سال انتشار: ۱۳۸۵

محل انتشار: اولین کنگره مهندسی نفت ایران

تعداد صفحات: ۱۷

نویسنده(ها):

R Farajzadeh – Delft University of Technology Department of Geotechnology, Section of Petroleum Engineering
P.L.J Zitha – Delft University of Technology Department of Geotechnology, Section of Petroleum Engineering

چکیده:

Foams are involved in many industrial processes, including foods and beverages, fire
fighting, subsoil environmental remediation and enhanced oil recovery. In these
applications, foam stability and dynamics depend on the permeability of the thin liquid
films to gases. An important parameter in the description of the foam permeability is the
thickness of the thin liquid films. The foam film permeability is can be measured using
(laser) light interferometry. In this paper, we survey the principles of this technique and
compute the expressions for the thickness for a free standing foam film. The foam film is
consists of five layers: a core aqueous layer with two surfactant monolayers, each
consisting of consisting of hydrocarbon tails and polar head-groups sub-layers. from its
reflection intensity coefficient Ir for perpendicularly incident light.