Tullow Fails to Find Hydrocarbons at Gotama Prospect in PL 550 Off Norway

Tullow Oil plc (Tullow) reported Tuesday that exploration well 31/2-21S which was targeting the Gotama prospect, offshore Norway, did not encounter reservoir quality sandstones in the Upper Jurassic main target. The well encountered reservoir quality sandstones in the secondary targets but these intervals are water wet.

The 31/2-21S wildcat was the first exploration well in the 550 license and was targeting sandstone reservoirs in the Upper Jurassic Draupne Formation as the main target and additional sandstone targets in the Middle Jurassic Sognefjord Formation and Brent Group.

The well was drilled by the Borgland Dolphin (mid-water semisub) and is located approximately 7.46 miles (12 kilometers) northwest of the Troll C Platform and 74.6 miles (120 kilometers) northwest of Bergen. The well was drilled into the Lower Jurassic Cook Formation to a total depth of 10,554 feet (3,217 meters) in water depths of 1,141 feet (meters) and will now be plugged and abandoned.

Tullow operates the 550 license with 80 percent equity and is partnered by Det Norske (10 percent) and VNG Norge AS (10 percent).


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