TY - JOUR
T1 - Efficient use of oil in water macroemulsions as enhanced oil recovery agents
AU - Hernandez-Perez, Joaquin
AU - Likhanova, Natalya
AU - Lopez-Falcon, Dennys
AU - Olivares-Xometl, Octavio
AU - Munoz-Salazar, Laura
AU - Trejo-Zarraga, Fernando
N1 - Publisher Copyright:
© 2021 Taylor & Francis Group, LLC.
PY - 2022
Y1 - 2022
N2 - To obtain some insights into the transport of macroemulsions prepared outside of the reservoir for oil recovery through porous media, laboratory experiments were run by injecting different formulations of diluted oil in water emulsions through sandstone cores. Emulsions, whose disperse phase was 70%, were stable for one year. Mathematical model parameters were fitted with data from emulsion transport experiments. According to this model, it is enough to inject 0.1 pore volume of emulsion slug for its adequate transportation through porous media. Oil displacement tests were carried out as part of a secondary recovery process, followed by the injection of an emulsion slug, and then again by water flooding to obtain additional oil recovery up to 23.5%. At the same concentration, emulsions based on a hydrophobic compound were more effective than emulsions prepared from crude oil, obtaining a difference of cumulative residual oil recovery of around 12%. The injection of an emulsion slug at 1wt.% of concentration and 0.1 pore volume after waterflooding is both a promising alternative and technically viable additional recovery method. Emulsions were stable for a long time and easyly diluted with water, which can be very useful in mature oilfields.
AB - To obtain some insights into the transport of macroemulsions prepared outside of the reservoir for oil recovery through porous media, laboratory experiments were run by injecting different formulations of diluted oil in water emulsions through sandstone cores. Emulsions, whose disperse phase was 70%, were stable for one year. Mathematical model parameters were fitted with data from emulsion transport experiments. According to this model, it is enough to inject 0.1 pore volume of emulsion slug for its adequate transportation through porous media. Oil displacement tests were carried out as part of a secondary recovery process, followed by the injection of an emulsion slug, and then again by water flooding to obtain additional oil recovery up to 23.5%. At the same concentration, emulsions based on a hydrophobic compound were more effective than emulsions prepared from crude oil, obtaining a difference of cumulative residual oil recovery of around 12%. The injection of an emulsion slug at 1wt.% of concentration and 0.1 pore volume after waterflooding is both a promising alternative and technically viable additional recovery method. Emulsions were stable for a long time and easyly diluted with water, which can be very useful in mature oilfields.
KW - chemical hydrophobic compounds
KW - emulsion flooding
KW - enhanced oil recovery
KW - mathematical modeling
KW - numerical fitting
KW - transport in porous media
UR - http://www.scopus.com/inward/record.url?scp=85117359363&partnerID=8YFLogxK
U2 - 10.1080/10916466.2021.1992422
DO - 10.1080/10916466.2021.1992422
M3 - Artículo
AN - SCOPUS:85117359363
SN - 1091-6466
VL - 40
SP - 201
EP - 216
JO - Petroleum Science and Technology
JF - Petroleum Science and Technology
IS - 2
ER -