Lundin Norway AS struck a 6m (20 mi.) oil column through completion of Johan Sverdrup (formerly Avaldsnes/Aldous) appraisal well 16/5-4, located in the southwestern part of PL501. The discovery found an oil-filled reservoir section of excellent quality sand with a very high net-to-gross ratio.
Discovered by Lundin in 2010, the North Sea’s Johan Sverdrup is the largest discovery in the Norwegian Continental Shelf since the 1980s. It was also one of the largest discoveries in the world in 2010-2011. It has a production horizon extending beyond 2050.
The well was drilled to a total depth of 2075m (1.3 mi.) below mean sea level into sediments of probable Triassic sediments. No oil water contact was established. A comprehensive coring and logging program has been successfully completed, with a pressure gauge was installed to monitor the reservoir pressure for a period of 2-5 years. The well is permanently abandoned.
The major uncertainties associated with this appraisal well were the time-depth conversion to the top of the reservoir and the presence of reservoir,” said Ashley Heppenstall, president and CEO of Lundin Petroleum. "In this respect, we are pleased to have proved the extension of the reservoir at this location with excellent sand quality."
Well 16/5-4 was drilled approximately 4km (2.5 mi.) southwest of two other completed appraisal wells, 16/5-2S and 16/5-3. Well 16/5-3 confirmed that Johan Sverdrup extended from neighboring licenses PL265 and PL501 into PL502, which is operated by Statoil with an ownership share of 44.44%. It was the first exploration well in PL502.
The well was drilled using the semisubmersible drilling rig Bredford Dolphin. The rig will now proceed to appraisal well 16/3-7 at the southeastern flank of the Johan Sverdrup discovery, also located in PL501.
Lundin Norway is the operator in PL501 with 40% interest. Lundin’s partners include Statoil (40%) and Maersk Oil Norway AS (20%). Statoil’s license partners in PL502 is Petoro AS (33.33%).
Image shows map of Johan Sverdrup discovery. Image courtesy Statoil ASA.
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