Oleska shale gas deposit

The Oleska shale gas deposit is an unconventional gas area in Lviv, Ivano-Frankivsk and Ternopil oblasts in Ukraine. It will begin production in 2017 and will produce natural gas and condensates. The total proven reserves of the Olesska gas field are around 53 e12cuft(1500 km3) and production is slated to be around 1 e9cuft/d. The total exploration investment is expected to be about US$350 million.

In December 2014, Chevron terminated the agreement with the Government of Ukraine for a 50 interest in and operatorship of Oleska Shale Block.