The novel method of synthesis of nanostructured materials for the enhancing recovery in oil displacement technologies

The work is dedicated to a research into the physicochemical aspects of carbon nanopowder production from the gas phase by the pyrolysis of the initial precursors in a cyclic adiabatic process in a flow-through chemical compression reactor (CCR). The method allows the production of carbon nanomaterials, such as the carbon nanoparticles and globular soot particles, as well, as the core-shell structures representing the 4–7 nm composite particles with a SiC crystal core covered with graphene layers. Products have controlled and reproducible properties, and output capacity of the method is sufficient for technological purposes. The nanopowders are characterized by high-resolution transmission electron (TEM) and scanning electron (SEM) microscopy, X-ray diffraction analysis and Raman spectroscopy. The nanomaterials were used to manufacture their aqueous suspensions - nanofluids, which have shown their effectiveness in enhancing oil recovery in oil displacement technologies. • Cyclic flow-through gas-phase method for producing carbon and composite nanomaterials. • Morphology of nanomaterials - composite core-shell structures and carbon nanoparticles. • Carbon and composite nanomaterials are the basis for aqueous suspensions. • Self-organization of core-shell structures on the border of nanofluid and oil. • The enhanced efficiency of oil displacement from the reservoir by means of nanofluids.