Abstract
A series of foam-generation experiments and measured effects of selected parameters in porous media is reported, with the main objective of providing empirical data to allow the definition of a surfactant screening procedure that is mechanically relevant for a novel production process exploiting the gas-blocking properties of foam. Foam was generated by a gas displacing surfactant solution from long porous media at fixed pressure gradient typical of those during flow in oil reservoirs. The gas-blocking state of foam was defined as the state that may follow such a displacement, at which gas is the only phase flowing through the porous medium sturated with a uniform foam. The results presented in this paper validate the experimental method as being suitable for screening surfactants for gas-blockage applications.
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