DUBLIN -- EIRGAS and Star Energy Group have identified a location for a proposed gas storage scheme offshore eastern Ireland.
The Undersea Large-scale Saline Sequestration and Enhanced Storage (Ulysses) project is designed to assess the suitability of Triassic-age saline sandstone reservoir sequences in the offshore Kish Bank basin for carbon sequestration.
Numerous exploration wells in the area over the past 30 years have demonstrated the presence of saline reservoirs roughly 1.5 km (0.93 mi) below the seabed, with overlying sealing shale.
In August 2008 the partners initiated a study over the northern and western shallow waters of the basin. According to EIRGAS’ parent company Providence Resources, a site has been confirmed which could be adapted for offshore natural gas cavern development, similar to sites proposed for another project in the Lough Larne area of Northern Ireland.
Further geotechnical studies have supported reports that the Kish basin could accommodate carbon storage capacity of around 270 million metric tons (297 million tons).
Kinsale Energy operates Ireland’s sole gas storage facility at the SW Kinsale Head field offshore Cork, providing supplies of up to 8 bcf. Providence points out that an Irish governmental green paper on energy recommends at least three months of reserve/storage capacity should be built up, equivalent to around 45 bcf.