Published on 26 October 2019
Currently, the most impactful method of reservoir development for efficient oil recovery is water flooding. The main objectives of this method are to maintain reservoir pressure and increase the final oil recovery rate. However, formation damage caused by suspended particles in injected water always occurs during water flooding, thus leading to injectivity decline. This also gives rise to higher injection pressures, above the maximum injection pressure than the surface facilities can provide. Relatively little consideration is given to formation damage in the process of well control optimization. In this study the effect of formation damage caused by clay particles dislodged by low salinity injection water on the well production performance is predicted by coupling an analytical model with a reservoir numerical simulator. This method is applied in a Niger Delta type field model to evaluate its effectiveness. The strength of the model lies in its ability to predict accurately effluent concentration profiles, permeability changes during reservoir water flooding, and the evolution of the filter coefficient with time using bed filtration model. In this study, model predictions for different particle and pore size distributions of particles are in agreement with experimental data.
Tags: горная порода, эффективность обводнения, оптимизация управления скважиной, повреждение пласта, проницаемость, закачка воды, взвешенные частицы.
ISSN 1998-4502 (Print) ISSN 2499-975Х (Online)