Abstract
Here, laser-induced breakdown spectroscopy (LIBS) is employed to identify constituent elements distinguishing nitrogen, oxygen, sulfur (NSO), and heavy metals in crude oil-saturated carbonate bedrock. The analysis of the spectra for both the bare rock samples and the oil-saturated specimens revealed the presence of NSO and heavy metal species (Ni, V) as the characteristics of heavy compounds in crude oil. On the other hand, the laser induced fluorescence (LIF) spectra of the crude oil are obtained over various temperatures ranging 50 °C–150 °C. The light compounds demonstrate better temperature sensitivity than the heavy compounds, leading to the identification/discrimination of those compounds.
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