AMER.L Share News (AMER)

(Sharecast News) - Amerisur told investors on Wednesday that the T sand interval at its Pintadillo-1 discovery had flow-tested under natural flow at 590 barrels of oil per day.Running at 30.4 degrees API oil under a choke of 18/64" and a strong wellhead pressure of 110psi, Amerisur said it was excited by the asset after it successfully perforated an interval of nine feet within the 15 feet of net pay identified in the T sand.Oil produced has been evacuated through Amerisur's OBA pipeline, increasing the company's production for the month in the process.The South American-focused oil producer and explorer will now observe the well at its current parameters "for at least a further three days", after which it may opt to run a downhole pump to provide some lift to the well and optimise flow parameters.Amerisur also plans to re-map the T and U sand targets across the Pintadillo-1 block in order to evaluate the size of its discovery.Chief executive John Wardle, said: "This is an exciting and very positive result from Pintadillo-1, ahead of what we had expected. Indeed, at current choked production levels, the well will pay back in under a year.""We will now work to evaluate the size of the discovery while continuing to produce the well."As of 1045 BST, Amerisur shares had dug up 13.24% to 13p.