东部陆相混积页岩储层差异对比及页岩油富集模式

杜心宇; 钱门辉; 沈臻欢; 冷筠滢; 李楚雄; 黎茂稳; 李志明; 马晓潇; 曹婷婷; 黄振凯; 贾梦瑶; 孙中良

doi:10.3799/dqkx.2026.069

Volume 51 Issue 5

May 2026

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Article Navigation > Earth Science > 2026 > 51(5): 1698-1720

Du Xinyu, Qian Menhui, Shen Zhenhuan, Leng Junying, Li Chuxiong, Li Maowen, Li Zhiming, Ma Xiaoxiao, Cao Tingting, Huang Zhenkai, Jia Mengyao, Sun Zhongliang, 2026. Comparative Analysis of Eastern Continental Mixed Sedimentary Shale Reservoirs and Shale Oil Enrichment Patterns. Earth Science, 51(5): 1698-1720. doi: 10.3799/dqkx.2026.069

Citation:

Du Xinyu, Qian Menhui, Shen Zhenhuan, Leng Junying, Li Chuxiong, Li Maowen, Li Zhiming, Ma Xiaoxiao, Cao Tingting, Huang Zhenkai, Jia Mengyao, Sun Zhongliang, 2026. Comparative Analysis of Eastern Continental Mixed Sedimentary Shale Reservoirs and Shale Oil Enrichment Patterns. Earth Science, 51(5): 1698-1720. doi: 10.3799/dqkx.2026.069

Citation:

Du Xinyu, Qian Menhui, Shen Zhenhuan, Leng Junying, Li Chuxiong, Li Maowen, Li Zhiming, Ma Xiaoxiao, Cao Tingting, Huang Zhenkai, Jia Mengyao, Sun Zhongliang, 2026. Comparative Analysis of Eastern Continental Mixed Sedimentary Shale Reservoirs and Shale Oil Enrichment Patterns. Earth Science, 51(5): 1698-1720. doi: 10.3799/dqkx.2026.069

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Comparative Analysis of Eastern Continental Mixed Sedimentary Shale Reservoirs and Shale Oil Enrichment Patterns

doi: 10.3799/dqkx.2026.069

Du Xinyu^{1, 2, 3
,
,},
Qian Menhui^{1, 2, 3},
Shen Zhenhuan^{1, 2, 3},
Leng Junying^{1, 2, 3},
Li Chuxiong^{1, 2, 3},
Li Maowen⁴,
Li Zhiming^{1, 2, 3},
Ma Xiaoxiao⁴,
Cao Tingting^{1, 2, 3},
Huang Zhenkai⁴,
Jia Mengyao^{1, 2, 3},
Sun Zhongliang^{1, 2, 3}

1.
Wuxi Research Institute of Petroleum Geology, SINOPEC, Wuxi 214126, China
2.
State Key Laboratory of Shale Oil and Gas Enrichment Mechanism and Effective Development, Wuxi 214126, China
3.
SINOPEC Key Laboratory of Hydrocarbon Accumulation Mechanism, Wuxi 214126, China
4.
Petroleum Exploration and Production Research Institute, SINOPEC, Beijing 102206, China

Received Date: 2025-10-21
Publish Date: 2026-05-25

Abstract

Abstract

The Lower Es₃ sub-member (Bonan subsag) and Fu2 member (Subei basin) represent typical mixed sedimentary shale reservoirs in eastern China. They share common characteristics such as multi-source hydrocarbon supply, source-reservoir coexistence, and micro-migration of hydrocarbons to dominant layers. However, they also exhibit significant differences in burial mode, thermal evolution degree, lithofacies development, and reservoir properties, which have restricted the in-depth study of shale oil enrichment patterns in continental mixed sedimentary shale reservoirs.This study selected the two sets of typical continental mixed shale reservoirs as research objects. Based on a systematic review of previous research methods and findings, a variety of experimental techniques were comprehensively employed to conduct comparative studies on reservoir differences and analyze enrichment mechanisms, thereby clarifying the shale oil enrichment patterns.The results show follows. ①Burial mode affects the basic reservoir characteristics by controlling mineral composition and sedimentary structure types. ②Vitrinite reflectance (R_o) not only determines oil-bearing property and occurrence characteristics, but also continuously modifies reservoir space types through thermal evolution. ③ Differences in reservoir space control the direction of hydrocarbon micro-migration, while the oil-bearing property and hydrocarbon proportion of surrounding laminae affect the initiation and intensity of micro-migration. Furthermore, the shale oil enrichment patterns of dominant lithofacies in the two study areas are revealed: the Lower Es₃ sub-member (Bonan subsag) is dominated by "mud-generating and limestone-storing" and "mud-generating and sand-storing" modes, while Fu2 member (Subei basin) is characterized by "mud-generating and dolomite-storing" and "mud-generating and sand-storing" modes.Appropriate maturity, sufficient organic matter supply, high macropore proportion, and a well-developed pore-fracture system are the core controlling factors for shale oil enrichment. A hydrocarbon allocation effect exists within lamina assemblages that meet the above conditions-light free hydrocarbons can micro-migrate to adjacent laminae with enrichment potential and then migrate laterally into macropores for accumulation. The shale oil enrichment pattern constructed in this study provides a feasible framework for the analogy evaluation of mixed sedimentary shale reservoirs and deepens the understanding of the enrichment and high-yield mechanism of shale oil under source-reservoir coupling control.
- mixed sedimentary shale,
- reservoir properties,
- source-reservoir coupling,
- shale oil,
- enrichment pattern,
- petroleum geology

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References(77)

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沈阳化工大学材料科学与工程学院沈阳 110142

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Comparative Analysis of Eastern Continental Mixed Sedimentary Shale Reservoirs and Shale Oil Enrichment Patterns

doi: 10.3799/dqkx.2026.069

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通讯作者: 陈斌, bchen63@163.com

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