Kelly



Kelly is designed to transfer the rotor torque to the drill string when drilling wells.

 

Kelly can be:

– Square section;

– Hexagonal section.

 

BASIC SIZES OF KELLY (SQUARE SECTION)

Distance between faces, inch Total length, ft
2 1/2 37
3 37
3 1/2 37
4 1/4 37

 

BASIC SIZES OF KELLY (HEXAGONAL SECTION)

Distance between faces, inch Total length, ft
3 37
3 1/2 37

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