Title

Experimental Investigation of the Performance of Low Salinity Water Flooding at High Temperature

Abstract

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.

Meeting Name

32nd International Symposium of the Society of Core Analysts (2018: Aug. 27-30, Trondheim, Norway)

Department(s)

Geosciences and Geological and Petroleum Engineering

Comments

Chapter 11

Keywords and Phrases

EOR; LSW; Petroleum geochemistry

International Standard Book Number (ISBN)

978-3-030-01577-0; 978-3-030-01578-7

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2019 Springer Nature Switzerland, All rights reserved.

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