Sedimentological and diagenetic insights into the Sarvak Formation evaluating reservoir characteristics and depositional environments in the Zagros Basin
Abstract The Sarvak Formation in the Yadavaran oilfield within the Zagros Basin is a significant hydrocarbon reservoir characterized by complex sedimentological and diagenetic features influencing its reservoir quality. This study aims to investigate the sedimentological facies and diagenetic proces...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2025-08-01
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| Series: | Journal of Petroleum Exploration and Production Technology |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s13202-025-02063-y |
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| Summary: | Abstract The Sarvak Formation in the Yadavaran oilfield within the Zagros Basin is a significant hydrocarbon reservoir characterized by complex sedimentological and diagenetic features influencing its reservoir quality. This study aims to investigate the sedimentological facies and diagenetic processes within the Sarvak Formation to enhance understanding of its reservoir potential. A comprehensive analysis was conducted using core samples, thin-section petrography, scanning electron microscopy (SEM), and X-ray diffraction (XRD) techniques. The primary objectives included identifying distinct facies assemblages and correlating them with diagenetic alterations. The results indicate the presence of three key facies: lagoonal facies, characterized by fine-grained, bioturbated sediments with a high organic content, exhibiting a porosity of approximately 15–20%; open marine facies, consisting of well-sorted, coarse-grained sands with a lower organic content and porosity ranging from 10 to 12%; and transitional facies, which display mixed characteristics of both lagoonal and open marine environments, with porosity values between 12 and 18%. The integration of advanced analytical techniques, including SEM and XRD, provided detailed insights into mineralogical composition and microstructural features, highlighting the impact of diagenetic processes on reservoir quality. This study contributes to a more nuanced understanding of the Sarvak Formation’s reservoir characteristics, offering valuable insights for hydrocarbon exploration and production strategies in the Zagros Basin. |
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| ISSN: | 2190-0558 2190-0566 |