MOSCOW, November 25. /TASS/. Shale gas production prospects in Poland and Ukraine are overestimated, Russian gas holding Gazprom said on Wednesday.

"As expected, shale gas production prospects in Poland and Ukraine turned out to be significantly overestimated and all international operators waived further participation in projects in these countries by now," Gazprom said.

The interest in shale gas is declining in current environment, Gazprom said. Many oil and gas majors announced investments cuts or fully abandoned shale projects, particularly in China, Australia and East European nations, according to Gazprom.