首页|Geochemical Characteristics and Hydrocarbon Generation Modeling of the Paleocene Source Rocks in the Jiaojiang Sag,East China Sea Basin

Geochemical Characteristics and Hydrocarbon Generation Modeling of the Paleocene Source Rocks in the Jiaojiang Sag,East China Sea Basin

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Jiaojiang sag in the East China Sea Basin is at the earlier exploration stage,where char-acterizing hydrocarbon generation of source rocks is important to understand oil-gas exploration po-tential.Utilizing geochemical and basin modeling analysis,hydrocarbon generation capacity and pro-cess of the Paleocene E1y,E1l and E1m formations were investigated.Results show that E1y and E1l mud-stones are high-quality source rocks with Type Ⅱ kerogen,which is dominated by both aquatic organ-isms and terrestrial higher plants deposited in sub-reduced environment.E1m mudstone interbedded with thin carbonaceous mudstone and coal is poor-quality source rock with Type Ⅲ kerogen,whose or-ganic matter was originated from terrestrial higher plants under oxidized environment.Controlled by burial and maturity histories,E1y and E1l source rocks experienced two hydrocarbon generation stages,which took place in the Late Paleocene and in the Middle to Late Eocene,respectively,and had high hy-drocarbon generation capacity with cumulative hydrocarbon volume of 363 and 328 mg/g,respectively.E1m source rock only had one hydrocarbon generation process in the Late Eocene,which had low hy-drocarbon generation capacity with cumulative hydrocarbon volume of only 24 mg/g.The future oil-gas exploration in the Jiaojiang sag should focus on hydrocarbon generation center and select targets in the central uplift formed before the Miocene with high-quality traps.

East China Sea BasinJiaojiang sagsource rockgeochemical characteristicshydro-carbon generationbasin modelingpetroleum geology

Chuang Lei、Shiyan Yin、Jiaren Ye、Jingfu Wu、Zhaosheng Wang、Bin Gao

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Collaborative Innovation Center of Green Development and Ecological Restoration of Mineral Resources,North China University of Science and Technology,Tangshan 063210,China

Key Laboratory of Tectonics and Petroleum Resources,China University of Geosciences,Ministry of Education,Wuhan 430074,China

CNOOC Research Institute Ltd,Beijing 100028,China

China National Science and Technology Major ProjectChina National Science and Technology Major ProjectFoundation of Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education(China University of Geosciences),Foundation of Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education(China University of Geosciences),Science and Technology Planning Project of Tangshan City,ChinaCNOOC Research Institute Ltd

2016ZX05024-002-0032017ZX05032-001-004TPR-2022-11TPR-2022-2422130213H

2024

10.1007/s12583-021-1528-6

地球科学学刊(英文版)
中国地质大学

地球科学学刊(英文版)

CSTPCD
影响因子：0.724
ISSN：1674-487X
年,卷(期)：2024.35(2)
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