Innovative fluorescence spectroscopic techniques for rapidly characterising oil inclusions

•QGF+ directly measures dry, disaggregated reservoir grains after robust cleaning.•iTSF measures crushed inclusion solvent extracts from the QGF+ cleaned grains.•Fluorescence intensities correlate moderately well to total n-alkanes in inclusions.•Spectral peaks and ratios broadly reflect thermal maturity and/or API gravity.•Fluorescence spectrophotometry of oil inclusions is a useful screening technique.