纳米微球乳液的室内合成及其评价

In this paper, a kind of nano-microsphere emulsion for profile control and water shutoff is provided. Using acrylamide, AMPS and crosslinking monomers as the water phase, emulsifier compounded with white oil and emulsifier as oil phase, the interfacial tension of the nano-microsphere emulsion is reduced, The stability of the emulsion product is good, the particle size of the prepared nano-microspheres is small, and the expansion multiple after entering the formation is high, and it can be applied to medium and low permeability reservoirs to improve the oil recovery. The preparation steps of the inverse microemulsion polymerization method are relatively simple, the reaction time is short, and the product performance is stable. The nano-microsphere emulsion is temperature resistance and salt resistance, has good water solubility, is easy to construct on site, and has a good promotion prospect. This article also discussed the effects of the different ratios of AM and AMPS monomers and the oil-water ratio on the microsphere products.