%0 Journal Article %T EFFECT OF CARBONATE ADDITIVES CA AND MG ON CHANGES IN COMPOSITION AND PROPERTIES OF HEAVY OIL IN THE PROCESS OF LOW-TEMPERATURE CRACKING %A Antonova, M.Y. %A Davletshin, A.R. %A Telyashev, R.G. %A , .. %K HEAVY OILS, DOLOMITE, CALCITE, CRACKING, X-RAY DIFFRACTION, SARA, RHEOLOGY %J Herald of Technological University %D 2025 %N 27 %P 5 %I Kazan National Research Technological University