Shale oil hydrocarbon generation pressurization and staged hydrocarbon discharge evolution evaluation method and system
By establishing an evaluation method based on the conservation of matter and volume, and dynamically coupling the hydrocarbon generation and pressurization processes with hydrocarbon expulsion, the problem of quantitative description of shale oil accumulation processes in existing technologies has been solved. This enables accurate identification of hydrocarbon expulsion timing and episodes, and improves the calculability of shale oil exploration and the accuracy of accumulation models.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA UNIV OF PETROLEUM (EAST CHINA)
- Filing Date
- 2026-05-29
- Publication Date
- 2026-06-26
AI Technical Summary
Existing technologies are insufficient to quantitatively describe hydrocarbon generation and pressurization, fluid compression, hydrocarbon expulsion feedback, and breakthrough pressure changes during shale oil accumulation, making it difficult to accurately identify the timing, episodes, and in-situ retention stages of hydrocarbon expulsion.
An evaluation method based on the conservation of matter and volume is established. By introducing the compression behavior of crude oil, formation water and kerogen, and combining hydrostatic pressure and breakthrough pressure threshold, the formation pressure evolution and hydrocarbon expulsion triggering criteria are dynamically coupled to continuously simulate the curtain-style hydrocarbon expulsion process of closed pressurization-breakthrough depressurization-re-closed.
It enables quantitative evaluation of shale oil accumulation processes, identifies hydrocarbon expulsion timing and episodes, and improves the calculability of shale oil exploration and the accuracy of accumulation models.
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