Amni to drill Ghana’s Tano South oil field

Amni International has revealed plans to drill on its deep-water Central Tano block, off Ghana.

Amni, which will drill the probe regardless of whether or not it secures a farm-in partner, aims to drill a probe to a target depth of 4400 metres in the fourth quarter of this year on the South Tano prospect, according to a statement.

Four proven horizons of Upper and Lower Campanian, Turonian and Albian age can be tested by one well, said a flyer from Envoi, which is marketing the asset.
The note said that 3D seismic data indicates multiple stacked Cretaceous potential will be penetrated, testing potential in-place resources of 2.27 billion barrels of oil equivalent.

An Upper Campanian target is estimated to have a mean in-place resource of 750 million boe, with 250 million boe thought to lie in a Lower Campanian play, 323 million boe in a Turonian zone and 937 million boe in an Albian play.

The 279 square kilometre Central Tano block is sandwiched between the prolific Jubilee oilfield to the east and the Tweneboa-Enyenra-Ntomme asset, to the west — both operated by Tullow Oil.

The Turonian target of the planned exploration well — which is set to cost about $45 million — is the same that Jubilee produces from.
In total, Amni has mapped 17 prospects and leads with a combined in-place resource of over 5 billion boe. Discoveries could be tied back to Tullow’s infrastructure.

Amni has a 90% stake in the asset, where water depths range form 300 metres to more than 1500 metres, and is partnered by state-owned Ghana National Petroleum Corporation.