Swedish oil and gas exploration and production company Lundin Petroleum has successfully completed drilling of the Johan Sverdrup appraisal wells 16/3-8 S and 16/3-8 S T2 in the eastern part of PL501.

Appraisal well 16/3-8 S, which was drilled approximately 4km south-east of the discovery well 16/2-6 and 3km west of appraisal well 16/3-4, is located on the Avaldsnes High, in the eastern part of the Johan Sverdrup discovery.

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The well was drilled in order to investigate the late Jurassic Draupne sandstone reservoir, as well as the Permian Zechstein carbonates’ thickness and quality.

According to the company, the well encountered an oil-filled reservoir comprising 13m of late Jurassic Draupne sandstone with good reservoir quality and 67m of Zechstein carbonates with variable, tight reservoir quality with oil shows.

"Semi-submersible drilling rig Bredford Dolphin was used to drill the well."

During the interval, a production test (DST) was performed and flowed at a rate of 4,900bpd of oil through a 52in/64in choke.

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Based on the DST, it was revealed that some of the reservoir quality is found in the central area of the Avaldsnes High with a high permeabilty of 65 Darcy and no flow restrictions within a 3km-4km radius of investigation.

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The well was drilled to a total vertical depth of 2,010.5m below MSL into sediments of Permian age, while 16/3-8 S T2, a technical side-track, was drilled to investigate petrophysical properties in the reservoir.

Lundin Petroleum president and CEO Ashley Heppenstall said: "The test results from this well are as good as anything previously encountered on the Norwegian Continental Shelf."

Semi-submersible drilling rig Bredford Dolphin was used to drill the well.

Lundin Norway operates PL501 with a 40% interest, and the remaining partners include Statoil Petroleum (40%) and Maersk Oil Norway (20%).

Nri energy