琼东南盆地第四纪中央峡谷体系沉积演化与油气前景

裴健翔; 宋鹏; 郭明刚; 毛雪莲

doi:10.3799/dqkx.2022.487

Volume 48 Issue 2

Feb. 2023

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Article Navigation > Earth Science > 2023 > 48(2): 451-464

Pei Jianxiang, Song Peng, Guo Minggang, Mao Xuelian, 2023. Sedimentary Evolution and Hydrocarbon Exploration Prospect of the Quaternary Central Canyon System in the Qiongdongnan Basin. Earth Science, 48(2): 451-464. doi: 10.3799/dqkx.2022.487

Citation:

Pei Jianxiang, Song Peng, Guo Minggang, Mao Xuelian, 2023. Sedimentary Evolution and Hydrocarbon Exploration Prospect of the Quaternary Central Canyon System in the Qiongdongnan Basin. Earth Science, 48(2): 451-464. doi: 10.3799/dqkx.2022.487

Citation:

Pei Jianxiang, Song Peng, Guo Minggang, Mao Xuelian, 2023. Sedimentary Evolution and Hydrocarbon Exploration Prospect of the Quaternary Central Canyon System in the Qiongdongnan Basin. Earth Science, 48(2): 451-464. doi: 10.3799/dqkx.2022.487

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Sedimentary Evolution and Hydrocarbon Exploration Prospect of the Quaternary Central Canyon System in the Qiongdongnan Basin

doi: 10.3799/dqkx.2022.487

1.
CNOOC Ltd-Hainan, Haikou 570312, China
2.
Hainan Energy LTD, Haikou 570105, China
3.
CNOOC Ltd-Zhanjiang, Zhanjiang 524057, China

Received Date: 2022-12-29
Publish Date: 2023-02-25

Abstract

Abstract

Based on the drilling data and new high⁃quality seismic data of the Central Canyon in Qiongdongnan Basin, the morphology, internal composition, sedimentary evolution process, and main controlling factors of the Quaternary Central Canyon System are systematically studied. The results indicate that the Central Canyon System went through 3 stages of evolution: the erosion and filling stage in the early Upper Miocene(Ⅰstage), the calm filling stage in the early Pliocene(Ⅱstage), the rejuvenation stage in early Quaternary(Ⅲ stage), and the evolution of the Canyon System was jointly controlled by tectonic activity and source supply. The negative paleogeomorphy and provenance supply that controlled the formation of the Central Canyon System in the first two stages still existed in the western segment of the Quaternary canyon. The early multi⁃provenance system in the western segment changed to the single provenance of the Qiupenhe River in the Con Son Swell in the Quaternary, and the provenance supply was sufficient. The progradational continental slope controlled the semi⁃restricted negative landform and sandy deposition to migrate gradually to the southeast, and the Canyon was filled up in the early Quaternary (S₁₄). Under the guidance of this understanding, three⁃stage semi⁃restricted⁃scale submarine fan groups in the shallow strata of the western segment of the Quaternary canyon are discovered for the first time. These submarine fan groups have superior conditions for reservoir formation and have the new hydrocarbon accumulation model of "shallow⁃deep dual hydrocarbon source supplying, multiple preferential pathways conducting, shallow gas hydrate sealing, submarine fan below the hydrate stable zone controlling accumulation", and are new fields of large⁃middle scale oilfield exploration with broad prospects.
- central canyon system,
- Quaternary,
- sedimentary evolution,
- hydrocarbon prospects,
- Qiongdongnan Basin,
- petroleum geology

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References(37)

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Sedimentary Evolution and Hydrocarbon Exploration Prospect of the Quaternary Central Canyon System in the Qiongdongnan Basin

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