Title:
Impact potential of hypersaline brines released into the marine environment as part of reservoir management
Register for the Webinar
PRESENTER(S):
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
Description/purpose
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 to a secondary storage facility. Whilst the characteristics of these brines vary greatly, some may be hypersaline (exceeding 200 PSU), hot (exceeding 50°C), anoxic and / or with elevated levels of heavy metals. Undiluted, such brines may have the potential to be detrimental to ecosystems. However, dispersion and dilution in well mixed shelf sea environments act to reduce this impact potential.
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.
About the Pre-ACT Webinars
To access the webinar, you must register via the link above. By registering you will receive a unique link that you use to enter the webinar.
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Best regards,
The Pre-ACT Team
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