METHOD AND SYSTEM FOR THE EXTINCTION OF AN UNDERWATER WELL FOR THE EXTRACTION OF HYDROCARBONS UNDER UNCONTROLLED FLUID DISCHARGE CONDITIONS

摘要

The present invention relates to a method for the extinction or oil well-killing or killing of an underwater well for the extraction of hydrocarbons under uncontrolled fluid discharge conditions, also called blowout, which comprises the phases which consist in assembling (110), in correspondence with the lower end portion (40b) of a string of pipes for the extinction or killing string (40), a constraint group (20) for rigid connection between a plurality of remote -operated underwater vehicles (30) and the killing string (40); detecting (120) the position of a flow of fluids (70) and positioning the killing string (40) substantially in correspondence with said flow (70); lowering (130) a plurality of remote -pperated vehicles (30) close to the lower end portion (40b) of the killing string (40); connecting (140) the remote -operated vehicles (30) to the constraint group (20); detecting (150) in real time the relative position of the flow of fluids (70) with respect to the vehicles (30) and calculating the position of the outlet hole of the flow (70); on the basis of the calculated position of the outlet hole, coordinately piloting the vehicles (30) so as to bring the lower end (40a) of the string (40) in correspondence with the position of the outlet hole of the flow (70).