ANALISA LIQUID PERMEABILITY UNTUK MENGINJEKSIKAN AIR PADA FORMASI SUMUR X

Abstract

Water injection is one of the Enhanced Oil Recovery (EOR) methods aimed at maintaining reservoir pressure and improving sweep efficiency. One of the key parameters for the success of water injection is throughput, which represents the volume of fluid that can flow through a porous medium over a certain period of time. This study aims to analyze throughput during the water injection process into reservoir rocks by considering factors such as permeability, injection pressure, and fluid viscosity.Experiments were conducted on core samples with varying permeability and injection pressure. Data were obtained using the core flooding method to evaluate the relationship between absolute permeability, relative permeability, and water injection rate. The results indicate that throughput increases significantly with higher injection pressure and rock permeability. However, under certain conditions, the presence of residual oil in the rock pores reduces water flow effectiveness due to capillary trapping and saturation hysteresis effects.