Rheology of foam
Both experimental and theoretical analyses were carried out on the rheological behavior of foam. This foam was generated by simultaneously injecting compressed air and an aqueous solution of a commercial foaming agent into a short porous medium. It then flowed into a capillary tube viscometer having 4 interchangeable glass tubes of different radii. A mathematical analysis was developed whereby both the very pronounced effects of fluid slippage at the tube wall and the foam compressibility were taken into consideration. The apparent viscosity was independent of foam quality, but not of tube radius. Bubble size and bubble size distribution were measured under a microscope and the change of bubble size with time studied through photomicrographs. Both the mean bubble diameter and bubble size distribution were functions of foam quality. The cumulative size distribution as a function of a quality is represented by a modified Weibull function. Although the flowing foam behaved like a pseudoplastic fluid, the static foam had a measureable gel strength which increased with foam quality. (18 refs.)
- Research Organization:
- Gulf Research and Develop Co; Stanford Univ
- OSTI ID:
- 5263591
- Report Number(s):
- CONF-690997-
- Journal Information:
- Soc. Pet. Eng. AIME, Pap.; (United States), Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Vol. SPE2544; ISSN SEAPA
- Country of Publication:
- United States
- Language:
- English
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36 MATERIALS SCIENCE
360603* -- Materials-- Properties
COLLOIDS
COMPRESSIBILITY
DISPERSIONS
ENGINEERING
FOAMS
GELS
MATERIALS
MEASURING INSTRUMENTS
MECHANICAL PROPERTIES
PARTICLE SIZE
PHYSICAL PROPERTIES
POROUS MATERIALS
RESERVOIR ENGINEERING
RESERVOIR ROCK
RHEOLOGY
SIZE
VISCOSIMETERS
VISCOSITY