Initial interpretation of Fastnet Oil & Gas’ processed 3D seismic surveys over its Mizzen and Deep Kinsale acreage offshore Ireland has revealed 22 structures in the Upper Jurassic to Lower Cretaceous interval.

The largest structure, spanning an area of 110 sq km (42.5 sq mi), underlies the Kinsale gas field in the Celtic Sea.In Mizzen, there appear to be two large structures covering respectively 45 and 63 sq km (17.4 and 24.3 sq mi), and four seismic amplitude-driven structural leads that could be gas anomalies.

In addition, there are numerous potential stratigraphic traps in the Lower Cretaceous and further deep-seated structural leads in the Triassic and Jurassic, Fastnet says, which last year’s 3D seismic campaign has better defined than the legacy 2D seismic.

The company has opened a data room to potential farm-in partners.