Performance evaluation of temperature-resistant nano-surfactants

Surfactant flooding is a common technique in tertiary oil recovery. However, due to the high temperature of some reservoirs and strong heterogeneity caused by their own geological conditions, use surfactants high-temperature limited. Temperature - resistant can reduce interfacial tension, improve conformance increase washing efficiency In this paper, temperature-resistant nano-type surface active JCN-001 was developed laboratory. By testing its particle size distribution, experimental results determine that average range system 34.29nm, so it play better role low permeability reservoir Due unique nano properties, JCN at 0.2% concentration still maintain good effect about 110, oil/water tension reach 10-4nm/m, also ultra-low temperature, higher more significant According changes oil-water critical micelle determined be 0.2%. The static adsorption experiments dynamic were carried out. show nano-surfactants have resistance effectively consumption on rocks.