ASP flooding system Research In Motion

For ASP flooding system, Mechanistic studies show: Surfactant? Alkali and polymer combination flooding best; alkali and oil processing polymer can improve the interfacial tension, and the surfactant and the presence of alkali can be The viscosity enhancing polymer; three components at low concentrations matched the most, which can enhance the overall effect. Recipe experiments show that: in the flooding system by adding alcohols, petroleum sulfonate in reducing losses during flooding, but the formation of the chromatographic separation effect to the loss of oil recovery capacity; lignin as a sacrificial agent in the drive oil expeller by adding urea? hexametaphosphate salt can enhance the adsorption capacity and reduce losses Na2CO3 and NaOH alkali such as NaOH agents can replace, reduce alkali consumption, enhanced oil recovery; polymer PAA (partially hydrolyzed polyacrylamide) Using the most, compared with the PAA biological xanthan gum thickener? salt? heat resistance and resistance to shear force capacity is better, but the cost is high, anti-poor biodegradability. ASP flooding, while having many advantages, the development of great potential, but in synergy? Flooding mechanism? Complex rules? Choose the right agent? Reduce costs and other issues still need further study.