Zephyr Energy PLC (AIM:ZPHR, OTCQB:ZPHRF) told investors it had completed drilling operations on the State 36-2R LNW-CC well at its flagship project in the Paradox Basin, Utah.
The drill rig is now being removed from the site and production testing equipment will be mobilised shortly.
Testing is expected to commence within two weeks and will take less than ten days to complete.
"I am delighted that drilling operations have been completed safely and successfully,” chief executive Colin Harrington said in a statement.
“We can now look forward to commencing the highly anticipated production test over the course of the next fortnight."