular dynamics simulation; Rough surface; Wettability alteration

资金

  1. Research Council of Norway [234626]
  2. Chinese Scholarship Council
  3. Norwegian Metacenter for Computational science [NN9110K, NN9391K]

向作者/读者索取更多资源

Janus nanoparticles (NPs) have the potential to enhance oil recovery (EOR), and this study uses atomistic modeling to uncover the displacement dynamics of trapped oil in rough channels by Janus NPs. The results show that Janus NPs with large polar faces can recover more oil from nano-pockets on the surface. The structure of adsorbed NPs on the walls of oil-trapping nano-pockets causes local wettability alteration, which determines the oil recovery. The study identifies the crucial events in oil recovery by Janus NPs and provides detailed information on the controlling factors.
Janus nanoparticles (NPs) hold great potential in enhanced oil recovery (EOR), although the mechanism remains unclear. In the study, the displacement dynamics of trapped oil in the rough channel by Janus NPs are unraveled through atomistic modeling. The results indicate that Janus NPs with large polar faces significantly recover more oil from the nano-pocket (nano groove of the surface). The structure of adsorbed NPs on the wall of oil-trapping nano-pockets strongly causes the local wettability alteration, which ultimately determines the oil recovery. The crucial events in oil recovery by Janus NPs, termed 'adsorption invasion process', are identified, which comprise of anchoring onto the surface, pinning at the edge, and entering inside the pocket. The controlling factors are further detailed, including identification of the residual oil, displacement pressure, and the geometry of the oil-water interface inside nano-pockets. With the proposed analysis, the huff-n-puff mode is verified as the optimized application method for Janus NPs. For the first time, our results bring to light the dynamic wettability alteration on the rough surface by Janus NPs from atomistic insights. The findings reveal the intrinsic EOR mechanism of Janus NPs, which could guide the design and application of Janus NPs in EOR.(c) 2022 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据