四川盆地东北部侏罗系凉高山组页岩油甜点与富集区评价

白雪峰; 王民; 王鑫; 李军辉; 卢双舫; 杨鑫翊; 李天一

doi:10.3799/dqkx.2024.910

Volume 49 Issue 12

Dec. 2024

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Bai Xuefeng, Wang Min, Wang Xin, Li Junhui, Lu Shuangfang, Yang Xinyi, Li Tianyi, 2024. Evaluation of Shale Oil Sweet Spot and Rich Area in Jurassic Lianggaoshan Formation, Northeast Sichuan Basin. Earth Science, 49(12): 4483-4500. doi: 10.3799/dqkx.2024.910

Citation:

Bai Xuefeng, Wang Min, Wang Xin, Li Junhui, Lu Shuangfang, Yang Xinyi, Li Tianyi, 2024. Evaluation of Shale Oil Sweet Spot and Rich Area in Jurassic Lianggaoshan Formation, Northeast Sichuan Basin. Earth Science, 49(12): 4483-4500. doi: 10.3799/dqkx.2024.910

Citation:

Bai Xuefeng, Wang Min, Wang Xin, Li Junhui, Lu Shuangfang, Yang Xinyi, Li Tianyi, 2024. Evaluation of Shale Oil Sweet Spot and Rich Area in Jurassic Lianggaoshan Formation, Northeast Sichuan Basin. Earth Science, 49(12): 4483-4500. doi: 10.3799/dqkx.2024.910

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Evaluation of Shale Oil Sweet Spot and Rich Area in Jurassic Lianggaoshan Formation, Northeast Sichuan Basin

doi: 10.3799/dqkx.2024.910

Bai Xuefeng^{1, 2, 3
,
,},
Wang Min^{1
,
,},
Wang Xin¹,
Li Junhui^{2, 3},
Lu Shuangfang⁴,
Yang Xinyi¹,
Li Tianyi¹

1.
State Key Laboratory of Deep Oil and Gas, China University of Petroleum, Qingdao 266580, China
2.
National Key Laboratory for Multi-Resource Collaborated Green Development of Continental Shale Oil, Daqing 163002, China
3.
PetroChina Daqing Oilfield Company LTD., Daqing 163002, China
4.
Sanya Offshore Oil & Gas Research Institute, Northeast Petroleum University, Sanya 572025, China

Received Date: 2024-06-10
Available Online: 2025-01-10
Publish Date: 2024-12-25

Abstract

Abstract

In 2020, the Ping'an 1 well in the northeastern part of Sichuan Basin tested 112.8 m³/d in the Jurassic Lianggaoshan Formation shale, making a breakthrough in shale oil exploration. However, the daily oil production of other Wells deployed in succession is very different, and the exploration and development effect are not ideal, which restricts the selection of shale oil rich areas. In response, in this paper, the oil sweet spot parameter (free oil amount) is obtained based on the improved ΔlogR method and the formation free oil recovery model, the physical property sweet spot parameter (porosity) is obtained by multiple linear regression analysis, the elastic energy sweet spot parameter (formation pressure coefficient) is predicted by Bowers method, the brittleness index predicted by comprehensive random forest algorithm and the Young's modulus obtained by mathematical model. By adopting an improved analytic hierarchy method, the comprehensive evaluation index of the sweet spot is obtained and applied to key shale oil exploration wells. It is considered that the potential favorable intervals of PY1 and PA1 wells are distributed in the bottom of Liangshang1, the bottom of Liangshang2 and the middle of Liangshang3, and the YQ1 well is distributed in the middle bottom of Liangshang1, the bottom and the top of Liangshang3. The target areas of plane optimization are mainly concentrated in the north of PY1 and PA1 wells and near YQ1 wells.
- shale strata,
- sweet spot evaluation,
- shale oil rich area,
- Lianggaoshan Formation,
- Northeast Sichuan,
- petroleum geology

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References(49)

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Evaluation of Shale Oil Sweet Spot and Rich Area in Jurassic Lianggaoshan Formation, Northeast Sichuan Basin

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