Wintershall has made a minor oil discovery in the North Sea.
The German operator is in the process of completing the drilling of wildcat well 35/11-18 and appraisal well 35/11-18 A four kilometres west of the Vega Sør field.
Well 35/11-18 proved light oil in the Tarbert and Oseberg formation, with columns of eleven and three metres, respectively. In the secondary exploration target, the well encountered an eight-metre hydrocarbon column of good to poor reservoir quality.
Appraisal well 35/11-18 A proved gas and oil in two Upper Jurassic (the Heather formation) sandstones with net thicknesses of 33 and 24 metres, respectively, with poor to good reservoir quality. The well encountered oil throughout the Brent group, which is 270 metres, with moderate to good reservoir quality. The well also encountered a 46-metre column of light oil in the Lower Jurassic (the Cook formation).
Preliminary estimates place the size of the discovery between 1 and 3 million Sm3 of recoverable oil.
Extensive data collection and sampling have been carried out.
The wells are the second and third exploration wells in production licence 248 and have now been permanently plugged and abandoned. The partners in PL 248 will now evaluate the results.
Wells 35/11-18 & 18 A were drilled by the Borgland Dolphin drilling rig, which will now drill appraisal well 25/10-14 in the North Sea in production licence 571, where Suncor is the operator.
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