Viscosity control in petroleum recovery

摘要: In the described flooding process a predetermined amount of aqueous diluent is added to soluble oil from microemulsion viscosity. The then injected into an oil-bearing formation through at least one injection well. and crude petroleum in are displaced toward production well or wells allowing be recovered. may water. made up hydrocarbon, water, alkylary naphthenic mono-sulfonate surfactant, cosurfactant. volume 1 - 20% pore formation. (6 claims)