Molecular dynamics simulation of magnetic field influence on waxy crude oil

2018 ◽  
Vol 249 ◽  
pp. 1052-1059 ◽  
Author(s):  
Xuejiao Chen ◽  
Lei Hou ◽  
Wenchao Li ◽  
Shiyao Li ◽  
Yujie Chen
Keyword(s):  
Magnetic Field ◽  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Crude Oil ◽  
Dynamics Simulation ◽  
Waxy Crude Oil ◽  
Waxy Crude ◽  
Field Influence

scholarly journals Transport Properties of Waxy Crude Oil: A Molecular Dynamics Simulation Study

ACS Omega ◽  
2020 ◽  
Vol 5 (30) ◽  
pp. 18557-18564
Author(s):  
Xuejiao Chen ◽  
Lei Hou ◽  
Xiaoyu Wei ◽  
Dmitry Bedrov
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Crude Oil ◽  
Transport Properties ◽  
Simulation Study ◽  
Dynamics Simulation ◽  
Waxy Crude Oil ◽  
Waxy Crude

Molecular Dynamics Study on Microscopic Mechanism of Dissolution, Diffusion and Aggregation Process for Waxy Molecules in the Process of Waxy Crude Oil Pipeline Transportation

2019 ◽  
Author(s):  
Yifan Gan ◽  
Qinglin Cheng ◽  
Zhihua Wang ◽  
Jinwei Yang ◽  
Wei Sun ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Crude Oil ◽  
Dynamics Simulation ◽  
Precipitation Process ◽  
Pipeline Transportation ◽  
Waxy Crude Oil ◽  
Wax Precipitation ◽  
Waxy Crude ◽  
Oil Pipeline ◽  
Transportation Process

Abstract In order to ensure the safe and economic operation of waxy crude oil transportation process, the micro-dynamic mechanism and thermodynamic characteristics of wax precipitation process at nanoscale are necessary to be revealed. Here, we established the molecular dynamics model to characterize the phase transition and precipitation behavior of waxy molecules in multiphase system (including oil, asphaltene and water), the relative error between simulated results and experimental data measured by Dutour et al. (2002) is less than 5%. Under the coupling effect of different operation parameters, the molecular dynamics simulation was employed, the simulated results showed that the spherical paraffin crystals underwent the process of dissolution, diffusion and aggregation, then the waxy cluster crystals with larger amount but smaller volume would form, and it would deposit on the outer wall under the concentration gradient. The influence mechanism of different operating parameters on wax precipitation was analyzed, of which the increase of temperature and water cut will decrease the wax precipitation, while the increase of pressure will enhance the wax precipitation rate, furthermore, by means of the hydrogen bonding and the effect of similar dissolution, the water and asphaltene molecules also affect the wax precipitation process at molecular-scale. The researches of this paper provide the theoretical support for the paraffin removal and control in waxy crude oil pipeline transportation process.

Molecular dynamics simulation of the magnetic field influence on the oil-water interface

2020 ◽  
Vol 522 ◽  
pp. 112761
Author(s):  
Kosar Khajeh ◽  
Habib Aminfar ◽  
Mousa Mohammadpourfard
Keyword(s):  
Magnetic Field ◽  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Dynamics Simulation ◽  
Water Interface ◽  
Oil Water ◽  
The Magnetic Field ◽  
Field Influence

Molecular Dynamics Simulation Reveals Unique Rheological and Viscosity–Temperature Properties of Karamay Heavy Crude Oil

2021 ◽  
Author(s):  
Huajian Zhu ◽  
Shengfei Zhang ◽  
Xiuluan Li ◽  
Desheng Ma ◽  
Xinge Sun ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Crude Oil ◽  
Dynamics Simulation ◽  
Heavy Crude Oil ◽  
Heavy Crude

Molecular Dynamics Study on the Radial Deposition and Adhesion Process for the Waxy Crude Oil Tube Transport System and Effect-Principle of Features in Construction

2021 ◽  
Author(s):  
Qinglin Cheng ◽  
Yifan Gan ◽  
Zhihua Wang ◽  
Wei Sun ◽  
Shuang Wang ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Crude Oil ◽  
Transport System ◽  
Waxy Crude Oil ◽  
Waxy Crude ◽  
Adhesion Process

Wettability alterations and magnetic field effects on the nucleation of magnetic nanofluids: A molecular dynamics simulation

2018 ◽  
Vol 260 ◽  
pp. 209-220 ◽  
Author(s):  
M.H. Taheri ◽  
M. Mohammadpourfard ◽  
A.K. Sadaghiani ◽  
A. Kosar
Keyword(s):  
Magnetic Field ◽  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Dynamics Simulation ◽  
Magnetic Field Effects ◽  
Field Effects ◽  
Magnetic Nanofluids
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