Lundin Petroleum subsidiary Lundin Norway has made a final investment decision to carry out an extended well test (EWT) on the Rolvsnes discovery offshore Norway, according to a news release.

Rolvsnes is a weathered and fractured basement discovery located on the southern side of the Edvard Grieg Field in the North Sea. Lundin said this reservoir has not been previously developed in Norway, though it has been elsewhere in the world. The test is being conducted to learn more about potential long-term reservoir performance.

“The Rolvsnes EWT will be conducted through a 3-km subsea tieback of the existing Rolvsnes horizontal well to the Edvard Grieg platform, with first oil scheduled in the second quarter 2021,” Lundin said April 4 in the release. “The project will be implemented together with the Solveig project to take advantage of contracting and implementation synergies.”

The Solveig subsea project, for which partners Lundin, Wintershall Norge and OMV Norge submitted an $810 million development plan earlier this month, is also located on the Utsira High.

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In addition, Lundin said it will drill an exploration well on the nearby Goddo prospect to further assess the potential of the basement trend on the Utsira High. Combined, Goddo and Rolvsnes prospective area is believed to hold gross potential resources of more than an estimated 250 million barrels of oil equivalent.

“The sanction of an EWT on fractured and weathered basement is a first for the Norwegian Continental Shelf and a significant step forward for Lundin Petroleum as we look to unlock the significant resource potential, sitting right in between our Edvard Grieg platform and the giant Johan Sverdrup Field,” Lundin Petroleum COO Nick Walker said in the release. “Coordinating this EWT with the Solveig tie-back development will realise cost synergies and is another important step in extending the plateau production at the Greater Edvard Grieg Area.”