Eastern Europe focused oil and gas explorer and producer Aurelian said its activities in Romania are proceeding according to plan while in Bulgaria it expects to drill two wells in the second half of the year.The company said the initial fracture simulation of the 1650 sand in its Voitinel-1 well in the Brodina Block in Romania has been successful, completing the first part of a two stage appraisal process.The well flow tested at a stabilised rate of 2.5m standard cubic feet per day (scf/d ) after three days, an improvement of two-thirds over the October 2009 rate.The fracture treatment has also significantly increased the connected volumes/effective drainage area of the well and it is now believed that wells on the Voitinel structure have the potential to produce up to 6 bilion cubic feet of gas at an average rate of 2.5 million scf/d for the first year. Aurelian has a 33.75% interest in Voitinel, SNGN Romgaz 37.50% and Europa Oil & Gas 28.75%.In Bulgaria, Aurelian said that the operator of the B1-Golitza licence has signed an agreement with Weatherford Drilling to secure the use of a drilling unit for use on the two well drilling programme scheduled for the second half of 2010. Aurelian has a 30% stake in the B1-Golitza block.