Abstract
Abstract Foam propagation in co-injection is studied in a 10 m long flow apparatus, equipped with pressure ports and fluid sampling valves for every 1 m. The data are compared to the result of a foam flooding experiment in a core scale flooding experiment with the same porous medium. The core scale experiment was simulated with a numerical foam simulator model. The propagation experiments on the 10 m scale revealed that the foam front propagated significantly slower than the injected fluid front. It appeared that foam propagation was not limited by surfactant transport, but was delayed due to segregation of gas and surfactant solution, and by the presence of oil in the porous medium. P. 301
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