| Variants | WIRELINE CORE BARRELS & SAFETY OVERSHOTS: Double tube system, Surface AWL, BWL, NWL, NWL2", HWL, PWLWIRELINE CORE BARRELS & SAFETY OVERSHOTS: Double tube system, Underground (pump-out system) BWL-U, NWL-U, HWL-UWIRELINE CORE BARRELS & SAFETY OVERSHOTS: Triple Tube System (upto 6m long core) NWL-3, HWL-3, PWL-3Conventional Core Barrels: Double tube system, LTK Series 48, 60Conventional Core Barrels: Double tube system, T2 Series 46, 56, 66, 76, 86, 101Conventional Core Barrels: Double tube system, T6 Series 76, 86, 101, 116, 131, 146Conventional Core Barrels: Triple tube system NMLC, HMLC, 4C, 8C |