Patent ID: 8136597

Claim:
A method for extinction of an underwater well for extracting a hydrocarbon under uncontrolled fluid discharge conditions, the method comprising: a) assembling, in correspondence with a lower end portion of a killing string of pipes for the extinction, a constraint group for a rigid connection between a plurality of remote-operated underwater vehicles and said killing string; b) revealing a position of a flow of fluids and positioning said killing string substantially in correspondence with said flow; c) lowering the plurality of remote operated vehicles close to said lower end portion of said killing string; d) connecting said remote operated vehicles to said constraint group; e) detecting, in real time, a relative position of said flow of fluids with respect to said vehicles and calculating a position of an outlet hole of said flow; f) on the basis of said calculated position of the outlet hole, coordinatedly piloting said vehicles so as to bring a lower end of said killing string in correspondence with said position of the outlet hole of said flow.