松辽盆地古龙页岩油地质特征及关键科学问题探索

何文渊; 柳波; 张金友; 白龙辉; 田善思; 迟亚奥

doi:10.3799/dqkx.2022.320

Volume 48 Issue 1

Jan. 2023

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He Wenyuan, Liu Bo, Zhang Jinyou, Bai Longhui, Tian Shansi, Chi Yaao, 2023. Geological Characteristics and Key Scientific and Technological Problems of Gulong Shale Oil in Songliao Basin. Earth Science, 48(1): 49-62. doi: 10.3799/dqkx.2022.320

Citation:

He Wenyuan, Liu Bo, Zhang Jinyou, Bai Longhui, Tian Shansi, Chi Yaao, 2023. Geological Characteristics and Key Scientific and Technological Problems of Gulong Shale Oil in Songliao Basin. Earth Science, 48(1): 49-62. doi: 10.3799/dqkx.2022.320

Citation:

He Wenyuan, Liu Bo, Zhang Jinyou, Bai Longhui, Tian Shansi, Chi Yaao, 2023. Geological Characteristics and Key Scientific and Technological Problems of Gulong Shale Oil in Songliao Basin. Earth Science, 48(1): 49-62. doi: 10.3799/dqkx.2022.320

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Geological Characteristics and Key Scientific and Technological Problems of Gulong Shale Oil in Songliao Basin

doi: 10.3799/dqkx.2022.320

He Wenyuan^{1, 2
,
,},
Liu Bo^{1, 3
,
,
,},
Zhang Jinyou^{1, 4},
Bai Longhui^{1, 3},
Tian Shansi^{1, 3},
Chi Yaao^{1, 3}

1.
Heilongjiang Provincial Key Laboratory of Continental Shale Oil, Daqing 163712, China
2.
Daqing Oilfield Limited Company, Daqing 163002, China
3.
Key Laboratory of Continental Shale Hydrocarbon Accumulation and Efficient Development, Ministry of Education, Northeast Petroleum University, Daqing 163318, China
4.
Exploration and Development Research Institute of Daqing Oilfield Co. Ltd., Daqing 163712, China

Received Date: 2022-03-22
Available Online: 2023-02-01
Publish Date: 2023-01-25

Abstract

Abstract

The development of shale oil in Gulong Sag has achieved promising results. It is particularly important to summarize the geological conditions of Gulong shale oil enrichment for the next stage of exploration. In this paper, it aims to summarize the geological characteristics and exploration results of Gulong shale until now, raise the possible scientific and technological issues faced by production, and point out the direction of scientific research for further study. The shale of the first member of Qingshankou Formation in the north of the Songliao Basin is characterized by high organic matter content (TOC ranges in 2.0%-3.0%, with an average value of 2.7%), oil-prone organic type (mainly type Ⅰ kerogen, and the hydrocarbon generating material is mainly layered algae), high maturity (R_o ranges in 1.20%-1.67%) and high clay mineral content (more than 35%). Benefiting from the high ground temperature gradient, the organic matter of Qingshankou Formation in Gulong Sag is in high maturity stage, with light oil quality (ground density less than 0.8 g/cm³) and high gas oil ratio (more than 50 m³/m³), which shows the potential for large-scale development of high maturity shale oil. The unclear evaluation standards of Gulong shale oil, the uncertainty of single well EUR prediction and the lack of technology for large scale development are the main challenges for Gulong shale oil exploration and development. The breakthrough in the research on the unique mechanism of continental shale oil enrichment, such as the influence of clay minerals on the oil phase, the saturation of oil and water and the control of wettability on the permeability and replacement efficiency of fracturing fluid, will promote the rapid realization of the oil production target of the national development demonstration area, and is expected to expand the exploration and development achievements of Gulong shale oil on the basis of the development of light oil belt.
- Songliao Basin,
- Qingshankou Formation,
- continental shale oil,
- scale development,
- light oil,
- petroleum geology

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Geological Characteristics and Key Scientific and Technological Problems of Gulong Shale Oil in Songliao Basin

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