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Oil discovery in the Rolvsnes prospect, offshore Norway

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Oilfield Technology,

Lundin Petroleum AB has announced that its wholly owned subsidiary Lundin Norway AS (Lundin Norway) has completed the Rolvsnes exploration well 16/1-25 S as an oil discovery. The well is located in PL338C south of the Edvard Grieg field in the central North Sea sector of the Norwegian Continental Shelf (NCS).

The well is located on the southwestern flank of the Utsira High, approximately 6 km south of the Lundin Petroleum operated Edvard Grieg field and 3 km south of the Edvard Grieg South discovery.

Data acquisition

The well encountered a gross oil column of 30 m in porous granitic basement. Pressure data and oil type indicate that the petroleum system is in communication with the Edvard Grieg South discovery which was made by Lundin Norway in 2009. Extensive data acquisition and sampling was carried out in the reservoir including conventional coring and fluid sampling.

A production test (DST) was performed, achieving a production rate of 265 bpd through a 36/64 in. choke. Further studies will be required to incorporate all the findings and establish future planning, such as the potential drilling of an extended reach well from the Edvard Grieg platform with an associated long-term production test.

The gross contingent resource range for Rolvsnes, based on natural depletion drive, including the Edvard Grieg South discovery is estimated to be between 3 and 16 million boe. There remains significant resource upside including potential to find a more extensive fracture network and secondary recovery potential. Including this prospective upside potential the total gross resource estimate is between 10 and 46 million boe.

Exploration well 16/1-25 S is the second well drilled in PL 338C, which was carved out from PL338 in late 2014. Well 16/1-25 S was drilled to a total depth of 2096 m below mean sea level in a water depth of 106 m.

The well was drilled using the semi-submersible drilling rig Bredford Dolphin and will be permanently plugged and abandoned.

Lundin Norway is the operator of PL338C with 50 % working interest. The partners are Lime Petroleum Norway with a 30% working interest and OMV (Norge) AS with 20% working interest.

Adapted from a press release by Louise Mulhall

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