What question did this study set out to answer?

The central goal is to characterize the pore structure and understand the flow dynamics within ultra-low permeability sandstone reservoirs.

March 25, 2026Scientific ReportsOpen Access

Multiscale microscopic pore structure characterization and storage–flow coupling mechanisms in ultra-low permeability tight sandstone reservoirs

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Authors

CLCunlei LiLiaoning Shihua University DSDong-Rui SuLiaoning Shihua University PCPing ChenFujian Medical University

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Implication

This investigation examines pore structure and flow mechanisms in ultra-low permeability sandstone, indicating implications for efficient resource development.

Key Points

The central goal is to characterize the pore structure and understand the flow dynamics within ultra-low permeability sandstone reservoirs.
Conducted thin-section analysis and various imaging techniques including SEM and micro-CT.
Employed nitrogen adsorption and high-pressure mercury intrusion to assess pore characteristics.
Calibrated NMR data with adsorption-intrusion results to build a continuous pore size distribution.
Analyzed sedimentary and diagenetic processes affecting reservoir properties.
Identified diverse pore types characterized by a bimodal distribution dominated by nanopores.
Demonstrated that sedimentary processes lead to reservoir heterogeneity, impacting grain size and architecture.
Found that compaction and cementation reduce storage and flow capacity while dissolution increases pore development.
Noted that seepage behavior is driven by pore structures, where pores are critical for storage and pore throats for flow.

Cite This Study

Li et al. (2026) studied this question.

synapsesocial.com/papers/69c37b33b34aaaeb1a67d5be https://doi.org/10.1038/s41598-026-42495-y

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Implication

This investigation examines pore structure and flow mechanisms in ultra-low permeability sandstone, indicating implications for efficient resource development.

Multiscale microscopic pore structure characterization and storage–flow coupling mechanisms in ultra-low permeability tight sandstone reservoirs

Discussion

Member takes

Implication

Key Points

Cite This Study

Multiscale microscopic pore structure characterization and storage–flow coupling mechanisms in ultra-low permeability tight sandstone reservoirs

Discussion

Member takes

Implication

Key Points

Cite This Study

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