decoupling device for drilling column, and drilling system comprising such a device for decoupling.

摘要

Decoupling device (10) for drilling column comprising, in a longitudinal direction (x), a first structure (11) intended to be fixed to a tube of a drilling column, a second structure (12) designed to support a cutting tool of the drilling and movable in translation with respect to the first structure, and an assembly device between the first structure and the second structure. The assembly of the pusher is adapted to exert a thrust force on the second structure (12) for moving the second structure of the first structure, the thrust force is constant for any position of the second structure with respect to the first structure.