▎ 摘　　要

NOVELTY - Preparation of amphiphilic graphene type oil displacement material involves adding hydrophobic modifier to kerosene to obtain oil phase, adding graphene oxide and hydrophilic modifier to deionized water to obtain water phase, adding the oil phase and the water phase to a four-necked glass bottle, stirring, blowing nitrogen, adding initiator and complexing agent, reacting, centrifuging, washing with ethanol, drying and crushing. The hydrophobic modifier is octylamine, decylamine, dodecylamine, tetradecylamine, hexadecylamine, octadecylamine, eicosanamine, dibutylamine, dihexylamine, dioctylamine, or didecylamine. The hydrophilic modifier is hydrophilic modifier (A) or hydrophilic modifier (B). The hydrophilic modifier (A) comprises alkoxy derivative (I). The hydrophilic modifier (B) comprises hydroxy ester compound (II). The complexing agent is disodium edetate, trisodium triacetate, or pentasodium diethyltriaminepentaacetate. USE - Preparation of amphiphilic graphene type oil displacement material used as oil displacement agent for high temperature and high salt reservoirs. ADVANTAGE - The method produces amphiphilic graphene type oil displacement material with low dispersion difficulty, excellent salt and temperature resistance, excellent long-term dispersion stability, and excellent oil displacement effect. The amphiphilic graphene type oil displacement material is effective even in small dosage. DETAILED DESCRIPTION - Preparation of amphiphilic graphene type oil displacement material involves adding hydrophobic modifier to kerosene to obtain oil phase, adding graphene oxide and hydrophilic modifier to deionized water to obtain water phase, adding the oil phase and the water phase to a four-necked glass bottle equipped with a stirrer, a nitrogen tube, a spherical condenser and a thermometer, stirring at 500-2000 rpm, blowing nitrogen for 30 minutes, adding initiator and complexing agent, reacting at 0-60 degrees C for 12-48 hours, centrifuging the product, washing it with ethanol, drying and crushing. The mass ratio of hydrophobic modifier to kerosene is 1:5-100. The mass ratio of graphene oxide to hydrophobic modifier is 1:0.1-50. The mass ratio of graphene oxide, hydrophilic modifier and deionized water is 1:0.2-50:25-500. The mass ratio of graphene oxide, initiator and complexing agent is 1:0.03-2:0.01-1. The particle size of the graphene oxide is 50-1500 nm. The hydrophobic modifier is octylamine, decylamine, dodecylamine, tetradecylamine, hexadecylamine, octadecylamine, eicosanamine, dibutylamine, dihexylamine, dioctylamine, or didecylamine. The hydrophilic modifier is hydrophilic modifier (A) or hydrophilic modifier (B). The hydrophilic modifier (A) comprises alkoxy derivative of formula (I). The hydrophilic modifier (B) comprises hydroxy ester compound of formula (II). The complexing agent is disodium edetate, trisodium triacetate, or pentasodium diethyltriaminepentaacetate. The initiator is cerium ammonium nitrate, cerium sulfate or cerium ammonium sulfate. m = 1-10; R = H or CH3;and n = 1-10.