Source Rock Potential and Kerogen Evaluation of Lower Permian Faraghan Formation in Zagros Basin of Iran

The lower Permian Faraghan Formation is widely distributed in the Zagros Basin of Iran. The formation consists mainly of alternating sandstone and shale, and includes coal layers in the Zard Kuh and Chalisheh areas .For determining of hydrocarbon potential of the Faraghan sedimentary rocks as probable source rock and defining kerogen structure to evaluate petroleum systems in Paleozoic sequence, three exposed sections from the High Zagros area and five wells from Fars and Bandar Abbas and Persian Gulf were selected for Rocl Eval and PY-GC analysis. As results of source rock quality and potential, the majorities of samples from this interval seems have very little source potential and believed to be in gas prone at best. The Faraghan Formation is classified as poor source rock richness %Ro values maximizing at 1.4 classify the interval as more mature, within the gas generating window. Advanced Kerogen pyrolysis show Kerogen of the Farghan Formation is rich in aromatic and poor in aliphatic structure compared with the other probable source rock formations in Paleozoic series. The kerogen of Permian Dalan, Faraghan samples in high Zagros area derived from terrestrial plant produced alkyl-phenols in significantly higher amount. Their original immature kerogen might be Type ш.