Etude de l'efficacité de l'EOR dans le champ de Zarzaitine Nord-Est

Abstract

When the oil recovery comes to its lower level at which the production of oil is insufficient economically. The need for tertiary methods will be necessary. These techniques are referred to the ones that used after the implementation of the secondary recovery methods. Tertiary or well known as Enhanced oil recovery (EOR) is the recovery of oil from a reservoir by the injecting of materials that not normally present in reservoir. Usually these processes use miscible gases, chemicals, and/or thermal energy to recover additional oil. Enhanced oil recovery (EOR) screening is considered as the first step in evaluating the Potential EOR techniques for candidate reservoirs. Therefore, as new technologies are developed, it is important to update the screening criteria. In this study, we collected petrophysical, reservoir and production data for the Zarzaitin oilfield to build a reservoir model by CMG software, and choose the best technique for improved oil recovery from the D0 reservoir. The study concluded that the best method was chosen from EOR methods, we found that miscible gas injection is the best method compared to the polymer injection method and the water flooding are also feasible compared to other methods.