COMPOSITIONS WHICH SUPPRESS PARAFFIN DEPOSITION, AND METHODS FOR PREPARING AND USING THEM Russian patent published in 2019 - IPC C09K8/524 E21B37/06 

FIELD: petroleum chemistry.

SUBSTANCE: present invention relates to graphene quantum dot-labeled agents which suppresses paraffin deposition, such as paraffin deposition inhibitors and paraffin labeling agents dispersed, as well as methods for preparing and using said paraffin. Graphene quantum dots are covalently bonded with residues of paraffin deposit inhibitors or dispersed with paraffin dispersants to form labeled paraffin deposit suppressing agents which are active in inhibiting paraffin crystallisation or dispersing crystallized solid paraffin in crude oil and compositions containing crude oil. Points can be adapted to fluorescence at wavelengths with minimized matching of natural fluorescence of crude oil, which enables to measure concentration of agents which suppress paraffin deposition in crude oil or compositions containing crude oil. Labeled agents are used to trace dispersion and distribution of agents which suppress paraffin deposition in oil and compositions containing it, for example, during extraction, processing, transportation and transportation of crude oil, by sampling oil or composition in situ and measuring fluorescence of the collected material.

EFFECT: technical result is an increase in processing efficiency.

14 cl, 6 dwg, 1 ex