LOGGING SERVICES

Udmurtneftegeofizika LLC

EXPLORATION AND DEVELOPMENT SERVICES

GEOTECH Seismic Services PJSC

INTEGRATED DRILLING SERVICES

Halliburton International Inc

DRILLING CONTRACTOR

VPT-Neftemash LLC

OILFIELD SERVICES

Schlumberger

OILFIELD SERVICES

Baker Hughes

OILFIELD SERVICES

National Oilwell Varco

OILFIELD SERVICES

Eastern Siberian Engineering Company LLC

OILFIELD SERVICES

Scientific Drilling

ESTIMATION OF OIL AND GAS RESERVES

DeGolyer&McNaughton

ESTIMATION OF OIL AND GAS RESERVES

The Center of Scientific Research, Design, Fossil Raw Materials Geology (CNIP GIS LLC)

PRIMARY BANK

ROSBANK PJSC

CONCEPTUAL DESIGN

ThyssenKrupp AG

DESIGN & ENGINEERING

Giprovostokneft JSC

ENGINEERING SURVEYS

YakutStroyIzyskaniya LLC

ENGINEERING SURVEYS

NPO VKTB LLC

ROAD DESIGN

TEKPRO LLC

AUDITORS (RAS & IFRS)

Ernst & Young Ltd

LEGAL ADVISORS

Intra Legem Law Firm

LEGAL ADVISORS

Allen & Overy Legal Services

INSURANCE PARTNERS

SOGAZ JSC

AUDITORS (RAS & IFRS)

Willis insurance broker

ENVIRONMENTAL CONSULTANTS

Institute for Applied Ecology of the North