Table 1 Optimized parameters of the Corey relative-permeability model for air-water flow in the Bentheimer sandstone; the parameters for the gas phase relative permeability in absence of surfactant are  = 0.587; ng = 0.938; Sgr = 0.03.

From: Effect of Foam on Liquid Phase Mobility in Porous Media

Parameters

No surfactant

0.713

2.460

0.25

0.03% AOS

0.713

2.460

0.200

0.1% AOS

0.713

2.460

0.184

0.5% AOS

0.713

2.460

0.135

0.5% Amph.

0.713

2.460

0.181

All data

0.720

4.423

0.05