Petroleum Geochemistry

Internship Report from the year 2014 in the subject Geography / Earth Science - Miscellaneous, grade: 2,3, RWTH Aachen University (Geologie, Geochemie und Lagerstätten des Erdöls und der Kohle (LEK)), course: Laborpraktikum, language: English, abstract: Eight different samples of various locations have been analysed during the practical course. The

samples consisted of two source rock samples (Kimmeridge Clay and Blue Lias), two oil sands

(Wealden oil sand and Osmington Mills oil sand) and four oil samples including Libya oil, R828, Iraq

oil (09_205) and Schwedeneck. The Kimmeridge Clay represents an immature source rock with very

good potential. The Blue Lias source rock, kerogen type II, shows the same conditions as the

Kimmeridge Clay. The other Kimmeridge Clay sample kimsrf 1 indicates kerogen type I. The Wealden

oil sand shows intense biodegradation and plots in the area of a type II kerogen. The Osmington Mills

oil sand plots in type I kerogen area, and also shows intense biodegradation. The Libya oil is

comprised of a type II/III kerogen, similar to the R828 oil sample which additionally shows oxidizing

marine conditions. Iraq oil plots in the area of a type II kerogen and was deposited under marine

hypersaline conditions. The last sample, the Schwedeneck oil, was deposited under rather oxidizing

conditions and sterane analysis suggests an early oil window stage.