Patent ID: 8955589
Filing Date: 2015-02-17
Classification: C09K,E21B

Abstract:
1. A method for producing hydrocarbon from porous media of a subterranean hydrocarbon bearing formation, comprising the steps of: (a) preparing a mixture of a surfactant, a co-surfactant and a carrier fluid, wherein the mixture contains each of the surfactant and the co-surfactant at a concentration of between 1 and 4% wt; (b) transporting the mixture to the porous media; (c) holding the mixture in the porous media in the presence of water for a period of time sufficient to form a water film on the surfaces of the porous media; (d) producing hydrocarbon through water film coated surfaces of the porous media of the formation; (e) monitoring flow of hydrocarbon from the porous media during the producing step; and (f) when the flow of hydrocarbon decreases below a desired amount, indicating that the water film on the surfaces of the porous media is removed, repeating steps (a)-(e), wherein the surfaces of the porous media prior to treatment with the mixture have hydrocarbons adhered to them, and wherein the water film is formed over the surfaces and the hydrocarbons adhered to the surfaces.