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Investigation on Foam Self‐Generation Using In Situ Carbon Dioxide (CO 2 ) for Enhancing Oil Recovery
Author(s) -
Jin Fayang,
Wei Peng,
Pu Wanfen,
Zhang Lan,
Qian Zhen,
Wu Guangsheng
Publication year - 2018
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1002/jsde.12037
Subject(s) - enhanced oil recovery , foaming agent , chemistry , in situ , carbon dioxide , porous medium , chemical engineering , porosity , sulfonate , sodium , organic chemistry , engineering
In situ carbon dioxide (CO 2 ) foam flooding has proved to be economically feasible in the oil field, but its self‐generation behavior in the bulk scale/porous media is far from understood. In this study, the optimum in situ CO 2 ‐foaming agent was first screened, and then in situ foam was investigated in the bulk. In situ foam flooding was conducted to evaluate the displacement characteristics and enhanced oil recovery of this system. The results showed that the foaming agent comprising 0.5% sodium dodecyl sulfonate (SDS) + 0.5% lauramido propyl hydroxyl sultaine (LHSB) gave the best foam properties and that the in situ CO 2 foam with a slow releasing rate is effective both in bulk scale and in porous media, allowing a considerable enhancement of oil recovery in sand packs with different permeabilities.