Doriemus Regulatory News (DOR)

22 October 2013 Doriemus Plc ("Doriemus" or the "Company") Lidsey Oilfield Update - Work-over and Recompletion Doriemus Plc (AIM: DOR) is pleased to announce that, as set out in the farm-inannouncement on 18 October 2013, the operators of the Lidsey Oilfield("Lidsey") in West Sussex have confirmed that they plan to conduct a work-overand, more significantly, a recompletion on the producing Lidsey-1 Well over thenext few weeks. The Lidsey-1 Well is currently producing 25 bopd of 38 API oil. As previously announced, Doriemus has agreed with Angus Energy Weald Basin No.3 Limited ("Angus Energy"), a UK based oil production company, to farm-in to aparticipating 10 per cent. interest in Lidsey. Doriemus has a 60 day firstright of refusal period to negotiate increasing its participating interest to25 per cent. A contract work-over rig has now been secured to conduct a full well cleanoutand scraper run to the total depth of the well and to perforate a new 10 footsection of the Great Oolite Reservoir above the existing 2 feet of perforationsresponsible for the current 25 bopd oil production. It is expected to arrive inthe next few weeks. Donald Strang, the Company's Chairman, commented: "The Company believes that there is potential for oil production at Lidsey toincrease significantly from the current 25 bopd after the planned wellintervention work is complete, particularly after the new perforations in theGreater Oolite formation." The Lidsey Oilfield Lidsey is held under granted United Kingdom Production Licence PL241. CarlessExploration discovered oil on Lidsey in 1987 when an exploration wellsuccessfully flowed oil. Lidsey has one vertical producing well in theJurassic, Great Oolite reservoir. The Lidsey surface facilities are fullypermitted and operational with onsite oil storage of 2,000 barrels. In 2002, an independent Schlumberger report on Lidsey concluded the most like1P reserves of the field are 230 mstb or 5.75 per cent. of the STOIIP and withan additional well the 2P reserve would be 600 mstb or 6.5 per cent. of theSTOIIP. For further information please contact: Doriemus plcDonald Strang +44 (0) 207 440 0640Hamish Harris Sanlam Securities UK LimitedSimon Clements/Virginia Bull +44 (0) 207 628 2200