Article: Production from the Ravn field opens new possibilities

19. April 2017


map over Ravn

Oil production from the Ravn field commenced in the beginning of 2017.

Since award in the Danish 1st Round in 1984 the Ravn area has been extensively studied by various companies. The presence of oil in Upper Jurassic sandstone in this area was discovered by the exploration well Ravn-1 in 1986 and verified by an appraisal well Ravn-2 in 1987. The assessment was at the time, that production was not possible as the accumulation was situated at depths with high temperature and high pressure and the area was relinquished to the state.

The oil company Wintershall Noordzee B.V. was granted a license covering the area in the 6th Licensing Round in 2006 with Nordsøfonden as partner. Acquisition of new seismic data and the drilling of two additional wells, the appraisal well Ravn-3 and the exploration well Hibonite-1, confirmed the presence of oil in a larger region, the Greater Ravn Area. This newly achieved information showing better reservoir conditions in addition to the general upgrade of technology led to the decision to develop the Ravn field.

Development at new depth

The Ravn reservoir is Jurassic sandstone at depths of more than 4,000 m and is now the deepest reservoir in Denmark with production. A phased development approach has been planned in order to gather information on the productivity and other reservoir conditions for further development.

Nordsøfonden expects as partner that we in cooperation with the operator Wintershall Noordzee can use our experiences from this first phase of the development to achieve a better understanding of the depositional and structural pattern and the reservoir quality and thereby the ability to produce these deep reservoirs.

The data recovered is considered representative for similar reservoirs in the Greater Ravn Area comprising the discovery Hibonite and other prospects nearby. Together with the production data from the Ravn field, this information will provide the basis for decision of production in a larger scale from the area.

New infrastructure creates potentials

The production from Ravn and the expectation of further development in the Greater Ravn Area is opening for new opportunities in this part of the Danish Sector. Other discoveries in the area made in previous licensing rounds are also under evaluation. Wintershall Noordzee was in the 7th Licensing Round granted, together with Nordsøfonden, a license in an area covering the Elly and Luke discoveries. The Elly wells drilled in 1984, 1988 and 1992 demonstrated the presence of gas in Upper and Middle Jurassic sandstones, whilst the Luke exploration well discovered oil in Middle Jurassic sandstone.

The further evaluation of the Elly and Luke discoveries in addition to the development of Greater Ravn Area could bring synergy to the concept selection of the development and the establishment of export routes. New production facilities in this part of the Danish Sector could support and promote future oil and gas activities in the area and provide potential tie-in opportunities.






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