Spudding of Platanillo 24

23 December 2016

 Amerisur Resources Plc

Spudding of Platanillo 24

Amerisur Resources Plc ("Amerisur" or the "Company"), the oil and gas producer and explorer focused on South America, is pleased to announce that it has commenced drilling operations on well Platanillo 24 on Pad 3N in the Platanillo field in the Putumayo basin of Colombia. Platanillo 24 is the second of a minimum of two infill wells planned and will take approximately 30 days to drill and test.

The infill well is being drilled using the Serinco D-10 rig and it is planned to penetrate the N, U and T sands. The drilling and testing of the infill well is expected to cost approximately $4m.

John Wardle, CEO of Amerisur commented:

"Following the excellent results to date from our work over programme, I am delighted that drilling has commenced on Platanillo 24. I look forward to updating shareholders on our progress in due course."

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Notes to editors

Amerisur Resources is an independent full-cycle oil and gas company focused on South America, with assets in Colombia and Paraguay and production from the Platanillo field in southern Colombia. In 2016 Amerisur successfully built and is 100% owner of the strategic OBA oil transfer line into Ecuador.

In Colombia, the Company is operator and has a 100% working interest in the Platanillo block which includes the Platanillo field, which is currently producing circa 4,200 BOPD. The Company has a strong position in the Putumayo basin and has a cluster of near term activity assets around the OBA export line including the Platanillo block, Put-8, Put-12 and Coati. It has a diverse portfolio of longer term exploration assets.

This announcement contains inside information as defined in EU Regulation No. 596/2014 and is in accordance with the Company's obligations under Article 17 of that Regulation.

www.amerisurresources.com