Experimental Study of Oil-Water Displacement Dynamics in Berea Sandstone DOI Creative Commons

Zhanhe Jia,

Wenbin Jiang, Mian Lin

et al.

Energies, Journal Year: 2025, Volume and Issue: 18(8), P. 1923 - 1923

Published: April 10, 2025

Understanding pore-scale oil-water two-phase flow dynamics in reservoir rocks is fundamental for optimizing petroleum exploitation. However, limitations real-time observation have hindered comprehensive characterization of these processes. This study employs a novel three-dimensional visualization platform that integrates online micro-CT imaging (3.78 μm resolution) with displacement experiments Berea sandstone. Experiments conducted at 20 °C and 50 across rates (0.10–0.35 mL/min) revealed distinct temperature-dependent saturation patterns: non-monotonic N-type behavior (initial increase, decrease, then increase rate) V-type decrease followed by increase) °C, accounting 76.0–94.3% observed variations. Quantitative analysis demonstrated dominant patterns correlate the evolution maximum oil cluster volumes their dynamic merging-splitting Significantly, we identified temperature-sensitive preferential pathways maintain stable phases independent rate variations, occupying 17.1% 13.6% pore space respectively. These findings advance our understanding migration mechanisms revealing quantifying pathway formation, providing insights development through enhanced fluid distribution varying depths temperature conditions.

Language: Английский

Experimental Study of Oil-Water Displacement Dynamics in Berea Sandstone DOI Creative Commons

Zhanhe Jia,

Wenbin Jiang, Mian Lin

et al.

Energies, Journal Year: 2025, Volume and Issue: 18(8), P. 1923 - 1923

Published: April 10, 2025

Understanding pore-scale oil-water two-phase flow dynamics in reservoir rocks is fundamental for optimizing petroleum exploitation. However, limitations real-time observation have hindered comprehensive characterization of these processes. This study employs a novel three-dimensional visualization platform that integrates online micro-CT imaging (3.78 μm resolution) with displacement experiments Berea sandstone. Experiments conducted at 20 °C and 50 across rates (0.10–0.35 mL/min) revealed distinct temperature-dependent saturation patterns: non-monotonic N-type behavior (initial increase, decrease, then increase rate) V-type decrease followed by increase) °C, accounting 76.0–94.3% observed variations. Quantitative analysis demonstrated dominant patterns correlate the evolution maximum oil cluster volumes their dynamic merging-splitting Significantly, we identified temperature-sensitive preferential pathways maintain stable phases independent rate variations, occupying 17.1% 13.6% pore space respectively. These findings advance our understanding migration mechanisms revealing quantifying pathway formation, providing insights development through enhanced fluid distribution varying depths temperature conditions.

Language: Английский

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