Abstract
Hydrocarbon fluid inclusions (HCFIs) in mineral grains of source, reservoir, or carrier rocks are of particular interest to the petroleum industry. The minute size of HCFIs warrants a combination of microscopy and spectroscopy for identification and characterization. This article presents fluorescence emission data of pure petroleum oils of known American Petroleum Institute’s gravities (APIG) and proposes an empirical tool for predicting the APIG of oils in micron-sized HCFIs through a noninvasive, nondestructive procedure using microscopy-based fluorescence estimates. It also documents how this empirical tool could be used as a way of inferring the APIG in HCFIs by considering the samples from RV-1 well (Mumbai offshore basin, India) as an example. RV-1 is a nonproducing well from the Mumbai offshore basin, India with proven commercial productivity. Fluorescence emission of 13 crude oil samples with known API gravities were recorded using a diode laser excited at 405 nm in order to estimate the API grav...
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