Three-Way Coupled Modeling Evaluates CO2 Sequestration in Depleted Reservoir

Three major depleted gas reservoirs in the Central Luconia field offshore Sarawak, Malaysia, are being evaluated for future carbon-dioxide (CO₂) storage. A three-way coupled modeling approach that integrates dynamic, geochemistry, and geomechanics models is used to obtain the cumulative effect of all three changes. This integrated model provides a more-accurate estimate of CO₂ storage capacity, caprock-integrity evaluation, CO₂-plume migration path, and volume of CO₂ stored through different mechanisms.

Background

The CO₂ storage sites being evaluated are depleted gas reservoirs that have been in production for a few decades. At the end of their producing life, they have the potential to be converted into CO₂ storage sites.