Supercritical Fluid Propane–Butane Extraction Treatment
of Oil-Bearing Sands
V. F. Khairutdinova, T. R. Akhmetzyanova, F. M. Gumerova, I. Sh. Khabrieva, and M. I. Farakhovb, *
Translated by E. Boltukhina
aKazan National Research Technological University, Kazan, Tatarstan, Russia
bOOO Inzhekhim, Engineering-Innovation Center, Kazan, Tatarstan, Russia
Correspondence to: *e-mail: kvener@yandex.ru
Received 14 October, 2016
Abstract—The results of using processes of liquid and supercritical fluid extraction to isolate hydrocarbons from oil-bearing sands have been presented. The initial oil-bearing sand is characterized by a concentration of hydrocarbons of 7.23 wt % of the total weight of the sandstone. A mixture containing 75 wt % propane and 25 wt % butane has been used as the extracting agent. Extraction processes have been carried out in a temperature range of 80–140°C and pressure range of 5–10 MPa.
Keywords: supercritical fluid extraction, propane, butane, sandstone, hydrocarbons
DOI: 10.1134/S0040579517030083