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Integrated basin modeling to evaluate Cenomanian source rock in the Iranian sector of the Persian Gulf
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 79th EAGE Conference and Exhibition 2017, Jun 2017, Volume 2017, p.1 - 5
Abstract
The early to middle Cenomanian argillaceous limestone and shale sequence in the Iranian sector of Persian Gulf (ISPG) is the main source rock for the Cretaceous petroleum system in the area. But the source rock has no good distributed observed data to evaluate it in the basin. In order to remove this limitation, construction a basin-wide dynamic model subjected for investigating.
Burial history and maturity level of the source rock were calculated and mapped over the entire basin during the geologic times by the model. The final results of the integrated model indicated that the sequence is a good oil prone source rock in some parts of the area which is characterized by good total organic carbon, fine organic matter type, noticeable thickness, and high maturity. The main hydrocarbon kitchen identified in the area has been located in the southeast of the ISPG. This source rock began to generate oil from 65 to 45 Ma and gas during 45–6 Ma in the area and the times of peak oil generation are recorded in the range 55–50 Ma at the depths below 2800 m in the main depocentres. Present day maturity status of the source rock is in wet gas condition.