A method for identifying a supercritical liquid-like methane fluid in a geological history period
By combining fluid inclusion analysis with laser Raman spectroscopy and microthermometry, the problem of identifying supercritical liquid-phase methane fluids in deep oil and gas exploration has been solved. This has enabled accurate reconstruction and identification of the state of methane fluids in geological history, improved the reliability of the identification results, and provided important support for deep oil and gas exploration.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA UNIV OF PETROLEUM (EAST CHINA)
- Filing Date
- 2026-06-17
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are insufficient to accurately identify and invert supercritical liquid-phase methane fluids in deep to ultra-deep high-temperature and high-pressure environments, leading to uncertainties in key prerequisites for deep oil and gas exploration and evaluation.
By combining laser Raman spectroscopy, microcryothermometry, and fluid density calculation with fluid inclusion analysis, and through petrographic screening, testing of single-phase methane-rich fluid inclusions, and homogenization temperature testing of symbiotic water-rich fluid inclusions, supercritical liquid-phase methane fluids were reconstructed and identified.
It has enabled accurate identification of supercritical liquid-phase methane fluids in geological history, improved the accuracy and reliability of the identification results, solved the key constraints in the study of the evolution of deep oil and gas reservoir fluids, and provided key support for deep oil and gas exploration.
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