Lundin Petroleum AB has announced that its wholly owned subsidiary Lundin Norway AS has successfully completed the appraisal well 16/1-28S and production test on the Rolvsnes discovery in the PL338C on the Utsira High in the Norwegian North Sea.
The appraisal well is located approximately 3 kilometres from the Lundin Norway operated Edvard Grieg platform and is the third well on the Rolvsnes oil discovery. The main objective was to confirm commercial rates from a horizontal well drilled in fractured and weathered basement reservoirs, similar to those currently producing in the northern area of the Edvard Grieg field.
The well was drilled horizontally in the reservoir interval and encountered 2,500 metres of fractured and weathered basement. Extensive data acquisition and sampling have been carried out in the reservoir, including a 10-day production test with production logging and bottom hole fluid sampling. A maximum constrained production rate of 7,000 bopd was achieved, while the 5 day main flow period was held at a production rate of 4,200 bopd. The test results show good reservoir productivity and connection to a significant oil volume that benefits from aquifer pressure support, which are positive factors towards demonstrating commercial recovery at Rolvsnes.
Following these positive well results, the gross resource range for the Rolvsnes discovery has been increased to between 14 and 78 MMboe from the previous range of between 3 to 16 MMboe. The long-term production behaviour from this reservoir type needs to be understood better and options are being assessed to conduct an extended well test of the horizontal appraisal well. Rolvsnes is considered a potential tie-back development to Edvard Grieg. The well was drilled by the COSL Innovator semi-submersible drilling rig and following completion of well suspension operations the rig went off hire.
Lundin Norway is the operator of PL338C with a 50% working interest. The partners are Lime Petroleum with 30% and OMV with 20%.
The positive well results at Rolvsnes de-risks the similar on-trend prospectivity on the adjacent PL815 licence where an exploration well is being planned on the Goddo prospect in 2019. The combined Rolvsnes and Goddo prospective area is estimated to contain gross potential resources of more than 250 MMboe.
Lundin Norway is operator of PL815 with a 40% working interest. The partners are Petoro, Lime Petroleum and Concedo with 20% each.