▎ 摘　　要

NOVELTY - A paraffin inhibitor comprises a paraffin inhibiting polymer effective for suppressing the phase separation of paraffin wax from crude oil, and a graphene quantum dot covalently bonded to the paraffin inhibiting polymer. The graphene quantum dot has a particle size of 2-20 nm. USE - Paraffin inhibitor used for separating paraffin wax from crude oil (claimed) in oil-recovery, oil transportation, and oil processing facilities. ADVANTAGE - The paraffin inhibitor provides faster results, and real-time adjustments to addition rate and/or other dosage to control paraffin suppressant concentration in the oil, maintains an effective and economic dosage of paraffin suppressant to prevent paraffin deposition without use of excessive quantities of paraffin suppressant. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) graphene tagged crude oil composition, which comprises crude oil, and the paraffin inhibitor; and (2) measuring the amount of paraffin inhibitor in a crude oil, which involves adding 5-5000 ppm by weight of the paraffin inhibitor to a crude oil to form a graphene tagged crude oil composition, irradiating the graphene tagged crude oil composition with a source of light having a selected wavelengths (w1), measuring a luminescent emission of the graphene tagged crude oil composition at a selected wavelengths (w2). The measuring is carried out essentially contemporaneously with irradiation. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a graphene quantum dot tagged paraffin inhibitor.