Effects and Mechanism of Gaseous Acid on Surface Microtopography of Tight Sandstone Reservoirs.

ACS Omega · 2026 · PMC13325151 · PMID 42395970

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a decreasing trendno p-value reported

an increasing trendno p-value reported

From the root-mean-square roughness (Sa) curve, it is observed that the roughness values of all experimental groups show an increasing trend with the passage of time, and the roughness of three groups except HBF4 has a decreasing trend after 30 min, especially in the dissolution process of HF.

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