Aminex is acquiring the additional 15% interest by undertaking to pay 20% of the costs of drilling the Nyuni-2 well, due to be spudded in April this year.

The deal, which has been approved by Tanzania’s ministry of energy and minerals, gives the Aminex 65% of the Nyuni PSA.

Its partners are the RAK Gas Commission with 25% while Key and Bounty Oil& Gas each hold 5%.

The agreement, which was subject only to the government approval, was announced on 4 February 2011.