Depositional Environments of the Mishrif Formation in Faihaa Oil Field, South of Iraq
| Autor: | Hiba A.Kareem Mohammed, Manal Sh. Al-kubaisi, Ghazi Hasan Alshar’a |
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| Rok vydání: | 2022 |
| Zdroj: | IOP Conference Series: Earth and Environmental Science. 1029:012035 |
| ISSN: | 1755-1315 1755-1307 |
| DOI: | 10.1088/1755-1315/1029/1/012035 |
| Popis: | The Mishrif Formation is one of the Iraqi major oil reserves in southern. This formation consists of limestone deposited during a Lower Cretaceous period as part of the main series of transgression depositions. Faihaa oil field is located close to Iraqi-Iranian borders, about 50km to the north of Basra city center. The area of this field is about 900 km2. It is bordered by the north Majnoon oil field, the south Sindibad field, the west Nahr Umr field, and the east husynia Iranian field. The microfacies and depositional environment of the Mishrif Formation in the Faihaa oil field were analyzed in this study. In Mishrif Formation, this study clarified several microscopic facies; more than 273 thin sections of core samples from one well (Faihaa-1) were examined, represented by Mudstone Microfacies Wackestone Microfacies and Packstone-Wackestone Microfacies. They were analyzing diagenesis processes and identifying Mishrif Formation. The two identified diagenetic environments that affected Mishrif reservoir in an open platform and restricted platform environments. The Mishrif Formation recognized five diagenetic processes, each with positive and negative implications on the quality of the reservoir. By creating and improving porosity and permeability, dissolution and dolomitization significantly impacted reservoir quality. Compaction and cementation have negative consequences by decreasing porosity and permeability, leading to reduced reservoir quality. |
| Databáze: | OpenAIRE |
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