Oil Source and Entrapment Epoch of the Ordovician Oil Reservoir in the Kongxi Burial-Hill Zone, Huanghua Depression, North China |
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作者姓名: | WANG Tieguan WANG Feiyu LU Hong The Key Laboratory of Petroleum Entrapment Mechanism of Ministry of Educationin the University of Petroleum Beijing YANG Chiyin LIAO Qianjin and ZHOU Jiansheng Geological Research Institute Dagang Oilfield |
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摘 要: | An oil flow obtained from the Middle Ordovician Fengfeng Formation carbonate reservoir in the well KG-3, Kongxi burial-hill zone in 1993 marked a breakthrough in petroleum exploration of the high-mature Lower Palaeozoic strata, North China. Both the Lower member of the Fengfeng Formation and the Second Member of the Upper Majiagou Formation in the Middle Ordovician are supposed to be the main source beds. Oil generation peaks range from 1.0% to 1.6% in Ro, showing a "lag effect" of oil generation in high-mature carbonate source rocks under multicyclic tectonic movement conditions. The Kongxi burial-hill zone adjoins a potential Ordovician source kitchen. The KG-3 Ordovician burial-hill reservoir has undergone two oil filling events, i.e., an early event in the Late Carboniferous-Permian and a more significant late event in the early Eogene.
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Oil Source and Entrapment Epoch of the Ordovician Oil Reservoir in the Kongxi Burial-Hill Zone, Huanghua Depression, North China |
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Authors: | WANG Tieguan WANG Feiyu LU Hong The Key Laboratory of Petroleum Entrapment Mechanism of Ministry of Educationin the University of Petroleum Beijing YANG Chiyin LIAO Qianjin and ZHOU Jiansheng Geological Research Institute Dagang Oilfield |
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Abstract: | An oil flow obtained from the Middle Ordovician Fengfeng Formation carbonate reservoir in the well KG-3, Kongxi burial-hill zone in 1993 marked a breakthrough in petroleum exploration of the high-mature Lower Palaeozoic strata, North China. Both the Lower member of the Fengfeng Formation and the Second Member of the Upper Majiagou Formation in the Middle Ordovician are supposed to be the main source beds. Oil generation peaks range from 1.0% to 1.6% in Ro, showing a "lag effect" of oil generation in high-mature carbonate source rocks under multicyclic tectonic movement conditions. The Kongxi burial-hill zone adjoins a potential Ordovician source kitchen. The KG-3 Ordovician burial-hill reservoir has undergone two oil filling events, i.e., an early event in the Late Carboniferous-Permian and a more significant late event in the early Eogene. |
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Keywords: | burial-hill reservoir source rocks "lag effect" oil-source correlation oil entrapment epoch |
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