ISSN:
0001-1541
Keywords:
Chemistry
;
Chemical Engineering
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
A qualitative analysis is developed for the displacement of an unstable foam in a porous structure. The effects of the magnitude of the London-van der Waals forces, of the surface tension, of the surface viscosities, of the quality (volume fraction of the gas), of the bubble size, and of the viscosity of the foaming agent solution are investigated. A number of qualitative conclusions are drawn regarding three aspects of mobility control: distribution of bypassed oil, speed of displacement, and displacement efficiency.Ideally, any change in formulation should increase both the speed of displacement and the displacement efficiency. This is possible only by decreasing the surface viscosities. With all of the other variables, whenever either the speed of displacement or the displacement efficiency is increased, the other is decreased. Whether both the speed of displacement and the displacement efficiency actually increase on reducing the surface viscosities depends on whether the effects of the surface viscosities are dominant.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/aic.690310620
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