NMLC Core barrel
NMLC de barril de núcleo de fio
NMLC HMLC 4C Core Barrels
NMLC HMLC 4C Coring Barrel
NMLC HMLC Core Barrel
NMLC HMLC Coring Barrel
no fundo do poço SD6
NQ de bits de núcleo de diamante impregnado
NQ Surface Set Diamond Core Bit