Nonpolar foams in production of heavy oils

Maini, B. Sarma, H. Role of Nonpolar Foams in Production of Heavy Oils in Foams, Fundamentals and Applications in the Petroleum Industry, Schramm, L.L. (Ed.), American Chemical Society Washington, DC, 1994, pp. 405-420. 

Role of Nonpolar Foams in Production of Heavy Oils... 

Most likely, the in situ formation of an oil-continuous foam plays a role in the production of heavy oils under solution gas drive. Before discussing this role of oil-continuous foams, the similarities and differences between such nonpolar, nonaqueous foams and the aqueous foams will first be reviewed. 

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