Abstract: The present invention relates a method for treating oil well using an emulsion composition. More particularly, the method comprises a step of introducing an emulsion composition in an amount of 0.01% to 100% to pore volume of oil reservoir into the oil well, such that interfacial tension between the oil well and the reservoir reduces to 10?4 mM/m or below thereby enable removal of oil therefrom.

Abstract: The present invention relates a method for treating oil well using an emulsion composition. More particularly, the method comprises a step of introducing an emulsion composition in an amount of 0.01% to 100% to pore volume of oil reservoir into the oil well, such that interfacial tension between the oil well and the reservoir reduces to 10?4 mM/m or below thereby enable removal of oil therefrom. (No illustrative FIGURE.

Abstract: An emulsion composition of treating near-wellbore obstruction comprising an aqueous phase in 0.5 to 40% by weight of total composition; an non-aqueous phase in 15 to 90% by weight of total composition; a surfactant un 2 to 60% by weight of total composition; and a compound having a Chemical structure I in 1 to 30% by weight of total composition R1—CONH—[R2—NH—R3]n—HNOC—R4 ??(Chemical structure I) in which R1, R2, R3 and R4 are linear, branched or aromatic carbon-containing substituents having 2 to 26 carbon atoms and n is an integer ranges from 1 to 100, wherein each of the substituents comprises an alkyl group, a carbonyl group, a carboxylic group, an amine group, or an amide group.