MOSCOW, September 29. /TASS/. Gazprom received a survey work permit for two lines of the offshore segment of the Turkish Stream natural gas pipeline in Turkey’s territorial waters, the Russian gas holding said on Thursday.

"We should note structural and operative interaction with the Turkish partners. Activities under the Turkish Stream project are implemented at an excellent pace," Chief Executive Officer of Gazprom Alexei Miller said in a comment.

Gazprom reported in mid-September it had received the first permit from Turkish authorities for construction of the offshore segment of the Turkish Stream pipeline.

The Turkish Stream pipeline was announced by the Russian authorities in December 2014 as a replacement for the South Stream pipeline. It was planned that the marine section of Turkish Stream would comprise four lines with the capacity of 15.75 bln cubic meters each. The pipeline is to run 660 km in the old South Stream corridor and 250 km in the new corridor in the direction of the European part of Turkey. The project’s total cost was estimated at 11.4 bln euro, with the cost of the first line amounting to 4.3 bln euro.