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首页> 外文会议>SPE Kingdom of Saudi Arabia Annual Technical Symposium and Exhibition >Modeling Coupled Effects of Dissolved Salts (Na~+, K~+, Mg~(2+), Ca~(2+), CI~-, SO4~(2-)) Concentration on Multiphase Flow and Dissolution of CO2 in Saline Aquifer
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Modeling Coupled Effects of Dissolved Salts (Na~+, K~+, Mg~(2+), Ca~(2+), CI~-, SO4~(2-)) Concentration on Multiphase Flow and Dissolution of CO2 in Saline Aquifer

机译：溶解盐的涂层耦合效应（Na〜+，K〜+，Mg〜（2+），Ca〜（2+），Ci〜 - ，SO4〜（2-））浓度对盐水中的多相流和CO2溶解的浓度 含水层

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Dissolution trapping plays imperative role in immobilization of injected CO2 in saline aquifer. However, dissolved salts concentration in saline brine plays critical role in influencing solubility of CO2. The present work numerically investigates the effect of dissolved salts concentration in brine on dissolution of CO2. The present work also investigate the coupled effect of injection induced flow and distribution of CO2 in brine and brine salinity on solubility of CO2. Towards objective, a numerical model governing two phase immiscible fluid flow with associated capillary interphase has been developed. The solubility of CO2 into brine at the interphase is computed by the developed solubility model. Validated numerical model has been used to investigate the coupled effect of flow and dissolution. The observed results suggest that as pressure of the system increases solubility increases, whereas salinity of brine has inverse effect on solubility. It has been observed that, injection of CO2 in porous system results in drastic pressure buildup at the near well bore region and GO2 phase propagates along the length of the porous media. The coupled effect of flow and distribution has significant effect on dissolution and it has been observed that about 15.95% of dissolved mass fraction has been dissolved after 96 hours in injection.
机译：溶解诱捕在盐水含水层中的注射二氧化碳的固定中起着势不一性作用。然而，盐水盐水中的溶解盐浓度在影响CO 2的溶解度方面发挥着关键作用。本作者数值研究了盐水中溶解盐浓度对CO 2溶解的影响。本作者还研究了注射诱导的流量和CO2在CO 2溶解度上的CO 2的耦合效应和CO2的分布。对客观来说，已经开发了一种用相关毛细管间间流动的两个相间不混溶的流体流动的数值模型。 CO2在间位的盐水中的溶解度由开发的溶解度模型计算。已验证的数值模型用于研究流动和溶解的耦合效果。所观察结果表明，随着系统的压力增加溶解度增加，而盐水的盐度对溶解度具有反比作用。已经观察到，在多孔系统中注射CO 2导致近孔孔区域的剧烈压力累积，并且GO2相沿多孔介质的长度传播。流动和分布的耦合效果对溶解具有显着影响，并且已经观察到，在注射96小时后，已经溶解了约15.95％的溶解质量级分。

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