... drainage, resulting in foam stability behavior. Defoamers with various structures ranged from amine short-chain, amine long-chain, amine branched-chain and amide-chain were analysed to determine the effect of molecular structure at various concentration from 5 – 40ppm. The defoaming ability was determined...

... of the reservoir, bringing the industry one step closer to effectively recovering immobile/trapped fluid from brown field reservoirs. van dijke reservoir saturation drainage contact angle relative permeability wettability upstream oil & gas oil saturation displacement oil-wet system al dahli...