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The role of interfacial tension in near-miscible carbon dioxide injection.

机译：界面张力在近乎混溶的二氧化碳注入中的作用。

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Oil recovery in near Minimum Miscibility Pressure gas injection was the subject in this thesis. Gas injection at pressure near MMP is called near-miscible injection. The focus of the study was to investigate the role of interfacial tension (IFT) on recovering oil at near-miscible CO2 injection. In addition, the relative importance of IFT and mass transfer in recovering oil at near-miscible injection was studied. For the purposes of this study, a series of simulations involving CO2 injection into a slimtube were conducted. Laboratory experiments of CO2 were also conducted to verify the simulations results. In the simulations, the Coats model of IFT-related relative permeability was used to implement the effect of IFT. The simulations were divided to two sets:; The first, Set A, investigates the effect of IFT in absence of mass transfer. This set used the equilibrated composition of CO2-C4-C 10 in simulations of displacement. The second, Set B, studied the effect of IFT in the presence of initial water saturation. Simulations of CO 2 injection into a slimtube had initial water saturation. (Abstract shortened by UMI.)
机译：本文的研究主题是在接近最小混溶压力注气的情况下采油。在接近MMP的压力下注入气体称为近混注入。该研究的重点是研究在几乎混溶的二氧化碳注入中，界面张力（IFT）在采油中的作用。此外，研究了IFT和传质在近混溶注入中采油的相对重要性。为了本研究的目的，进行了一系列将二氧化碳注入细管的模拟。还进行了二氧化碳的实验室实验，以验证模拟结果。在仿真中，使用IFT相关相对渗透率的Coats模型来实现IFT的效果。模拟分为两组：第一组，A，研究了在没有传质的情况下IFT的作用。该组在位移模拟中使用了平衡的CO2-C4-C 10组成。第二组，B组，研究了初始水饱和条件下IFT的影响。细管中注入CO 2的模拟具有初始水饱和度。 （摘要由UMI缩短。）

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