eng Oriental Scientific Publishing Company Biosciences Biotechnology Research Asia 0973-1245 2016-06-21 12 Spl.Edn.2 473 483 10.13005/bbra/2224 13006 article Natalia Vladimirovna Oknina 1 Khusain Magamedovich Kadiev 1 Anton L’vovich Maksimov 1 Alexander Evgenievich Batov 1 Malkan Khusainovna Kadieva 1 Askhab Umaltovich Dandaev 1 Joint-Stock Company "Elektrogorsky Institut Neftepererabotki" Budenova street, Building 5, Elektrogorsk, Russia142530. Results of the investigations demonstrate that for preprocessing and dewatering of reservoiroil sludge by solvent method on laboratory facility the most suitable solvent is toluene. Using calculations and experiments, the optimum parameters of solvent processing of oil sludgewith extraction of organic components have been determined, which correspond to the temperature of 100°C, mixer rotation speed of 500 rpm, inert gas flow rate (N2) of 30 nl/h, water to toluene ratio of at least 1:5 by weight. Conditions of separation of mineral components of oil sludgeby filtration have been determined: 45- 50°C, slightly excessive pressure. A complex layout of oil sludge preprocessing have been proposed, including additional distillation of organic components of oil sludgeat 300°C, facilitating obtaining of heavy fraction suitable for the use as initial raw material for hydroconversion. https://www.biotech-asia.org/vol12_nospl_edn2/studies-on-preprocessing-of-reservoir-oil-sludges-for-further-hydroconversion/ Oil sludge; Waste products; Reservoir sludge; Solvent extraction; Toluene; Hydroconversion