Evaluation of CO2 Storage Capacity Potentiality as a Secondary Driving Mechanism in Enhanced Oil Recovery in East Bahariya Field, Bahariya Concession, Western Desert, Egypt

Abstract Egypt formulated its sustainable development strategy "Egypt Vision 2030" in 2015. This strategy aims to protect the environment in the development process by integrating environmental aspects into economic and social development plans to manage natural resources, conserve natural capital, and develop to protect the environmental rights of future generations. According to the IEA (International Energy Agency) CO2 emission reduction projects to track advances in carbon capture, utilization, storage as well as use of naturally occurring CO2 for EOR (Enhanced Oil Recovery) of depleted reservoirs. This paper proposes a methodology for evaluating underground CO2 storage capacity according to the facies of different formations applicable to the CO2 EOR projects. The methods proposed in this document will not only help third parties create reports and inventories of greenhouse gas emissions from companies, but also help governments to encourage companies to reduce their CO2 emissions. It would be beneficial for the industry implementing CCUS (Carbo Capture Utilize and Storage) projects to provide key evaluation parameters and implement the necessary monitoring techniques. Due to advantages and vast resource capacity, onshore CO2 storage provides an attractive option. Bahariya concession is located at the eastern trough of Abu Gharadig basin, Western Desert, Egypt. By Using the available data, a subsurface geologic evaluation and 3D modelling was carried out in terms of thickness variation, lithofacies, structural setting and depositional environment of the studied rock unit in the encountered basin. This study presents both depleted reservoir and shallow non-reservoir formations as preliminary targets for CO2 storage potential. It was concluded that both clastic and non-clastic Cretaceous formations have a high-quality potential geological reservoir repository for CO2 storage capacity.