Hydraulic cutting tool, system and method for controlled hydraulic cutting through a pipe wall in a well, and also uses of the cutting tool and the system

摘要

The invention comprises a hydraulic cutting tool (24; 86), a system, a method, and also uses of the cutting tool (24; 86) and the system, for hydraulic cutting through a pipe wall (26) of a pipe body (8). For this purpose, the cutting tool (24; 86) is provided with at least one cutting section (52; 88, 90) comprising at least one fluid discharge body (54; 54´). Each such fluid discharge body (54; 54´) comprises at least two outwardly directed discharge openings (76a, 78a; 76a´, 78a´) having non-parallel discharge directions (70a, 72a; 70a´, 72a´) directed at a common intersection point (74; 74´) located outside the fluid discharge body (54; 54´). The cutting is carried out by means of an abrasive fluid (32) being supplied, via a flow-through pipe string (30), to the at least one fluid discharge body (54; 54´) from a remote location. Thereby, abrasive cutting jets (76b, 78b; 76b´, 78b´) will discharge at high velocity from the fluid discharge body (54; 54´) so as to meet and disperse in the intersection point (74; 74´), thus weakening the further cutting ability of the cutting jets (76b, 78b; 76b´, 78b´).