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Image courtesy of Lundin Petroleum.

Lundin Norway boosted its reserve estimate by as much as 8 million standard cubic meters at the offshore Edvard Grieg oil field on Tuesday after completing the drilling of appraisal well 16/1-23 S.

Appraisal well 16/1-23 S was drilled in production license 338 in the North Sea, about 1.5 miles southeast of the Edvard Grieg platform.

Prior to well 16/1-23 S being drilled, Lundin’s resource estimate for the field was 29.8 million standard cubic meters of recoverable oil.

Preliminary calculations show that the results from the appraisal well may boost the company’s estimate by between 1 to 8 million standard cubic meters recoverable oil in that section of the Edvard Grieg field.

“Further work is expected to reduce the uncertainty of this estimate,” the Norwegian Petroleum Directorate said.

Well 16/1-23 S encountered a total oil column of 219 feet in conglomeration sandstone with “moderate to good reservoir quality.”

The oil/water contact was encountered 6,343 feet below the sea surface, about 18 feet shallower than the contact in the rest of the field.

Extensive data acquisition and sampling have been conducted.

A total of five small-scale formation tests have been carried out in the oil and water zone, with test production of one-meter intervals through the drilling string.

The tests in the oil zone showed “good flow properties,” with a moderate flow rate in the water zone, the NPD said.

This is the tenth exploration well in production license 338 and the seventh exploration well on the Edvard Grieg field.

Appraisal well 16/1-23 S was drilled to a measured depth of 6,988 feet and vertical depth of 6,702 feet below the sea surface and terminated in granite bedrock.

Water depth at the site is 354 feet.

The well will be permanently plugged and abandoned.

Appraisal well 16/1-23 S was drilled by the drilling facility Rowan Viking.

The drilling facility will continue to drill production and injection wells on the Edvard Grieg field.

Sweden-based Lundin operates production license 338 with a 50 percent stake.

OMV (Norge) holds a 20 percent stake in the license, Norway’s Statoil holds a 15 percent stake and Wintershall Norge holds a 15 percent stake.