KIEV, June 7 - Ukrgazvydobuvannia, a subsidiary of Naftogaz Ukrainy, increased gas extraction by 0.4% or by 22 million cubic meters in January-May 2011 compared to the same period in 2010, to 6.278 billion cubic meters (bcm), the company reported.

The company said that in May 2011 the company increased gas extraction by 0.6% or by eight million cubic meters compared to May 2010, to 1.26 bcm.