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Molecular Dynamics Simulations of Dodecane Detachment from Hydrophobic SiO2 Surfaces in CTAB Solutions. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Tang X, Xiao S, Lei Q, Yuan L, Peng B, He L, Luo J, Pei Y. Molecular Dynamics Simulation of Surfactant Flooding Driven Oil-Detachment in Nano-Silica Channels. J Phys Chem B 2018; 123:277-288. [DOI: 10.1021/acs.jpcb.8b09777] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Xianqiong Tang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Department of Chemistry, Xiangtan University, Xiangtan 411105, P. R. China
- Department of Civil Engineering and Mechanics, Xiangtan University, Xiangtan 411105, P. R. China
| | - Shaofei Xiao
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Department of Chemistry, Xiangtan University, Xiangtan 411105, P. R. China
| | - Qun Lei
- Research Institute of Petroleum Exploration & Development (RIPED), PetroChina, Beijing 100083, P. R. China
| | - Lingfang Yuan
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Department of Chemistry, Xiangtan University, Xiangtan 411105, P. R. China
| | - Baoliang Peng
- Research Institute of Petroleum Exploration & Development (RIPED), PetroChina, Beijing 100083, P. R. China
- Key Laboratory of Nano Chemistry (KLNC), CNPC, Beijing 100083, P. R. China
| | - Lipeng He
- Research Institute of Petroleum Exploration & Development (RIPED), PetroChina, Beijing 100083, P. R. China
- Key Laboratory of Nano Chemistry (KLNC), CNPC, Beijing 100083, P. R. China
| | - Jianhui Luo
- Research Institute of Petroleum Exploration & Development (RIPED), PetroChina, Beijing 100083, P. R. China
- Key Laboratory of Nano Chemistry (KLNC), CNPC, Beijing 100083, P. R. China
| | - Yong Pei
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Department of Chemistry, Xiangtan University, Xiangtan 411105, P. R. China
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Fan JC, Wang FC, Chen J, Zhu YB, Lu DT, Liu H, Wu HA. Molecular mechanism of viscoelastic polymer enhanced oil recovery in nanopores. ROYAL SOCIETY OPEN SCIENCE 2018; 5:180076. [PMID: 30110436 PMCID: PMC6030297 DOI: 10.1098/rsos.180076] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 05/16/2018] [Indexed: 06/08/2023]
Abstract
Polymer flooding is a promising chemical enhanced oil recovery (EOR) method, which realizes more efficient extraction in porous formations characterized with nanoscale porosity and complicated interfaces. Understanding the molecular mechanism of viscoelastic polymer EOR in nanopores is of great significance for the advancement of oil exploitation. Using molecular dynamics simulations, we investigated the detailed process of a viscoelastic polymer displacing oil at the atomic scale. We found that the interactions between polymer chains and oil provide an additional pulling effect on extracting the residual oil trapped in dead-end nanopores, which plays a key role in increasing the oil displacement efficiency. Our results also demonstrate that the oil displacement ability of polymer can be reinforced with the increasing chain length and viscoelasticity. In particular, a polymer with longer chain length exhibits stronger elastic property, which enhances the foregoing pulling effect. These findings can help to enrich our understanding on the molecular mechanism of polymer enhanced oil recovery and provide guidance for oil extraction engineering.
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Affiliation(s)
- Jing Cun Fan
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, University of Science and Technology of China, Hefei, Anhui 230027, People's Republic of China
| | - Feng Chao Wang
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, University of Science and Technology of China, Hefei, Anhui 230027, People's Republic of China
| | - Jie Chen
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, University of Science and Technology of China, Hefei, Anhui 230027, People's Republic of China
- Zhongtian Technology Submarine Cables Co., Ltd., Nantong, Jiangsu 226010, People's Republic of China
| | - Yin Bo Zhu
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, University of Science and Technology of China, Hefei, Anhui 230027, People's Republic of China
| | - De Tang Lu
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, University of Science and Technology of China, Hefei, Anhui 230027, People's Republic of China
| | - He Liu
- PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, People's Republic of China
| | - Heng An Wu
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, University of Science and Technology of China, Hefei, Anhui 230027, People's Republic of China
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