Core Barrel & Overshot Assembly

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Core barrel & overshot assembly are the most essential drilling tool for exploration, Geotec provides all standard industry formats in order to compatible with other corresponding systems.
•Offer single & Double and Triple Tube Core Barrels
•Appropriate for shallow and deep downhole drilling
•Suggest Triple Tube Core Barrel for drilling coal, clay bearing or highly fractured rock formation.
•Overshot also available to carry core barrels back to the surface ground.
•Large stock available for standard hole size such as BWL/NWL/HWL/PWL/N/ H/ P sizes.

Size Available


Core Barrel & Overshot Available Series

Wireline Series

BWL, NWL, NWL-2, NWL-3, HWL, HWL-3, PWL, PWL-3 (Surface & Underground)

BTW, NTW, HTW (Surface & Underground)

Conventional Series

LTK48, LTK60, T2 76, T2 86, T2 101

Chinese Series





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