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CO2复合驱油分子动力学模拟及微观机理研究

蒋永平

蒋永平. CO2复合驱油分子动力学模拟及微观机理研究[J]. 石油实验地质, 2019, 41(2): 274-279. doi: 10.11781/sysydz201902274
引用本文: 蒋永平. CO2复合驱油分子动力学模拟及微观机理研究[J]. 石油实验地质, 2019, 41(2): 274-279. doi: 10.11781/sysydz201902274
JIANG Yongping. Molecular dynamics simulation and microscopic mechanism of CO2 composite flooding[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2019, 41(2): 274-279. doi: 10.11781/sysydz201902274
Citation: JIANG Yongping. Molecular dynamics simulation and microscopic mechanism of CO2 composite flooding[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2019, 41(2): 274-279. doi: 10.11781/sysydz201902274

CO2复合驱油分子动力学模拟及微观机理研究

doi: 10.11781/sysydz201902274
基金项目: 

中国石化科技开发部项目"洲城中高渗高含水油藏CO2复合驱油技术研究"(P17056-6)资助。

详细信息
    作者简介:

    蒋永平(1979-),男,硕士,高级工程师,从事油田开发研究和油田生产管理。E-mail:jiangyp.hdsj@sinopec.com。

  • 中图分类号: TE357.45

Molecular dynamics simulation and microscopic mechanism of CO2 composite flooding

  • 摘要: 为了探索较大幅度提高高含水期复杂断块油田剩余油采收率,提出了CO2复合驱方式进行剩余油开采对策并在矿场先导试验井组取得了显著的增油降水效果,但对CO2复合驱油体系微观增油机理的相关研究较少,亟需开展这方面的基础研究。基于CT扫描结果,结合油藏开发实际,明确了滴状和膜状剩余油为难以动用的2种剩余油类型;构建了溶解油滴模型和剥离油膜模型,利用分子动力学方法进行模拟。溶解油滴模拟结果表明,CO2扩散至油滴中,增加其体积,然后油滴分子逐渐溶解在驱油体系中;剥离油膜分子动力学模拟结果表明,CO2在油相中先形成扩散通道,随后CO2优先通过扩散通道至岩石表面,CO2在表面上形成氢键而产生吸附。

     

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出版历程
  • 收稿日期:  2018-10-24
  • 修回日期:  2019-02-25
  • 刊出日期:  2019-03-28

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