Lundin upgrades resources at Rolvsnes in the North Sea
Lundin Norway has 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 semisubmersibleCOSLInnovatordrilled the appraisal well, which is about 3 km (1.9 mi) 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 producing in the northern area of the Edvard Grieg field.
The well was drilled horizontally in the reservoir interval and encountered 2,500 m (8,202 ft) of fractured and weathered basement. Data acquisition and sampling followed, including a 10-day production test with production logging and bottomhole fluid sampling. A maximum constrained production rate of 7,000 b/d of oil was achieved, while the five-day main flow period was held at a production rate of 4,200 b/d.
The test results show good reservoir productivity and connection to a significant oil volume that benefits from aquifer pressure support, which are positive factors toward demonstrating commercial recovery at Rolvsnes.
Based on these results, Lundin has increased its resource range estimate to between 14 and 78 MMboe from the previous range of between 3 and 16 MMboe.
The long-term production behavior from this reservoir type needs to be understood better, Lundin said, and options are being assessed to conduct an extended well test of the horizontal appraisal well. Rolvsnes is considered a potential tieback development to Edvard Grieg.
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 license 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.
Alex Schneiter, president and CEO of Lundin Petroleum said: “It is not often that a company is able to de-risk a new play concept in a jurisdiction like Norway, and with the results at Rolvsnes, I am encouraged by the significant potential of this weathered and fractured basement play on the Utsira High.
“The key element was to prove commercial production rates and significant connected oil volumes, and I am pleased to note that we have exceeded our expectations on both. We will now focus on understanding the full potential of the play and are planning for an extended well test and further exploration drilling. This result not only validates our organic growth strategy, but also highlights the continued upside in and around our Edvard Grieg facility.”