Amerisur Resources today said tests on its South American acreage had shown positive signs for future production.
The 7” production liner was successfully run and cemented in Mariposa-1, the exploration well drilled in the north-western part of the CPO-5 block in Colombia.
An interval of 12 feet at the top of the 120 feet of net pay logged in the L3 sandstone was perforated in order to perform a short-term test with a drill-stem-test temporary string.
The natural controlled flow rate recorded was approximately 4,601 barrels of oil per day of 40.8 degree API oil with a water cut of 0.35% and 348psi flowing wellhead pressure over a 40/64″ choke.
Chief executive John Wardle said: “This is a very promising initial short term test of Mariposa-1, the high wellhead pressure during the final flow period indicates strong further production potential. The Company is now considering the results of the test together with our partner to confirm plans for a potential long term test, the potential for further appraisal wells on this structure and the potential to declare the well a discovery under the terms of the CPO-5 Exploration and Production Contract held with the Agencia Nacional de Hidrocarburos.”
The well has now been closed in pending interpretation of the short term test data.