Project Overview

Saline formations are viewed as the best carbon dioxide (CO2) storage candidate because they have the largest storage capacity and are widespread compared to depleted oil and gas reservoirs. Pressure buildup inhibits commercial-scale CO2 injection into storage formations because of fracturing pressure constraints. The heterogeneous nature of storage formations causes uneven CO2 saturation distribution, which negatively affects utilization of pore space available for storage (storage efficiency). Brine extraction from CO2 storage formations is viewed as a strategy to mitigate pressure buildup and control CO2 plumes. However, proper handling of extracted brine is required. Successfully demonstrating brine extraction and CO2 storage coupled with extracted brine treatment and handling will serve as a method to reduce the carbon footprint of fossil-fueled industrial processes, risk of fracturing confining formations because of excessive pressure buildup, and intrusion of CO2 and brine into adjacent formations.


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