Physical model experiment of heavy oil aquathermolysis with cobalt-iron based catalyst

Thermal EOR International Workshop III: "Thermal Methods for Enhanced Oil Recovery: Laboratory Testing, Simulation and Oilfields Applications"

Sitnov, S.^1 ; Baigildin, E.^1 ; Khelkhal, M.^1 ; Chemodanov, A.^1 ; Vakhin, A.^1

Kazan Federal University, 18 Kremlevskaya Str., Kazan, Russia^1

关键词: Destructive process;    High molecular weight;    In-situ formations;    Iron-based catalyst;    Physical model experiments;    Physical simulation;    Scientific researches;    Thermal conversion;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/282/1/012012/pdf
DOI  :  10.1088/1755-1315/282/1/012012

来源: IOP

【 摘 要 】

Increasing steam-thermal methods efficiency for heavy using various catalysts is generating considerable interest in scientific research all over the world. Thus, it is worth to optimize catalyst effectiveness during their in-situ formation from oil soluble precursors using different transition metals. In this paper, a physical simulation of heavy oil catalytic aquathermolysis from the Ashalchinskoye field was carried out. The process was carried out in the presence of a hydrogen donor and a mixture of oil-soluble iron and cobalt metal tallate (1:1 weight ratio) at temperatures 250°C and different exposure time (6 and 24 h). It was found that the most effective conditions for the thermal conversion of the oil under study are a temperature of 250°C at 24 hours. In this case, a significant decrease in the proportion of high molecular weight components, mainly resins (by 39 %) and viscosity (about 45 %) occurs due to the course of destructive processes. At the same time, GCMS analysis of the aromatic oil fraction showed that an increase in time promotes the redistribution of mono- A nd polyaromatic structures.