South America-focused Amerisur Resources said the Platanillo-27, the 21st well of the Platanillo drilling campaign, has been spudded with rig Serinco D10 on Pad 2N.
It said drilling and logging were expected to take approximately 30 days to final prognosed TD of 9,618 ft.
Platanillo-27 is an appraisal well designed to access the northern part of the accumulation discovered at Pad 2N by well Platanillo-22.
Amerisur also said that the operator had informed the company that the inspection visit to the Mariposa-1 location by Agencia Nacional de Hidrocarburos was completed on 10 Nov.
It said the long term test of Mariposa-1 was expected to begin shortly and a further announcement would be made in due course.