Quantifying the low salinity waterflooding effect

    Research output: Contribution to journalArticlepeer-review

    4 Scopus citations

    Abstract

    Low salinity waterflooding (LSW) has shown promising results in terms of increasing oil recovery at laboratory scale. In this work, we study the LSW effect, at laboratory scale, and provide a basis for quantifying the effect at field scale by extracting reliable relative permeability curves. These were achieved by experimental and numerical interpretation of laboratory core studies. Carbonate rock samples were used to conduct secondary and tertiary unsteady-state coreflooding experiments at reservoir conditions. A mathematical model was developed as a research tool to interpret and further validate the physical plausibility of the coreflooding experiments. At core scale and a typical field rate of ~1 ft/day, low salinity water (LS) resulted in not only ~20% higher oil recovery compared to formation water (FW) but also recovered oil sooner. LS water also showed capability of reducing the residual oil saturation when flooded in tertiary mode. The greater oil recovery caused by LSW can be attributed to altering the wettability of the rock to less oil-wet as confirmed by the numerically extracted relative permeability curves.

    Original languageBritish English
    Article number1979
    JournalEnergies
    Volume14
    Issue number7
    DOIs
    StatePublished - 1 Apr 2021

    Keywords

    • Coreflooding
    • Enhanced oil recovery (EOR)
    • Low salinity waterflooding
    • Simulation

    Fingerprint

    Dive into the research topics of 'Quantifying the low salinity waterflooding effect'. Together they form a unique fingerprint.

    Cite this