Deep Coal-rock Gas in China: A Review of Distribution, Geological Characteristics, and Its Enrichment Conditions.

ACS Omega · 2025 · PMC12163686 · PMID 40521490

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an increasing trendno p-value reported

found that the fixed carbon content of the BX Formation coal-rocks in the Ordos Basin gradually increased with the degree of thermal evolution ( Figure a), while the matrix porosity also showed an increasing trend with the rise in fixed carbon content ( Figure b).

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