27 seismic crews operate within the Krasnoyarsk Territory and Evenkia, Sakha Republic (Yakutia), and Irkutsk Region:
8 crews — Khantymansiyskgeofizika;
1 crew — Central Geophysical Expedition;
7 crews — Boguchan Geophysical Expedition;
6 crews — Ilimpey Geophysical Expedition;
5 crews — Sibneftygeofizika.