Tullow Oil Regulatory News (TLW)

News Release

Cara discovery - offshore Norway

16 September 2016 - Tullow Oil plc is pleased to announce that drilling and testing of the Cara prospect in licence 636 in the Norwegian North Sea has been completed. The well was drilled to a total depth of 2,702 metres in 349 metres of water, 6 kilometres northeast of the Gjøa field.

The well encountered a gas column of 51 metres and an oil column of 60 metres with the operator estimating between 25 million barrels of oil equivalent (boe) and 70 million boe have been discovered. Extensive data acquisition was undertaken including wireline logging and three successful core runs and a successful production test. The partners will now evaluate the possibility of linking this discovery to existing infrastructure at the nearby Gjøa field.

ENGIE E&P Norge AS is the operator of licence 636 with a 30% stake. The other partners are Tullow Oil Norge AS (20%), Idemitsu Petroleum Norge (30%) and Wellesley Petroleum AS (20%).

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Notes to Editors

Tullow Oil plc

Tullow is a leading independent oil & gas, exploration and production group, quoted on the London, Irish and Ghanaian stock exchanges (symbol: TLW). The Group has interests in over 120 exploration and production licences across 21 countries which are managed as three business delivery teams: West Africa, East Africa and New Ventures.