Laboratory Testing of Novel Polyfraction Nanoemulsion for EOR Processes in Carbonate Formations

Piotr Kasza, Marek Czupski, Klaudia Wilk, Mateusz Masłowski, Rafał Moska and Łukasz Leśniak
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Piotr Kasza: Oil and Gas Institute—National Research Institute, 25A Lubicz str., 31-503 Krakow, Poland
Marek Czupski: Oil and Gas Institute—National Research Institute, 25A Lubicz str., 31-503 Krakow, Poland
Klaudia Wilk: Oil and Gas Institute—National Research Institute, 25A Lubicz str., 31-503 Krakow, Poland
Mateusz Masłowski: Oil and Gas Institute—National Research Institute, 25A Lubicz str., 31-503 Krakow, Poland
Rafał Moska: Oil and Gas Institute—National Research Institute, 25A Lubicz str., 31-503 Krakow, Poland
Łukasz Leśniak: Brenntag Polska, Jana Bema 21 str., 47-224 Kędzierzyn Koźle, Poland

Energies, 2020, vol. 13, issue 16, 1-16

Abstract: Nanoemulsions and polymers are widely used for increasing the efficiency of enhanced oil recovery (EOR) processes. The application of both these additives enables the synergistic use of several physical phenomena that are crucial to the process. One of the methods used for assessing these processes is laboratory core flooding tests using natural cores. In various experiments, carbonate rocks are subjected to oil displacement under high pressure and temperature. Polymer solutions and a newly developed polyfraction nanoemulsion are tested. The test results confirm the usefulness of these products for EOR processes and demonstrate their stability under high pressure, high temperature, and in the presence of H 2 S. Under these conditions the polymers maintain high efficiency in displacing crude oil from carbonate rocks, while the tested nanoemulsion improves the wettability of carbonate rocks and reduces interfacial tension, factors which increase the efficiency of oil displacement.The best result in the laboratory EOR simulation was obtained for polymer and nanoemulsion concentrations in dilute reservoir water of 0.05% and 1%, respectively. In this case, the measured oil recovery was 37.5% higher than that obtained when using water without additives.

Keywords: polyfraction nanoemulsion; chemical EOR; core floods; carbonates; contact angle (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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