PROCEDE DE VIDAGE D'UN PUITS DE PETROLE ET SYSTEME POUR SA MISE EN OEUVRE.

摘要

The invention relates to a method for the controlled (P) emptying of an oil well (W) comprising a submerged pump which is driven on the surface by a motor (M) connected to the pump by a driving rod (T), said method comprising the step consisting of: in the event of the interruption of the driving of the pump by the motor and the driving rod being rotated in the reverse direction under the effect especially of the pressure of the fluid column in the well and the potential energy of accumulated torsion in the driving rod, decelerating the driving rod by exerting a braking torque by means of a decelerating system (20) with eddy currents.