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; the geological, reservoir and production data were collected for the screening process, the filtering process was done for wells that produce from AbuGabra and Bentiu formation. To reach the optimal accuracy in selecting process the data collected was analyzed and filtered well by well. Finally, the well pattern was ranked; the infill drilling wells was proposed in term of wells workover and wells modification. Greater Hadida oil field is selected for the application of detailed (EOR) screening. From the screening processes were done, The most feasible methods are the immiscible gas injection and polymer flooding. The results show that a combination of conventional and detailed EOR screening represents a valuable approach to support reservoir development plans (RDPs).
