This article describes the existing technologies for the separation of vanadium, nickel and titanium from oils and heavy oil residues. The most developed is the technology of extraction of the above metals. To study the trends in the change of vanadium content in the oil of the Karazhanbas field over the past 50 years, samples were taken from various wells and horizons of the field. Sample preparation with deep dehydration was conducted on the selected oil samples, and then the samples were divided into two parts for laboratory studies in two different laboratories. Half of the samples remained at KazNIPImunaygas, the other part was labeled, packaged and sent to Gubkin University. They were analyzed for the content of vanadium according to the methodology of MVI No09-2017 «Procedure for determining the content of metals in oil» on the X-ray apparatus for spectral analysis of the SPECTROSCAN MAX series. It was noted that the vanadium content in the oil of the Karazhanbas field for 50 years decreased from 307,38 g/t to 120-180 g/t. Based on the residual content of vanadium in oil, a technical and economic assessment of options for extracting vanadium from oil at the Karazhanbas field was carried out based on the analysis of possible technologies for the extraction of vanadium, a study of possible equipment suppliers was carried out, a list of equipment and resources was compiled. The enlarged capital investments for the project were calculated, the indicators of resource consumption for the formation of operating costs were identified.
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