Amerisur Resources Plc said Oct. 3 that the T sand interval at the Pintadillo-1 discovery has flow tested under natural flow at 590 barrels per day of oil of 30.4 degrees API oil under choke of 18/64-inch with strong wellhead pressure of 110 psi.

The water cut is less than 1% and is decreasing. An interval of 9 ft (2.7 m) was perforated within the 15 ft (4.5 m) of net pay identified in the T sand. Oil produced is being evacuated through the OBA pipeline with a consequent increase in the company’s production.

In line with company standard practice the well will be observed at these stable parameters for at least a further three days, after which a downhole pump may be run to provide some lift to the well to optimize flow parameters.

The company plans to re-map the T and U sand targets across this part of block to evaluate the size of the discovery and will make a decision as to future drilling options from the Pintadillo pad thereafter.

Currently no T-sand or U-sand reserves are attributed to this part of the block. Once a production history is established management expects reserves to be attributed.

“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. The strong natural flow from the well, together with a different oil-water contact indicates a separate structure compared to the T-sand production in the southern part of the block, which further diversifies our production base,” John Wardle, CEO of Amerisur, said.