Switchable Diamine Surfactants for CO2 Mobility Control in Enhanced Oil Recovery and Sequestration

Elhag, Amro S.; Chen, Yunshen; Reddy, Prathima P.; Noguera, Jose A.; Ou, Anne Marie; Hirasaki, George J.; Nguyen, Quoc P.; Biswal, Sibani L.; Johnston, Keith P.

doi:http://dx.doi.org/10.1016/j.egypro.2014.11.804

Name:: SwitchableDiamineSurfactants.pdf
Size:: 774.1Kb
Format:: PDF

View/Open

Author

Elhag, Amro S.

Chen, Yunshen

Reddy, Prathima P.

Noguera, Jose A.

Ou, Anne Marie

Hirasaki, George J.

Nguyen, Quoc P.

Biswal, Sibani L.

Johnston, Keith P.

Date

2014

Citation

Elhag, Amro S., Chen, Yunshen, Reddy, Prathima P., et al.. "Switchable Diamine Surfactants for CO2 Mobility Control in Enhanced Oil Recovery and Sequestration." Energy Procedia, 63, (2014) 7709-7716. http://dx.doi.org/10.1016/j.egypro.2014.11.804.

Published Version

http://dx.doi.org/10.1016/j.egypro.2014.11.804

Abstract

The design of switchable amine surfactants for CO2 EOR in carbonate reservoirs at high temperatures is challenging because of the increase in the pH due to dissolution of calcium carbonate at acidic conditions. The increased pH hinders the protonation of the surfactant and its aqueous solubility. In this work, the addition of a second amine headgroup ensured that C16-18 N(EO) C3N(EO)2 is soluble in 22%TDS brine at neutral pH conditions. Also, captive bubble tensiometry measurements confirmed the activity of the surfactant at the C-W interface by large reduction in the interfacial tension coupled with high adsorption. Also, the surfactant generated viscous foam that can stabilize the displacement front in CO2 EOR processes and decrease the mobility of CO2 for enhanced CO2 sequestration.

Keyword

enhanced oil recovery; foams; switchable amines

Type

Journal article

Except where otherwise noted, this item's license is described as This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/).