Exillon Energy plc is engaged in the exploration, development and production of oil. The Company's principal activity is oil production with operations located in two regions of northern Russia: Exillon TP in Timan-Pechora and Exillon WS in West Siberia. Its segments include Exillon TP and Exillon WS. Exillon TP segment is engaged in an upstream business based in the Timan-Pechora basin in the Komi Republic in the Russian Federation. The Exillon WS segment is engaged in an upstream business based in Western Siberia in the Russian Federation. The Company's production facilities are based in the Republic of Komi and the Khanty-Mansiysk Region of the Russian Federation. Its subsidiaries include Silo Holdings LLC, which is engaged in oil trading activities; Ucatex Oil LLC, Kayumneft JSC and Nem Oil CJSC, which are engaged in subsoil user activities, and Komi Resources CJSC, Claybrook Limited and Actionbrook Limited, which are engaged in the administration activities.