Development of a novel model to predict HPAM viscosity with the effects of concentration, salinity and divalent content

Abdullah Al-Hamairi, Waleed AlAmeri

    Research output: Contribution to journalArticlepeer-review

    21 Scopus citations

    Abstract

    Polymer flooding has been established as an effective enhanced oil recovery (EOR) technique and can be utilized in large-scale field expansions. With high success rates and efficiency, polymer flooding operates by increasing the viscosity of water, promoting greater sweep efficiency and resulting in higher oil recovery beyond conventional waterflooding. Predicting viscosity has been established by numerous researchers as an essential tool to study polymers behavior under varying conditions. Previous model has proven a link between polymer viscosity and zero shear rate viscosity, relaxation time, hardness, and many other factors. This research initially reviews different types of polymers that can be applied successfully in EOR, demonstrate conditions that can alter polymer viscosity in porous medium, and analyze models that predict polymer bulk and in situ viscosity. The research then discusses a novel modification of the power law model to predict HPAM (SAV10) viscosity in a wide range of shear rates based on polymer concentration, fluid salinity, and divalent content. A polymer rheology study was carried out on SAV10 at various concentrations (750–5000 ppm) and brine salinities (43–210 k ppm). Results show the effectiveness of the model and the ability to predict viscosity accurately in low to medium shear rates, while in high shear rate, a slight deviation was noticeable.

    Original languageBritish English
    Pages (from-to)1949-1963
    Number of pages15
    JournalJournal of Petroleum Exploration and Production Technology
    Volume10
    Issue number5
    DOIs
    StatePublished - 1 Jun 2020

    Keywords

    • Enhanced oil recovery
    • EOR
    • HPAM
    • Model
    • Polymer
    • Power law
    • Rheology
    • SAV10
    • Viscosity

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