(Sharecast News) - Amerisur Resources has spudded its Pintadillo-1 well in Colombia and has begun seismic acquisition at the Coendu prospect.The South America-focused oil and gas firm new well is targeting the N Sands anomaly to the north of the Platanillo field, with drilling running ahead of schedule at 5,000 feet measured depth.Elsewhere, Amerisur's 2D seismic acquisition at the Coendu prospect, where it has initiated the processes required for the preparation of the Drilling Environmental Licence, has been slated to wrap before the end of the month and will be followed by data processing and interpretation.Amerisur's chief executive John Wardle said: "After some delays, we look forward to a busy period of seismic and exploration drilling activity in the weeks and months ahead, with a focus on the OBA cluster acreage we have built up at low cost in the oil downturn."The AIM-listed firm told investors on Friday that it had completed the construction and installation works at the Chiritza Re-Pumping Station in Ecuador, which, when operational, will have a minimum throughput capacity of 9,000 barrels of oil per day.Amerisur turned in an unaudited production of 152,721 barrels of oil from its Platanillo and the Mariposa-1 operations in August. Average daily production stood at 4,927 bopd and peak daily production came in at 5,295 bopd."Current production has stabilised and at the right time we may increase production rates at Platanillo-22 whilst preserving the long-term integrity of the well," said Wardle.As of 1045 BST, Amerisur shares had jumped 4.93% to 14.90p.