The Evaluation of an Immiscible-CO₂ Enhanced Oil Recovery Technique for Heavy Crude Oil Reservoirs

Abstract

Sequestration of CO₂ in enhanced oil recovery applications has been widely recognized as one of the favorite techniques for reducing emissions of CO₂ into the atmosphere in response to global climate change. This technique provides lower costs for CO₂ sequestration by means of higher incremental oil recoveries. There are some key parameters, when considering a field for the CO₂ displacement. Oil reservoirs are screened out according to oil gravity, reservoir temperature and pressure, minimum miscibility pressure, and remaining oil saturation. Throughout this study, the CO₂-Prophet tool is utilized in order to assess suitability of Bati Raman and Çamurlu crude oil fields for CO₂-enhanced oil recovery application. In the second part of the study, the Kinder Morgan Scoping economic model is used to see economic consequences of the project. Although the °API gravity and minimum miscibility pressure for these fields do not meet the required criteria for the miscible flood, due to importance of CO₂ sequestration and absence of appropriate fields for CO₂-enhanced oil recovery implementation in Turkey, these fields can be considered for CO₂-enhanced oil recovery applications as long as the project is economically feasible.

Keywords:

• CO₂ sequestration
• crude oil
• economic model
• enhanced oil recovery
• oil reservoir