14 May 2025

This announcement contains inside information

Empyrean Energy PLC / Index: AIM / Epic: EME / Sector: Oil & Gas

Empyrean Energy PLC ('Empyrean' or 'the Company')

Wilson River -1 DST operations results

Empyrean Energy plc ("Empyrean" or the "Company"), the oil and gas development company with interests in Australia, Indonesia, and the United States, provides the following update on the Wilson River-1 well:

A Drill Stem Test (DST) has been completed on the Wilson River-1 well. A fluid sample was successfully recovered and sent for further analysis.

The final well testing report has now been received and confirms the recovery of formation water from the Murta Formation in the Wilson River-1 well. As a result, a decision has been made to plug and abandon the well and the rig has been released.

Empyrean CEO, Tom Kelly, commented:

"The drilling and testing operations at Wilson River-1 were completed safely and efficiently. The outcome is disappointing, as no moveable hydrocarbons were indicated by the drill stem test despite the well having potential oil pay indicated by the quad combo logging run. The conclusion is that there has been inadequate buildup of hydrocarbons through effective migration within the trap to displace enough formation water."

The information contained in this announcement has been reviewed by Empyrean's Technical director, Gaz Bisht, who has over 35 years' experience as a hydrocarbon geologist and geoscientist.

For further information please visit www.empyreanenergy.com or contact the following: