Experimental Investigation of the Performance of Low Salinity Water Flooding at High Temperature
The potential of divalent cation Mg2+ in formation water (FW) for low-salinity (LS) EOR effect was previously investigated [Al-Saedi et al. in Oil recovery analyses and formation water investigations for high salinity-low salinity water flooding in sandstone reservoirs. SPE, 190845, 2018 1], where the increase in divalent cations in FW lowered the effect of LS water. In this study, we studied the importance of the same divalent cation (Mg2+ only) in the injected water. Berea sandstone cores were successfully flooded with FL and LS water at 130 C. While injecting both brines, samples of the effluent were analyzed for pH. Oil recovery experiments with a double Mg2+ concentration showed a lower LS water effect, meaning that the cores became more water-wet; however, the LS water effect was much greater when the amount of Mg2+ in the HS water was decreased by half.
H. N. Al-Saedi and R. E. Flori, "Experimental Investigation of the Performance of Low Salinity Water Flooding at High Temperature," Advances in Petroleum Engineering and Petroleum Geochemistry: Proceedings of the 1st Springer Conference of the Arabian Journal of Geosciences (CAJG-1), Tunisia 2018, pp. 47-50, Springer Nature Switzerland, Mar 2019.
The definitive version is available at https://doi.org/10.1007/978-3-030-01578-7_11
32nd International Symposium of the Society of Core Analysts (2018: Aug. 27-30, Trondheim, Norway)
Geosciences and Geological and Petroleum Engineering
Keywords and Phrases
EOR; LSW; Petroleum geochemistry
International Standard Book Number (ISBN)
Article - Conference proceedings
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