Bio surfactant is a biological macromolecules with a surface activity to be produced by microorganisms with the special conditions (such as a suitable carbon and nitrogen sources, organic nutrients, PH value and temperature, etc ) Compared with the chemical synthesis of surfactants, Bio surfactant addition to reducing the surface tension, emulsion stability and increase the role of the same foam, but also with the advantages of non-toxic, biodegradable, etc , which chemical synthetic surfactants have no
Water-soluble, small solid adsorption;
Better resistance and residual resistance factor, reduce the interfacial tension, better wet ability and reversal for oil rock surface;
A plurality of biological macromolecules can bridge to completely block the throat at the same time, so that the water flow around;
Resistance to salinity 30000mg / L, temperature stable at 120.
Lower cost, applicability, especially for the presence of the interlayer and the inner heterogeneity of the EOR in the oilfields;
Non-toxic, safety, environmental;
The dosages of product in oilfields is 0.5 to 1%