Author : Imtiaz Ahmed, Dr. Abdul Haque Tunio and Engr. Habibullah Engr. Temoor Muther, Engr. Zafarullah

Hydrocarbon is the prominent in fulfilling the global energy requirement. It comprises almost sixty per cent of the world’s energy consumption which demands further extraction of remaining oil.  This residual oil can be extracted viably through the application of chemical methods. Additional oil recovery factor from the field performance is low while alkaline injection alone. Mobility control is very important; therefore, the alkaline flooding coupled with polymer flooding is good for controlling mobility. To provide a critical review of Alkaline-Polymer flooding, this paper presents a comprehensive study. This paper covers the following content: Interaction of Alkali-Polymer, technical screening criteria, simulation work and summary of field projects. Analysis was carried out to compare the different scenarios of polymer, alkaline, and alkaline & polymer of injected slugs and their performance in terms of corresponding oil recoveries. This study is aimed at observing comparative simulation study by using alkaline and polymer separately and in combination results maximum productivity of oil. The scope of this proposed work is that it brings about an optimized condition where various concentrations of alkaline and polymer can yield required properties and interfacial tension for its application as EOR in the sandstone reservoir. It was observed from the results that the combination of chemicals has increased the additional recovery more than 20%. It provides incremental oil production after primary and secondary recovery, as it is needed to fulfill the world’s rising energy demand. In the contrast with the carried analysis the optimum combination of alkali-polymer system has been recommended in lower Goru formation for additional oil recovery.

Keywords:  Chemical EOR, Alkaline Flooding, EOR Simulation, Polymer Flooding AP Flooding

Article published in International Journal of Current Engineering and Technology, Vol.11, No.1 (Jan/Feb 2021)