INTERPRETATION OF HYDROCARBON GENERATION, MIGRATION AND THERMAL HISTORY OF MESOPOTAMIAN BASIN SOUTHERN IRAQ BASED 1D PETROMOD SOFTWARE
Seven oilfields are selected in the Mesopotamian basin, southern Iraq for studying thermal history, hydrocarbon generation and migration these are: Siba, Zubair, Nahr Umr, Majnoon, Halfaya, Amara and Kumait. The thermal and the basin histories of the basin are modeled using the PetroMod software. Modeling results proved that the generation of oil begin at the end of the Cretaceous and early of Tertiary as a response to the increasing of the temperature and burial depth of the Sulaiy and Yamama formations which are in turn accelerate the maturation of organic matter. Therefore, this formations act as main source rocks in the considered basin. The rest of the formations enter the maturation level during Miocene but they aren't capable to generate oil. The migration of oil in both horizontal and vertical directions begins at Miocene in western and southwestern parts of the basin that reflect the significant accumulation of oil in these parts.