Gazprom CEO Alexei Miller said late last week that a big section of the damaged Nord Stream 1 & 2 gas pipelines would need to be replaced.
"Experts say that in order to restore work after such a terrorist act, it is necessary to actually cut off a very large piece of pipe, at a great distance, and in fact build a new section on this section," Miller told a Russian TV station.
"And in order to restore integrity, it must be raised, this pipe. And you understand, it is one thing when the pipe is hollow, yes, and another thing when it is filled with sea water for hundreds of kilometers."
On Wednesday, Miller said repairs to the damaged Nord Stream pipelines would take more than one year.
Meanwhile, Russian President Vladimir Putin touted Turkey as the best route for redirecting gas supplies to the European Union after Nord Stream pipeline leaks. He proposed to set up a gas hub in Turkey.
Miller said that Russia will start "concrete" talks with Turkey next week on the proposals.
He said Russia could boost gas supplies to Turkey by constructing new pipelines in parallel to the currently operational TurkStream pipeline via the Black Sea, adding that the project design documentation has already been prepared.
Miller said the gas supplies via the Black Sea may reach 63 billion cubic meters (Bcm) per year. That's compared to 55 Bcm of each of Nord Stream's capabilities and 31.5 Bcm of TurkStream's transport capacity.