C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/584 (2006.01) E21B 43/22 (2006.01) C10G 1/04 (2006.01)
Patent
CA 2670358
This invention describes a composition of microemulsion comprising a mixture of a combination of surfactants and co-surfactants, an oil phase and an aqueous phase; and a method for advanced recovery of heavy oil comprising stages of: injection of a bank containing the said microemulsion composition, injection of a bank of a polymer solution, and injection of water. This microemulsion composition can be applied in arenitic and carbonatic reservoirs, containing oils with API below 22.3° API, in both onshore and offshore fields.
Maldonado Gaspar Gonzalez
Oliveira Marcia Cristina Khalil
Gowling Lafleur Henderson Llp
Petroleo Brasileiro S.a. - Petrobas
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