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The West Navigator drill ship. Image courtesy of Ships and Harbors.

Centrica Resources discovered two gas pay zones at its offshore Norway wildcat well 6707/10-3 S Monday.

The primary and secondary exploration targets proved petroleum in the Kvitnos and Lysing formations.

A gas column measuring about 40 feet with “good reservoir properties” was encountered in the Kvitnos formation.

The entire reservoir zone, including the water zone, has a gross thickness of 656 feet.

Reservoir rocks were also encountered at the secondary exploration target in the Lysing formation, with a total thickness of 82 feet.

Preliminary estimates place reserves at between two and eight billion standard cubic meters of recoverable gas.

Well 6707/10-3 S was drilled to a vertical depth of 13,989 feet in 4,662 feet of water, and was terminated in the Lange formation in the Lower Cretaceous.

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

Well 6707/10-3 S was drilled by the West Navigator drill ship and will be permanently plugged and abandoned.

The licensees are assessing the well results.

Well 6707/10-3 S is the first exploration well in the Centrica operated production licence 528 B.

UK-based Centrica operates the license with a 40 percent interest.

Norway’s Statoil holds a 35 percent stake, Norway-based Atlantic Petroleum Norge holds a 15 percent stake and Norway-based Rocksource Exploration holds a 10 percent stake.