Impact potential of hypersaline brines released into the marine environment as part of reservoir management
Jerry Blackford, Plymouth Marine Laboratory
Marius Dewar, Plymouth Marine Laboratory
DATE: April 17, 2020
TIME: 11:00 – 11:30 AM (CET)
DURATION: 30 min incl. Q&A
The ERA-ACT funded Pre-ACT project presents findings from its Work Package 1, focusing on understanding the consequences of pressure changes in the reservoir during geological CO2 storage.
Pressure management of reservoirs used for carbon dioxide storage is a key component of maintaining cap rock and reservoir integrity of the storage complex. Where storage utilizes saline aquifers, pressure management may potentially require production of reservoir brines and their dispersion in over-lying seawater or re-injection
During this webinar we will describe a very high resolution hydrodynamic model system, based on the Unstructured Grid, Finite-Volume Coastal Ocean Model (FVCOM), adapted for sea-surface and seabed hypersaline brine releases, using detailed bathymetry and focusing from kilometers down to 5.0 meters around the discharge locations. We will illustrate the extent of the temperature and salinity anomalies, and via tracers, estimate the extent of contaminant spread. We will describe the impact potential from a range of scenarios and dispersion methods, including a combination of seabed, outcrop and sea-surface discharges, across different seasons with specific mixing characteristics.
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The Pre-ACT Team