"The main hydrocarbon molecules present in crude oil, like paraffins, naphtenes and aromatics, are discussed. Structural formulas are shown as graphical representations. Moreover, the main method to analyze the composition of oil, gas chromatography, is explained. || After fractionating the crude...

We learned that oil results from kerogen, which in turn comes from organic matter. This oil is then present in source rocks. The source rocks get overpressured and oil moves from the source rocks to the reservoir rocks. Reservoir rocks can be imaged with seismic by geophysicists, and this is also...