Russia does not have its own LNG technology.
"We've looked at the efficiency of both technologies and they basically have the same indicators in terms of workability. The rest is a question of negotiation," Markelov said.
Royal Dutch Shell quit Gazprom's liquefied natural gas project near the Baltic Sea port of Ust-Luga last month after the Russian company moved to integrate its Baltic LNG project and gas processing plants.
Gazprom has already started designing the Baltic LNG complex, Markelov said.