Regal Petroleum PLC, London, is redeveloping Mekhediviska-Golotvshinska and Svyrydivske gas-condensate fields in northeast Ukraine’s Dnieper-Donets basin 125 miles northeast of Kiev.
By OGJ editors
HOUSTON, Jan. 13 – Regal Petroleum PLC, London, is redeveloping Mekhediviska-Golotvshinska and Svyrydivske gas-condensate fields in northeast Ukraine’s Dnieper-Donets basin 125 miles northeast of Kiev.
Early January 2010 production was below expectations at 9.6 MMcfd of gas and 481 b/d of condensate because of shortfalls from the SV-58 and MEX-106 wells.
SV-58 had flowed 6 MMcfd of gas on a 10-mm choke from the Visean B-sand on initial tests through conventional perforations at 5,200 m, but a very high condensate-to-gas ratio from one interval inhibited stable gas flow and numerous perforated intervals weren’t contributing.
Company personnel designed a customized jet perforation technique that returned flow to 1.9 MMcfd and 66 b/d after being implemented in less than 10% of the target reservoir. The rest of the target reservoir is to be reperforated in February, and the company and an international service firm are studying whether other field wells might benefit from jet perforating.
MEX-106’s production is stable at 2.6 MMcfd and 75 b/d from B-sands, and recovery of a fish set for February will enable tests of deeper Tournasian and Devonian sands. Regal is drilling the SV-61 and SV-66 wells.