Experimental Investigation of Adsorption Phenomenon in Surfactant Alternative Nitrogen Injection

Document Type : Research Note


1 Research Institute of Petroleum Industry (RIPI), Tehran, I.R. IRAN

2 Sahand Oil and Gas Research Institute, Sahand University of Technology, Tabriz, I.R. IRAN


Due to decline in oil production, inefficiency of  conventional EOR methods and a huge trapped volume of oil in reservoirs, it is reasonable to use helpful methods with higher initial cost. Adsorption phenomenon that has been affected by several factors, weakens the success of SAG injection which its efficiency is confirmed by fractional flow analysis. In this study,by conducting static and dynamic adsorption experiments, the effects of sacrificial agent, gas phase, and surfactant concentration on adsorption density were examined. Next, SAG experiments were performed in order to compare with the conventional methods such as water alternative gas injection and continuous gas injection. Also, the effect of sacrificial agent on oil recovery was studied. Spectrophotometric method based on the formation of an ion-pair between Safranin o and surfactant was used in all experiments for determination of surfactant concentration. The results of adsorption experiments show that SDS adsorption density was reduced when nitrogen was imposed instead of using methane. Also, the amount of surfactant loss was decreased in precense sacrificial agent. Static experiment shows that the amount of loss of surfactant on dolomite and shale were higher than Silica. Flooding experiment results show that SAG injection increase final recovery up to 10% and 28% in comparison with WAG and continuous gas injection, respectively. formation of stable foam in optimum injection rate leads to decrease in gas mobility. Using CLS slightly increases the ultimate oil recovery up to 2 %, while it decreases the loss of SDS 22 percent.


Main Subjects

[1] عباسی، سعید؛ جاهدی، مهدی؛ اثر فشار و مقدار گاز CO2 تزریقی روی میزان بازیافت نفت در فرایند تزریق گاز، نشریه شیمی و مهندسی شیمی ایران،(2)26: 73 تا 84 (1386).
[3] Reid B. Grigg, Spe, Baoj Un Bai, Yi L Iu, Competitive Adsorption of a Hybrid Surfactant System Onto Five Minerals, Berea Sandstone, And Limestone, Society of Petroleum Engineering, Spe 90612 (2004).
[4] Andy Eka Syahputra, Jyun-Syung Tsau, Reid B.Grigg, Laboratory Evaluation of Using Lignosulfonate and Surfactant Mixture in CO2 Flooding , Society of Petroleum Engineering, Spe 59368 (2000).
[5] Viet Q. Le, Quoc P. Nguyen, A Novel Foam Concept with Co2 Dissolved Surfactants,Society of Petroleum Engineering, SPE 113370 (2008).
[6] Subrata Borgohain Gogoi, Adsorption of Non-Petroleum Base Surfactant on Reservoir Rock. Current Science, 97(7): 1059-1063 (2009).
[7] Jyun-Syung Tsau, Andy Eka Syahputra, Economic Evaluation of Surfactant Adsorption in CO2 Foam Application, Society of Petroleum Engineering, Spe 59365 (2000).
[8] I Liu Reid B. Grigg and Baojun Bai, “Salinity, Ph, And Surfactant Concentration Effects on Co2-Foam,Society of Petroleum Engineering, SPE 93095 (2005).
[9]  Shi J-X., Rossen W.R., Improved Surfactant-Alternating-Gas Foam Process to Control Gravity Override, Society of Petroleum Engineering, SPE 39653 (1998).
[10]  Kloet M.B., Renkema W.J., Rossen W.R., Optimal Design Criteria for Sag Foam Processes in Heterogeneous Reservoirs, Society of Petroleum Engineering, SPE 121581, (2009).
[11] Alex T. Turta, Ashok K. Singhal, Field Foam Applications in Enhanced Oil Recovery Projects: Screening and Design Aspects, Society of Petroleum Engineering, SPE 48895 (1998).
[12] Xu Q., Rossen W.R., "Experimental Study of Gas Injection in a Surfactant-Alternating-Gas Foam Process", Society of Petroleum Engineers (2004).
[13] Blaker, H.K. Celius, T. Lie, Foam for Gas Mobility Control in the Snorre Field: The Fawag Project, Society of Petroleum Engineering, SPE 56478 (1999).
[14] Fu Yin Song, Islam M.R., A New Mathematical Model and Experimental Validation of Multicomponent Adsorption, Society of Petroleum Engineering, SPE / Doe 27838 (1994).
[15] George J. Hirasaki, Clarence A. Miller, "Surfactant Based Enhanced Oil Recovery and Foam Mobility Control", 3rd Semi-Annual Technical Report (2005).
[16] Moradi-Araghi A., Johnston E.L., Laboratory Evaluation of Surfactants for CO2-Foam Applications at the South Cowden Unit, Society of Petroleum Engineering, SPE 37218 (1997).
[17]  Somasundaran P., Zhang L., Adsorption of Surfactants on Minerals for Wettability Control in Improved Oil Recovery Processes, Journal of Petroleum Science and Engineering, 52: 198-212 (2006) .
[18]  Daneshfar A., Arvin Pili F., Kaviyan H., Spectrophotometric Determination Of Sodium Dodecyl Sulfate in Wastewater Based on Ion-Pair Extraction with Safranine-O, Semnan Journal of Applied Chemistry, 10: 63-74(2009).