What question did this study set out to answer?

This research aims to understand how CO2 and brine interact in sandstone reservoirs and evaluate CO2 trapping mechanisms.

Session 26. Oral Presentation for: Investigation of CO2 flow and trapping in the Otway Basin through digital core analysis and pore-network modelling

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Digital core analysis evaluates CO2 trapping efficiency in sandstone, indicating enhanced storage predictions.

This research aims to understand how CO2 and brine interact in sandstone reservoirs and evaluate CO2 trapping mechanisms.
High-resolution micro-CT images were acquired for sandstone core samples from the Paaratte Formation.
Three-dimensional digital rock models were created and calibrated using porosity measurements.
Two-phase pore-network simulations were performed to analyze CO2 and brine flow under controlled conditions.
Residual CO2 trapping is significantly influenced by pore geometry and wettability.
Lower pore-throat aspect ratios enhance CO2 connectivity, while higher ratios increase trapping.
The study provides a framework to predict multiphase flow properties to improve CO2 storage performance.

Masoud Aslannezhad (2026) studied this question.

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