Investigating the effect of external magnetic field on preventing deposition process in wax/asphaltene nanostructure using molecular dynamics simulation

IF 6.4 2区工程技术 Q1 MECHANICS

International Communications in Heat and Mass Transfer Pub Date : 2024-11-15 DOI:10.1016/j.icheatmasstransfer.2024.108340

Jianguo Shao , Nawfel M.H. Al-Aragi , Dheyaa J. Jasim , Munthar Kadhim Abosaoda , Shirin Shomurotova , Soheil Salahshour , As'ad Alizadeh , M. Hekmatifar

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引用次数: 0

Abstract

Background:

A critical challenge in extraction and exploitation in the oil industry is the buildup of crude oil in surface tanks and transmission lines. This leads to the development of heavy organic compounds like wax and asphaltene, which can further result in sediment formation. This issue is particularly prevalent in oil facilities and transmission systems.

Methods

To address this concern, a recent study focused investigating the effect of varying the frequency and amplitude of an external magnetic force on preventing precipitation in a Fe₃O₄@SiO₂/wax/asphaltene nanostructure. This investigation was carried out using molecular dynamics simulation techniques. The results of this study indicate that after completing the molecular dynamics simulation, the kinetic energy of the analyzed structure reached the convergence point of 0.89 kcal/mol. Also, during the structural equilibrium phase, the total energy of the studied structure was stabilized at 32.34 kcal/mol, which indicated the stability obtained in the simulated system. This study showed that by increasing the frequency of external magnetic force from 0.01 to 0.05 fs⁻¹, the viscosity value of the structure increased from 1092 to 1106 mPa.s. This occurred as the frequency of external magnetic force increased, reducing the agglomeration time in the structure from 8.61 to 8.43 ns. On the other hand, increasing the amplitude of external magnetic force from 0.1 to 0.5 T caused a significant decrease in the viscosity of the structure. It reduced it from 1092 to 1028 mPa·s.

Significant findings

Finally, this increase in the amplitude of external magnetic force produced a corresponding trend in the structure's agglomeration time, which increased from 8.61 to 9.03 ns. By optimizing oil flow in pipelines, the results of this study could have significant applications in the oil industry. The precise control of external magnetic forces can minimize the buildup of wax and asphaltene, which leads to a smoother and more efficient oil transportation process. Furthermore, by reducing the frequency of blockages and sediment formation, the need for maintenance and cleaning operations would decrease, ultimately lowering operational costs and enhancing the overall efficiency of extraction and transportation systems.

查看原文本刊更多论文

利用分子动力学模拟研究外磁场对防止蜡/asphaltene 纳米结构沉积过程的影响

背景：石油行业在开采和利用过程中面临的一个严峻挑战是原油在地面储罐和输油管道中的积聚。这会导致蜡和沥青烯等重有机化合物的形成，并进一步导致沉积物的形成。为了解决这一问题，最近的一项研究重点调查了改变外部磁力的频率和振幅对防止 Fe3O4@SiO2/ 蜡/沥青烯纳米结构中沉淀的影响。这项研究采用分子动力学模拟技术进行。研究结果表明，在完成分子动力学模拟后，分析结构的动能达到了 0.89 kcal/mol 的收敛点。此外，在结构平衡阶段，所研究结构的总能量稳定在 32.34 kcal/mol，这表明模拟系统获得了稳定性。研究表明，随着外磁力频率从 0.01 fs-1 增加到 0.05 fs-1，结构的粘度值从 1092 mPa.s 增加到 1106 mPa.s。另一方面，外磁力振幅从 0.1 T 增加到 0.5 T 会显著降低结构的粘度。重要发现最后，外磁力振幅的增加使结构的聚结时间呈现出相应的趋势，从 8.61 ns 增加到 9.03 ns。通过优化输油管道中的油流，本研究成果在石油工业中具有重要应用价值。对外部磁力的精确控制可以最大限度地减少蜡和沥青质的堆积，从而使石油运输过程更顺畅、更高效。此外，通过减少堵塞和沉积物形成的频率，维护和清洁操作的需求也会减少，最终降低运营成本，提高开采和运输系统的整体效率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Communications in Heat and Mass Transfer 工程技术-力学

CiteScore

11.00

自引率

10.00%

发文量

648

审稿时长

32 days

期刊介绍： International Communications in Heat and Mass Transfer serves as a world forum for the rapid dissemination of new ideas, new measurement techniques, preliminary findings of ongoing investigations, discussions, and criticisms in the field of heat and mass transfer. Two types of manuscript will be considered for publication: communications (short reports of new work or discussions of work which has already been published) and summaries (abstracts of reports, theses or manuscripts which are too long for publication in full). Together with its companion publication, International Journal of Heat and Mass Transfer, with which it shares the same Board of Editors, this journal is read by research workers and engineers throughout the world.