Drilling Update

Exillon Energy plc

Drilling Update

2 November 2011

2 November 2011 - Exillon Energy plc ("Exillon Energy", the "Company" or the "Group") (EXI.LN), a British listed independent oil producer with assets in two oil-rich regions of Russia, Timan-Pechora ("Exillon TP") and West Siberia ("Exillon WS"), is pleased to announce that well EWS I - 18 drilled on the eastern part of EWS I field was successfully tested.

EWS I - 18

The EWS I - 18 well, which was spudded on 17 September 2011 was drilled in 16 days on the eastern part of the EWS I field.

The well flowed water-free oil naturally to the surface with a flow rate of 596 bbl/day on an 8 mm choke and 818 bbl/day on a 10 mm choke. The well encountered the Jurassic P reservoir at 1,807 meters, confirming 17.1 meters of effective net oil pay within the Jurassic.

The well was drilled directionally 1.3 km to the south from the existing well pad 4. On completion of testing the well will be connected up to existing production facilities.

The drilling and net pay results for the EWS I - 18 well were previously announced on October 26 2011.

Media contact:

Tom Blackwell

[email protected]  +44 207 920 2330