METHOD FOR QUANTIFYING THE VOLUMETRIC FLOW RATE OF A FLOW OF A DRILLING MUD IN A FLOATING STRUCTURE FOR SUBSOIL DRILLING

摘要

Method for quantifying a volumetric flow rate of a flow of drilling mud in a floating structure for subsoil drilling, said method comprising: providing a flowmeter (50) on a floating structure (20) for subsoil drilling, said flowmeter (50) being configured for generating a flow signal (FS); providing a detection device (70) on said floating structure (20), suitable for generating a heave signal (HS) representative of a substantially vertical heave of said floating structure (20); acquiring said flow signal (FS) and said heave signal (HS) through a processor (60); activating said processor (60) in order to transform said flow signal (FS), thereby obtaining a corresponding first spectrum (S1) in the frequency domain; activating said processor (60) in order to transform said heave signal (HS), thereby obtaining a corresponding second spectrum (S2) in the frequency domain; activating said processor (60) in order to compare said first spectrum (S1) with said second spectrum (S2), thereby obtaining a resultant spectrum (RS); activating said processor (60) in order to transform said resultant spectrum (RS), thereby obtaining a corresponding resultant signal (SX) in the time domain; activating said processor (60) in order to: determine a mean value of said flow signal (FS), add said resultant signal (SX) to said mean value, thereby obtaining a quantification of a flow of drilling mud in said floating structure; activating said processor (60) in order to generate an output signal (OUT) representative of said quantification.