TY - JOUR
T1 - Investigation on surfactant desorption isotherm to enhance oil spontaneous recovery in a low permeability core
AU - Ngo, Ichhuy
AU - Nguele, Ronald
AU - Sugai, Yuichi
AU - Sasaki, Kyuro
N1 - Publisher Copyright:
© 2021 Inderscience Enterprises Ltd.
PY - 2021
Y1 - 2021
N2 - Surfactant enhanced oil recovery depends on the interfacial tension (IFT) reduction and wettability alteration in the rock/oil/brine system. An adequate amount of surfactant within the system is vital during the application. The aforementioned problem becomes more sensitive in a low permeability formation when the adsorption is much higher than the desorption. This study, therefore, investigated the surfactant desorption isotherm using sodium dodecylbenzene sulfonate (SDBS) as a surfactant and tight Berea sandstone as adsorbent. The desorption of SDBS was found to follow a Langmuir type isotherm. Owing to the Langmuir characteristics, the desorption increased up to four folds by reducing the salinity of the process water from 3 wt.% to 1 wt.%. The study was extended in a spontaneous imbibition tests for oil recovery. The desorbed SDBS enables an increase in total oil recovery by 2%. The results were subsequent to a more favourable IFT and a mitigation in the narrow-pore blockage.
AB - Surfactant enhanced oil recovery depends on the interfacial tension (IFT) reduction and wettability alteration in the rock/oil/brine system. An adequate amount of surfactant within the system is vital during the application. The aforementioned problem becomes more sensitive in a low permeability formation when the adsorption is much higher than the desorption. This study, therefore, investigated the surfactant desorption isotherm using sodium dodecylbenzene sulfonate (SDBS) as a surfactant and tight Berea sandstone as adsorbent. The desorption of SDBS was found to follow a Langmuir type isotherm. Owing to the Langmuir characteristics, the desorption increased up to four folds by reducing the salinity of the process water from 3 wt.% to 1 wt.%. The study was extended in a spontaneous imbibition tests for oil recovery. The desorbed SDBS enables an increase in total oil recovery by 2%. The results were subsequent to a more favourable IFT and a mitigation in the narrow-pore blockage.
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U2 - 10.1504/IJOGCT.2021.118808
DO - 10.1504/IJOGCT.2021.118808
M3 - Article
AN - SCOPUS:85118259380
VL - 28
SP - 421
EP - 441
JO - International Journal of Oil, Gas and Coal Technology
JF - International Journal of Oil, Gas and Coal Technology
SN - 1753-3309
IS - 4
ER -