Method for determining fireflooding combustion temperature of heavy oil reservoir by utilizing carbonate minerals

The invention provides a method for determining the fireflooding combustion temperature of a heavy oil reservoir by using carbonate minerals, which comprises the following steps: carrying out calcination test on a core in a target research area under different temperature conditions, and after the core is cooled, comprehensively applying a cathode luminescent sheet and a scanning electron microscope, qualitatively analyzing the type, occurrence characteristics, content and relationship between the content and temperature of the carbonate minerals in the rock core under different calcination temperature conditions; determining the content of single carbonate minerals, the total content of carbonate minerals and the relationship between the single carbonate minerals and the temperature in the rock core under different calcination temperature conditions; establishing a carbonate mineral content and temperature relationship mathematical model under different calcining temperature conditions; according to the type