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Shekarifard, Ali, Safaei-Farouji, Majiid, Tarhandeh, Elham, Namjoyan, Mehdi, Rashidi, Mehrab, Bahrami, Hossein. (1404). Characterization of organic matter and petroleum generation potental of the Middle Jurassic Kashafrud Formation, Eastern Koppeh-Dagh, NE Iran: Implications for improved petroleum system understanding. , (), -. doi: 10.22059/geope.2025.389440.648800
Ali Shekarifard; Majiid Safaei-Farouji; Elham Tarhandeh; Mehdi Namjoyan; Mehrab Rashidi; Hossein Bahrami. "Characterization of organic matter and petroleum generation potental of the Middle Jurassic Kashafrud Formation, Eastern Koppeh-Dagh, NE Iran: Implications for improved petroleum system understanding". , , , 1404, -. doi: 10.22059/geope.2025.389440.648800
Shekarifard, Ali, Safaei-Farouji, Majiid, Tarhandeh, Elham, Namjoyan, Mehdi, Rashidi, Mehrab, Bahrami, Hossein. (1404). 'Characterization of organic matter and petroleum generation potental of the Middle Jurassic Kashafrud Formation, Eastern Koppeh-Dagh, NE Iran: Implications for improved petroleum system understanding', , (), pp. -. doi: 10.22059/geope.2025.389440.648800
Shekarifard, Ali, Safaei-Farouji, Majiid, Tarhandeh, Elham, Namjoyan, Mehdi, Rashidi, Mehrab, Bahrami, Hossein. Characterization of organic matter and petroleum generation potental of the Middle Jurassic Kashafrud Formation, Eastern Koppeh-Dagh, NE Iran: Implications for improved petroleum system understanding. , 1404; (): -. doi: 10.22059/geope.2025.389440.648800

Characterization of organic matter and petroleum generation potental of the Middle Jurassic Kashafrud Formation, Eastern Koppeh-Dagh, NE Iran: Implications for improved petroleum system understanding

Geopersia
مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 08 اردیبهشت 1404
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22059/geope.2025.389440.648800
نویسندگان
Ali Shekarifard* 1؛ Majiid Safaei-Farouji2؛ Elham Tarhandeh3؛ Mehdi Namjoyan4؛ Mehrab Rashidi3؛ Hossein Bahrami3
1دانشگاه تهران، دکتری ژئوشیمی نفت
2Department of Geosciences, University of Montanuniversität Leoben, Leoben, Austria
3Exploration Directorate, National Iranian Oil Company (NIOC), Tehran, Iran
4Petro Gostar Permayon Company, Tehran, Iran
چکیده
Geochemical characterization of organic matter (OM) from the Middle Jurassic Kashafrud Formation, as main possible source rock of the gas-fields in the Eastern Koppeh-Dagh from NE Iran, is main aim of this study. The total organic carbon (TOC) ranges from 0.10 to 1.37 wt% (on average: 0.46 wt%) and 0.04 to 1.5 wt% (on average: 0.56 wt%) for the surface sections and wells, respectively. Although mean residual TOC from the Kashafrud Formation is poor to fair but there are still good source rocks in the Formation that show higher content of carbonate with the higher TOC (up to 1.5 wt%). TOC and carbonate content show covariance. VRo ranges from 0,6 to 1,97% hence the kashafrud Formation is thermally early mature to over-mature. Kerogen is dominated by amorphoud organic matter (AOM) of phytoplanktonic origin with moderate to high amount of phytoclasts. Biomarker data confirms this result. The source rocks from the Kashafrud Formation, after maturing, generating, and expelling petroleum (gas and oil), can still be considered as a gas-prone source rock with Type III kerogen. Rock-Eval pyrolysis and organic petrography indicate presence of non-indigenous hydrocarbons (HCs) and therefore, confirm generation and expulsion of oil within the Kashafrud Formation. The mixed siliciclastic-carbonate facies, has played a more significant role in oil generation and expulsion. In the eastern Koppeh Dagh, there is still a chance of developing gas and even oil fields in potentual resrevoir rocks within the Kashafrud Formation and overlying formations.
کلیدواژه‌ها
Organic Geochemistry؛ Organic Petrography؛ Middle Jurassic Kashafrud Formation؛ Eastern Koppeh-Dagh؛ NE Iran
آمار
تعداد مشاهده مقاله: 77





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