The MI-8 helicopter, carrying 15 passengers and three crew members, went down at 10:20 local time (03:20 GMT) near the town of Igarka, Sputnik news agency reported.
It crashed 2 km to the south of Igarka’s Airport.
The crash took place shortly after take-off when the helicopter’s fuel tanks were full but the cause of the incident was not immediately known.
The chopper was transporting workers to an oil well. Authorities said rescue teams and operatives were working at the crash site.