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Optimisation of surfactant concentration to the foam generation and swelling ratio of CO2 foam flooding in light oil reservoir
Saputra D.D.a, Bae W.a, Permadi A.K.b, Muslima, Pham T.H.a, Efriza I.a, Gunadi T.A.a
a Sejong University, South Korea
b Bandung Institute of Technology, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]The implementation of CO2 flooding is steadily increased in the world since 1980s and is used in mature fields after water flooding. The main reason of using CO2 gas for tertiary recovery is because of its capability to reduce oil viscosity and to make crude oil swell, hence improve oil mobility. However, there are some challenges such as poor sweep efficiency, low oil recovery due to viscous fingering and gravity segregation, and inefficient gas utilization in the field. CO2 slug combined with surfactant slug will produce foam that will reduce gas mobility and block the high permeability zones in the reservoir. Therefore, it is necessary to have a comprehensive study about surfactant concentration effect and swelling ratio of CO2 foam flooding to further improve oil recovery. The objectives of this paper is to know the optimal surfactant concentration in the injection slug and to analyze the swelling effect during CO2 injection. Several parameters that was analyzed were volume changes after swelling, surfactant concentration, foam stability and pressure and temperature changes. The study started with conducting several experiments. First, the optimal surfactant concentration is evaluated by using spinning drop interfacial tension apparatus for knowing the interfacial tension of oil/surfactant. The foam stability experiment was conducted by using foam generation and foam stability apparatus. Then, the swelling factor was obtained by doing CO2 swelling test simulation. The result of this study was optimization of the foam flooding design in light oil reservoirs with considering surfactant concentration and swelling ratio effect. Using optimal surfactant concentration for foam generation and CO2 concentration from swelling ratio measurement, it will improve sweep efficiency of the injected fluids and decrease the interfacial tension of oil. The study presented in this paper can be used to design the optimal CO2 foam flooding parameter for light oil reservoirs. Copyright 2013, Society of Petroleum Engineers.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Gravity segregation,High permeability zone,Improve oil recovery,Light oil reservoirs,Pressure and temperature,Surfactant concentrations,Swelling ratio measurements,Viscous fingering[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]