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This is to certify that your paper entitled «Reservoir quality of upper Cretaceous Sarvak Formation in an oilfield located in Dezful Embayment, Southwestern Iran» was indexed with 15 pages, in the CIVILICA citation database, code COI:OILBCNF07_031, after evaluation and approval of the referees of the "The 7th International Conference on Technology Development in Oil, Gas, Refining and Petrochemical held in Tehran 2023.

While offering our congratulations on the indexation of your paper, please be informed that this certificate is prepared based on the information submitted by the secretariat of the above conference and the information contained in the CIVILICA database, and the accuracy of its content can be inquired at any time through link provided at the bottom of the page or scanning the code image.