...Introduction Background Abstract Foam-Assisted-Water-Alternating-Gas (FAWAG) injection has been proposed to improve the inherent unfavorable mobility ratio of gas and liquid in WAG process. The foam reduces gravity override and gas channeling as to improve volumetric sweep efficiency...

... efficiency can be impaired if strong foam is created in the immediate wellbore environment, thereby hampering injection and pore-volume throughput. Sustained injectivity during FAWAG is hence an important component to derisk either in pilots, or lab and simulation studies. This paper demonstrates the impact...