North East Sub-Layers Block ASP Design Research

In ASP flooding, ultra-low interfacial tension of crude oil is produced and polymer adsorption in reservoir is reduced. In this paper, the following aspects on an in-depth indoor study: Identified polymer, alkali and surfactant for ASP, injection of its reasonable manner, reasonable ASP injection parameters and reasonable ASP injection rate. Through experiments and analysis of the following conclusions: North East Block ASP sub-layers in the ternary system benzene sulfonic acid .Salt form as the basic raw material and alkali surfactant mixtures of the ternary system has a low interfacial tension, alkylbenzene types of surfactants in strong base to achieve ultra-low interfacial tension of the broad, taking as a result of adsorption of sandstone , formation water dilution effect, you can watch live agent concentration and the concentration of alkali increased to 0.3% and 1.2%. Sub-layers for ASP flooding, polymer molecular weight should be chosen 14000000-19000000 between. After water flooding can greatly ASP enhanced oil recovery, in the light of the speed of polymer flooding can be increased to 0.15-0.2PV / y, recovery can improve about 20%, after optimization slug recovery after to increase more than 25%.