Synthesis and Molecular Dynamics Simulation of Amphiphilic Low Molecular Weight Polymer Viscosity Reducer for Heavy Oil Cold Recovery

In order to reduce the viscosity of heavy oil, the performance of emulsifying viscosity reducers is limited. In this study, a new kind of amphiphilic low molecular weight viscosity reducer was prepared by emulsion copolymerization of acrylamide (AM), acrylic acid (AA), 2-acrylamido-2-methylpropanesu...

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Autores principales:	Chao Ma, Xingyu Liu, Longlong Xie, Yan Chen, Wendong Ren, Wen Gu, Minghua Zhang, Huili Zhou
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	molecular dynamics simulation amphiphilic polymers hydrophobic monomer viscosity reduction of heavy oil viscosity reduction mechanism Technology T
Acceso en línea:	https://doaj.org/article/fc2709db06ab463488c26cdb15fb962a
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spelling	oai:doaj.org-article:fc2709db06ab463488c26cdb15fb962a2021-11-11T15:43:04ZSynthesis and Molecular Dynamics Simulation of Amphiphilic Low Molecular Weight Polymer Viscosity Reducer for Heavy Oil Cold Recovery10.3390/en142168561996-1073https://doaj.org/article/fc2709db06ab463488c26cdb15fb962a2021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/6856https://doaj.org/toc/1996-1073In order to reduce the viscosity of heavy oil, the performance of emulsifying viscosity reducers is limited. In this study, a new kind of amphiphilic low molecular weight viscosity reducer was prepared by emulsion copolymerization of acrylamide (AM), acrylic acid (AA), 2-acrylamido-2-methylpropanesulfonic acid (AMPS), and Butene benzene (PB). The synthesis feasibility and viscosity reduction mechanism of viscosity reducer in heavy oil were explored using Materials Studio software from the perspective of molecular dynamics. The results of the molecular dynamics simulation revealed that the addition of viscosity reducer into heavy oil varied the potential energy, non-potential energy, density and hydrogen bond distribution of heavy oil. Benefiting from its structure, the benzene ring in PB was well embedded in the interlayer structure of asphaltene, contributing to weaken the network structure of the heavy oil. Moreover, the two strong polar groups (COO<sup>−</sup> and SO<sub>3</sub><sup>−</sup>) of AA and AMPS, which constituted the branched chains of the viscosity reducer’s molecular structure, gradually disassembled the network structure from the ‘inward’ to the ‘outward’ of the heavy oil network structure, thereby driving heavy oil viscosity reduction (as clarified by molecular dynamics). Owing to its temperature resistance, this kind of new amphiphilic low molecular copolymer could be an effective viscosity reducer for heavy oil cold recovery at elevated temperatures.Chao MaXingyu LiuLonglong XieYan ChenWendong RenWen GuMinghua ZhangHuili ZhouMDPI AGarticlemolecular dynamics simulationamphiphilic polymershydrophobic monomerviscosity reduction of heavy oilviscosity reduction mechanismTechnologyTENEnergies, Vol 14, Iss 6856, p 6856 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	molecular dynamics simulation amphiphilic polymers hydrophobic monomer viscosity reduction of heavy oil viscosity reduction mechanism Technology T
spellingShingle	molecular dynamics simulation amphiphilic polymers hydrophobic monomer viscosity reduction of heavy oil viscosity reduction mechanism Technology T Chao Ma Xingyu Liu Longlong Xie Yan Chen Wendong Ren Wen Gu Minghua Zhang Huili Zhou Synthesis and Molecular Dynamics Simulation of Amphiphilic Low Molecular Weight Polymer Viscosity Reducer for Heavy Oil Cold Recovery
description	In order to reduce the viscosity of heavy oil, the performance of emulsifying viscosity reducers is limited. In this study, a new kind of amphiphilic low molecular weight viscosity reducer was prepared by emulsion copolymerization of acrylamide (AM), acrylic acid (AA), 2-acrylamido-2-methylpropanesulfonic acid (AMPS), and Butene benzene (PB). The synthesis feasibility and viscosity reduction mechanism of viscosity reducer in heavy oil were explored using Materials Studio software from the perspective of molecular dynamics. The results of the molecular dynamics simulation revealed that the addition of viscosity reducer into heavy oil varied the potential energy, non-potential energy, density and hydrogen bond distribution of heavy oil. Benefiting from its structure, the benzene ring in PB was well embedded in the interlayer structure of asphaltene, contributing to weaken the network structure of the heavy oil. Moreover, the two strong polar groups (COO<sup>−</sup> and SO<sub>3</sub><sup>−</sup>) of AA and AMPS, which constituted the branched chains of the viscosity reducer’s molecular structure, gradually disassembled the network structure from the ‘inward’ to the ‘outward’ of the heavy oil network structure, thereby driving heavy oil viscosity reduction (as clarified by molecular dynamics). Owing to its temperature resistance, this kind of new amphiphilic low molecular copolymer could be an effective viscosity reducer for heavy oil cold recovery at elevated temperatures.
format	article
author	Chao Ma Xingyu Liu Longlong Xie Yan Chen Wendong Ren Wen Gu Minghua Zhang Huili Zhou
author_facet	Chao Ma Xingyu Liu Longlong Xie Yan Chen Wendong Ren Wen Gu Minghua Zhang Huili Zhou
author_sort	Chao Ma
title	Synthesis and Molecular Dynamics Simulation of Amphiphilic Low Molecular Weight Polymer Viscosity Reducer for Heavy Oil Cold Recovery
title_short	Synthesis and Molecular Dynamics Simulation of Amphiphilic Low Molecular Weight Polymer Viscosity Reducer for Heavy Oil Cold Recovery
title_full	Synthesis and Molecular Dynamics Simulation of Amphiphilic Low Molecular Weight Polymer Viscosity Reducer for Heavy Oil Cold Recovery
title_fullStr	Synthesis and Molecular Dynamics Simulation of Amphiphilic Low Molecular Weight Polymer Viscosity Reducer for Heavy Oil Cold Recovery
title_full_unstemmed	Synthesis and Molecular Dynamics Simulation of Amphiphilic Low Molecular Weight Polymer Viscosity Reducer for Heavy Oil Cold Recovery
title_sort	synthesis and molecular dynamics simulation of amphiphilic low molecular weight polymer viscosity reducer for heavy oil cold recovery
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/fc2709db06ab463488c26cdb15fb962a
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Synthesis and Molecular Dynamics Simulation of Amphiphilic Low Molecular Weight Polymer Viscosity Reducer for Heavy Oil Cold Recovery

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