In this work, the focus is given to the study of sequestration potential and recovery improvement in depleted NFRs using CWI. Initially a number of CWI experiments on reservoir cores with different wettabilities were modeled to verify physical aspect of the suggested simulation approach. Afterward, a modeling procedure was suggested to make an insight into the engineering parts of this process. In summary, it defined a 3 × 3×3[m³] reservoir rock matrix (a single matrix block, SMB) surrounded by carbonated water in fractures. The numerical aspects of the model were verified by a mesh independent study, in addition. The effects of several key parameters such as anisotropy, permeability, CO₂ fraction in water, wettability alteration and block height were studied and compared for matrix blocks with different wettabilities. These effects were studied by incremental oil recovery and the amount of trapped CO₂ in the matrix block. As indicated in this study, by implementing CWI, 10.6% incremental oil recovery can be achieved for a water-wet sample and 4.7% for an oil-wet sample during a period of 10 years. Moreover, about 3000[mol] CO₂ were trapped in oil and water of the matrix after 10 years and this was increased to more than 8000[mol] after 100 years for the water-wet matrix block with a volume of 27[m³]. During the same period, by increasing the CO₂ concentration from 1% to 2% in CW, oil recovery factor increased by 8.4% in water-wet sample. Subsequently, the amount of trapped CO₂ grew from 850 to 3000[mol] in 10 years.

在这项工作中，重点是使用CWI研究贫化NFR的螯合潜力和回收率提高。最初，对具有不同润湿性的储层岩心进行了许多CWI实验，以验证所建议模拟方法的物理方面。之后，提出了建模程序以深入了解此过程的工程部分。总之，它定义了一个由裂缝中的碳酸水包围的3×3×3 [m ³ ]储层岩石矩阵（单个矩阵块，SMB）。此外，该模型的数值方面还通过独立于网格的研究进行了验证。各向异性，磁导率，CO ₂等几个关键参数的影响研究了水中的水份，润湿性变化和块高，并比较了具有不同润湿性的基质块。通过增加采油量和基质块中捕集的CO ₂量研究了这些影响。如本研究所示，通过实施CWI，在10年期间，水湿样品的油采收率可提高10.6％，油湿样品的油采收率可提高4.7％。此外，在10年后，大约3000 [mol] CO ₂被捕集在基质的油和水中，而对于体积为27 [m ³的水湿基质块，在100年后，其增加到超过8000 [mol]。]。在同一时期，通过增加CO ₂浓度从1％增至2％（连续水），水润湿样品的采油率提高了8.4％。随后，在10年中，捕集的CO _2的量从850增加到3000 [mol]。