This was made known at a press event ahead of next week's commencement of production by the Project Director of the TEN field, Mr Terry Hughes.

“We only have small numbers of the wells tested, but we make predictions. So our prediction this year is for 23,000 barrels of oil per day on average by the close of the year,” he said.

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“We make predictions. I will be a little bit cautious to give you specific data since we forecast. Some of the wells will come on as good, some will be better, and some will be slightly less, that is Mother Nature,” he added.

The $4.8 billion project is expected to produce oil for at least 25 years, which will mean about 300 million barrels of oil is expected, Mr Hughes said.

“Everybody is always interested in how the field is going to ramp up in the few days and months. Let me just remind you that the field will last 25 years,” he added.

The Tweneboa, Enyenra and Ntomme (TEN) project showcase is a joint-venture partnership between Tullow, Kosmos Energy, Anadarko Petroleum, Petro SA and the  GNPC.

They are located in the Deepwater Tano licence which covers an area of more than 800 sq km, and lies around 20km west of Tullow’s Jubilee field.