The geological history and geochemical evaluation of Block 2/2, Offshore Norway

Block 2/2 is situated on the northeastern flank of the Central Graben within the ‘Ula Trend’, which is characterized by the development of Upper Jurassic reservoir sandstones. The 2/2 area underwent a relatively quick subsidence along the WNW-trending Hidra Fault Zone in late Jurassic times. The tectonic activity was influenced by halokinesis, and the geometry along the fault zone varies significantly. Three wells have so far been drilled in block 2/2. Besides gas discoveries in Oligocene sands in wells 2/2–1 and 2/2–2, oil has also been found in Upper Jurassic sandstones in well 2/2–1.