Naftogaz of Ukraine (Ukraine)
UkrGasVydobuvannya JSC (Ukraine)
UkrBurGas Drilling Division (Ukraine)
UKRTRANSGAZ PJSC (Ukraine)
Naukanaftogaz SE (Ukraine)
Ukrnafta PJSC (Ukraine)
State Service for Geology and Subsoil of Ukraine (Ukraine)
Nadra Ukrayny NJSC (Ukraine)
Zahidukrgeologiya SE (Ukraine)
Ukrgeofizika SGE (Ukraine)
Kirovgeologiya SE (Ukraine)
Ukrainian Geological Company SE (Ukraine)
Shell Ukraine Exploration and Production (Netherlands, Great Britain)
Halliburton (USA)
Discovery Drilling Equipment (Great Britain, Ukraine)
RAG AG (Austria)
DGE Group (Denmark)
FairfieldNodal (USA)
ION GX Technology (USA)
Paradigm (Israel)
LMKR GeoGraphix (Canada)
Marathon (USA)
Vanco Exploration Company (USA)
Tutkovsky Well Services Ltd. (Ukraine)
Tutkovsky PJSC (Ukraine)
Arab Energy Alliance UA LLC (Ukraine)
Poltava Petroleum Company JV (Ukraine)
Naftogazvydobuvannya JSC (Ukraine)