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To clarify the control mechanisms governing gas well productivity in tight sandstone reservoirs by analyzing microstructural influences.

July 11, 2026Energy ReportsOpen Access

Coupled control on production dynamics: Insights from geological genesis, pore-throat structure, and gas-water seepage in tight sandstone gas reservoirs

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To clarify the control mechanisms governing gas well productivity in tight sandstone reservoirs by analyzing microstructural influences.
Classified Shanxi Formation tight sandstone reservoirs into three types using geological and well-logging data.
Reconstructed rock network models to analyze structural parameter influences on seepage using relative permeability curves.
Established a cause-effect chain integrating geological features, rock structure, and flow properties.
Class I and Class II reservoirs have comparable initial gas rates but different stability and decline patterns.
Class II reservoirs show lower productivity with a faster decline than Class I, while Class III reservoirs have significantly lower productivity and a higher water-gas ratio.
A shift in pore-throat structure from concentrated to dispersed is observed as hydrodynamic energy decreases.

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Classifies tight sandstone reservoirs and analyzes their production dynamics, highlighting flow capacity influences and productivity variations.

Yilin Chang (2026) studied this question.

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Classifies tight sandstone reservoirs and analyzes their production dynamics, highlighting flow capacity influences and productivity variations.