Barents Sea – Lower to Middle Jurassic plays
| Group/Formation | Age | Area | Reservoir rock | Depositional environment | Trap | Source rock | Critical factors | Examples of fields | Examples of discoveries | Examples exploration wells | |
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| bjl,mj-5 | Kapp Toscana Group with Tubåen, Nordmela, Stø and Fruholmen Formations | Rhaetian- Norian | Hammerfest Basin | Sandstone | Fluvial, deltaic, estuarine tidal and shallow marine | Rotated fault blocks and horst structures | Upper Jurassic shale (Hekkingen Formation), possible contribution from Triassic shales | The thickness of Nordmela and Stø Formations decreases towards northeast. The presence of a cap rock with sufficient sealing capacity. Preservation and leakage of petroleum owing to tilting, reactivation of faults and Cenozoic uplift and erosion, especially for shallow and/or truncated structures. |
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| bjl,mj-6 | Kapp Toscana Group with Tubåen, Nordmela, Stø and Fruholmen Formations | Hettangian- Norian | Troms-Finnmark Fault Complex, Tromsø Basin, Veslemøy High, Bjørnøya Basin, Stappen High | Sandstone | Fluvial, deltaic, estuarine tidal and shallow marine | Rotated fault blocks and horst structures | Upper Jurassic shale (Hekkingen Formation), possible contribution from older source rocks | The thickness of Nordmela and Stø Formations decreases towards northeast. The presence of a cap rock with sufficient sealing capacity. Preservation and leakage of petroleum owing to tilting, reactivation of faults and Cenozoic uplift and erosion, especially for shallow and/or truncated structures. |
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| bjl,mj-7 | Kapp Toscana Group with Tubåen, Nordmela, Stø and Fruholmen Formations | Hettangian- Norian | Bjarmeland Platform and Nordkapp Basin | Sandstone | Fluvial, deltaic, estuarine tidal and shallow marine | Rotated fault blocks and horst structures. In the Nordkapp Basin: Stratigraphic traps related to salt diapers, rotated fault blocks may also occur | Early to Middle Triassic Steinkobbe Formation | The thickness of Nordmela and Stø Formations decreases towards northeast. The presence of a cap rock with sufficient sealing capacity. Preservation and leakage of petroleum owing to tilting, reactivation of faults and Cenozoic uplift and erosion, especially for shallow and/or truncated structures. |
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