Partners sought for UK carbon capture project
Partners are being sought for a project to study the impact of removing brine from under-sea stores that could house captured carbon.
The call from the Energy Technologies Institute follows a previous ETI project in its Carbon Capture and Storage (CCS) technology programme that led to CO2 Stored, the UK’s principal storage screening database.
The database is said to have made a number of assumptions to estimate capacity and injectivity for each of the identified 550 stores off the UK’s coast. One of these was that brine was not produced from the reservoir store before, during or after CO2 injection.
According to ETI, if a reservoir store is pressurising as a result of CO2 injection, brine can potentially be removed through a purpose built well or wells from the store to depressurise it whilst still retaining the operation and integrity of the store.
The brine could potentially be sent to another aquifer or disposed of in the sea. Brine production is a recognised way of controlling the reservoir store pressure and potentially its flow, and its use is a contingency in several store designs.
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