Indico-1 Update

31 October 2018

Amerisur Resources Plc ("Amerisur" or "the Company")

Indico-1 Update

Amerisur Resources Plc, the oil and gas producer and explorer focused on South America, is pleased to announce that the rig mast has been raised at Indico-1, on the CPO-5 block ahead of spudding. The spudding of Indico-1 using rig E-2029 is expected shortly. Amerisur holds a 30% non-operated interest in the well, which is 70%-owned and operated by ONGC Videsh Ltd ("the Operator").  Photographs of the rig mast can be found on the Company's Twitter page @AmerisurResourc.

Indico-1 is targeting the same play as the successful Mariposa-1 well but is further up-dip in a larger structure. The Operator estimates a gross P50 recoverable resource at Indico-1 of 10.3 MMBO. CPO-5 is located to the south of the prolific Llanos 34 block and to the east of the Corcel fields and includes the producing Mariposa-1 well.

A further announcement will be made on completion of drilling operations.

ENDS

Enquiries:

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 two fields in 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 producing field in the Putumayo basin, and holds a 30% non-operated working interest in the CPO-5 block containing the Mariposa-1 producing field in the Llanos basin.

Amerisur has a strong position in the Putumayo basin and has a cluster of near term activity assets around the OBA export line.

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 

These assessments are made in accordance with the standard defined in the SPE/WPC Petroleum Resources Management System (2007).

Competent person: Technical information in this announcement has been reviewed by John Wardle Ph.D., the Company's Chief Executive. John Wardle has 32 years' experience in the industry, having worked for BP, Britoil, Emerald Energy and Pebercan, and is a trained drilling engineer.

Glossary