关键词: α-烯基聚醚, 耐盐活性剂, 高矿化度, 耐盐

Abstract:

Epoxyethylene and epoxypropylene were polymerized by double metal cyanide (DMC) with unsaturated alcohol as initiator.The obtained polyether was sulfonated, and neutralized to prepare a salt-resisting surfactant.The surfactant resisted water salinity in a range of 2000 mg•L^-1 to 150000 mg•L-¹.In addition, the surfactant exhibited significant effect on reducing the surface tension of high salinity water from 80.5 mN•m^-1 to 37.1 mN•m-¹ at 30℃.Moreover, even when the concentration of calcium or magnesium cations in the water reached 10000 mg•L^-1, the surfactant solution remained colorless and transparent without deposition and flocculation.The experiment in oil field indicated that the salt-resisting surfactant reduced the viscosity of water-containing heavy oil from 85000 mPa•s to 14 mPa•s.After demulsification, the intrinsic viscosity of the dewatered crude oil decreased by half.

Key words: α-烯基聚醚, 耐盐活性剂, 高矿化度, 耐盐