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Statoil in minor find near Heidrun

Written by  Thursday, 24 August 2017 08:38

Statoil has struck a minor gas find at a wildcat well near the Heidrun field in the Norwegian Sea where it could become a possible tieback, according to the Norwegian Petroleum Directorate (NPD).

Map of 6507/8-9, from the NPD.

The NPD says that operator Statoil is about to complete the drilling of wildcat well 6507/8-9, where the Norwegian giant encountered a gas column of a total of about 80m in the Åre formation, and in the Båt Group, of which 35m were in sandstone with good reservoir quality.

The well was drilled with the Deepsea Bergen about 9km northeast of the Heidrun field in the Norwegian Sea and about 270km southwest of Sandnessjøen, in production license (PL) 124.

Well 6507/8-9, at 358m water depth, was drilled to a vertical depth of 2352m below the sea surface, and was terminated in the Åre formation in the Lower Jurassic. The well will now be permanently plugged and abandoned.

The primary exploration target for the well was to prove petroleum in Middle and/or Lower Jurassic reservoir rocks (the Fangst and/or Båt Group). The secondary exploration target was to prove petroleum in Lower Jurassic reservoir rocks (the Båt Group).

The gas/water contact was proven 2185m below the sea surface. In the secondary exploration target, the well encountered several water-filled sandstone layers with good reservoir quality in lower parts of the Åre formation in the Båt Group.

The preliminary estimation of the size of the discovery is between 0.7-1.2 Bcm of recoverable gas.

The NPD says the partners in PL 124 will consider a tie-in of the discovery to existing infrastructure on the Heidrun field.

The well was not formation tested, but extensive data acquisition and sampling have been carried out.

The wildcat marks the eighth exploration well in PL 124, which was awarded in the 10th licensing round in 1986.

Statoil is the operator of PL 124 with a 35% stake. Partners include ConocoPhillips (27.9%), Petoro (27.1%) and Eni (10%).

The Deepsea Bergen drilling facility will now proceed to drill Wellesley Petroleum’s wildcat well 33/9-22 S, targeting the Goanna prospect in PL 881 in the North Sea.

Read more:

Statoil to drill in PL 124 with Deepsea Bergen

Wellesley to drill Goanna with Deepsea Bergen

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