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首页> 外文期刊>International Journal of Heat and Mass Transfer >Molecular insight into the miscible mechanism of CO_2/C_(10) in bulk phase and nanoslits
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Molecular insight into the miscible mechanism of CO_2/C_(10) in bulk phase and nanoslits

机译：分子相和纳米缝隙中CO_2 / C_（10）混溶机理的分子洞察

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摘要

The determination of minimum miscibility pressure (MMP) of CO2/oil in tight oil reservoirs has aroused huge attention from researchers. In this study, we characterized the mass transfer process and determined the MMP of CO2/oil systems in nanoslits through molecular simulation. A bulk phase and five confined nanoslits with the pore size ranging from 2 to 15 nm were examined. It was found that the MMPs in nanoslits were significantly lower than those in bulk phase, thus revealing that rising the probability of molecular interaction is a vital factor affecting the miscible phase. Furthermore, due to the consideration of adsorption layer, the width of nanoslit with the lowest MMP was larger than the reported value, which will bring more uncertainty to the molecular migration. This simulation study highlighted the crucial role of the confinement effect in the miscible process of CO2 flooding, which might facilitate the development of low permeability reservoirs. (C) 2019 Elsevier Ltd. All rights reserved.
机译：确定致密油储层中CO2 /油的最小混溶压力（MMP）引起了研究人员的极大关注。在这项研究中，我们表征了传质过程，并通过分子模拟确定了纳米缝中CO2 /油体系的MMP。检查了一个整体相和五个孔径范围为2至15 nm的受限纳米缝隙。发现纳米缝中的MMP显着低于本体相中的MMP，因此表明分子相互作用的可能性增加是影响混溶相的重要因素。此外，由于考虑了吸附层，MMP最低的纳米缝的宽度大于报道的值，这将给分子迁移带来更多不确定性。这项模拟研究强调了限制作用在CO2驱油混溶过程中的关键作用，这可能会促进低渗透油藏的开发。 （C）2019 Elsevier Ltd.保留所有权利。

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  • 来源
  • 作者

    Fang Timing; Zhang Yingnan; Liu Jie; Ding Bin; Yan Youguo; Zhang Jun;

  • 作者单位

    China Univ Petr, Sch Mat Sci & Engn, Qingdao 266580, Shandong, Peoples R China|Natl Univ Singapore, Dept Chem & Biomol Engn, Singapore 117576, Singapore;

    China Univ Petr, Sch Mat Sci & Engn, Qingdao 266580, Shandong, Peoples R China;

    Natl Univ Singapore, Dept Chem & Biomol Engn, Singapore 117576, Singapore;

    PetroChina, Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China;

    China Univ Petr, Sch Mat Sci & Engn, Qingdao 266580, Shandong, Peoples R China;

    China Univ Petr, Sch Mat Sci & Engn, Qingdao 266580, Shandong, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Molecular dynamics simulation; Carbon dioxide; Miscibility; Nanoslit;

    机译：分子动力学模拟;二氧化碳;混溶;纳米米;

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