Improved ASP Process Using Organic Alkali

Abstract

Abstract This paper describes the use of a new type of organic alkali that replaces and improves upon traditional inorganic alkalis such as sodium hydroxide and sodium carbonate. The new organic alkali was evaluated in Alkaline Surfactant Polymer (ASP) formulations containing commonly used surfactants and polymers. The effect of organic alkali on IFT, adsorption and viscosity was compared to that of a conventional inorganic alkali in these formulations. The organic alkali was found to be compatible with brines containing high TDS and high divalent cation concentrations. They can be used in brines without the need for softening and in some cases they provide better results than conventional alkali in systems where either can be used. The organic alkalis have the advantage of improved compatibility with unsoftened brines, surfactants and polymers. Their non-toxic, biodegradable properties make them particularly suitable for environmentally sensitive applications such as offshore and inland lakes.