Developed emulsification in porous media flow

Publikationen: KonferenzbeitragPaper(peer-reviewed)

Abstract

With the use of surfactants, the interfacial tension between oil and water can be lowered to a degree that solubilisation of oil by the injection water leads to a near-miscible displacement. The resulting type of emulsion, however, depends on the way how the two phases contact each other and ultimately on the mixing, respectively flow regime. While mixing can be turbulent in classic test tube experiments, under laminar flow
conditions in porous media the miscibility can develop slowly over time, depending on the dispersion mechanisms that facilitate the contact between the phases. The present study investigates this developed miscibility during surfactant flooding. We perform microfluidic experiments with generic oil and surfactant solutions in a wide salt concentration range across optimum displacement conditions. The study shows that in addition to a classic immiscible displacement, oil is increasingly solubilized and transported in a phase with a foam-like texture that develops from a drop-traffic flow. The extend and the stability of those phases depends on the salinity and hence of the efficiency of the surfactant solution.

Details

OriginalspracheEnglisch
Seiten349-357
Seitenumfang9
StatusVeröffentlicht - 15 Sep 2021
VeranstaltungInternational Symposium of the Society of Core Analysts - Online
Dauer: 13 Sep 202116 Sep 2021

Konferenz

KonferenzInternational Symposium of the Society of Core Analysts
Zeitraum13/09/2116/09/21