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The spreading of oil on water in the surface-tension regime

1987; Cambridge University Press; Volume: 184; Linguagem: Inglês

10.1017/s0022112087002969

1469-7645

D.W. Camp, John C. Berg,

Enhanced Oil Recovery Techniques

Data which describe the unidirectional spreading of several pure oils and oilsurfactant mixtures on water in the surface-tension regime are reported. Leadingedge position and profiles of velocity, thickness and film tension are given as functions of time. The data are consistent with the numerical similarity solution of Foda & Cox (1980), although the measured dependence of the film tension on the film thickness often differs from the equilibrium relationship. The configuration of the oil film near the spreading origin may be either a coherent multimolecular layer or a multitude of thinning, outward-moving lenses surrounded by monolayer. The pure oils show an acceleration zone connecting the slow-moving inner region to a fast-moving outer region, while the oil-surfactant mixtures show a much more gradual increase in film velocity.