Tool for inside chip separating processing of a tube and method for using the tool

A tool for inside chip-separating processing of a tube, wherein the tool comprises:

• a housing which is rotatable around a center axis of the tool;
• at least two blade holders each comprising a plurality of blades positioned along the periphery of each blade holder;
• and
• guide elements arranged to guide the blade holders between an active position and a passive position,
• wherein each of the blades is arranged in use to alternatingly contact the tube when the blades are in contact with the tube, the housing is rotating and the blade holders are rotating and in the active position;
• wherein each blade holder is rotatable around a center axis of the blade holder such that the blades alternatingly contact the tube in use.

A system for casing milling of a tube for a petroleum well, wherein the system comprises a centering element and a tool, wherein the tool further comprises:

• a housing which is rotatable around a center axis of the tool;
• at least two blade holders each comprising a plurality of blades positioned along the periphery of each blade holder;
• and
• guide elements arranged to guide the blade holders between an active position and a passive position,
• wherein each of the blades is arranged in use to alternatingly contact the tube when the blades are in contact with the tube, the housing is rotating and the blade holders are rotating and in the active position;
• wherein each blade holder is rotatable around a center axis of the blade holder such that the blades alternatingly contact the tube in use.

A method for using a tool for removing a portion of a tube, the method comprising the steps of:

• lowering the tool into a tube and to a depth at which a portion of the tube should desirably be removed;
• providing a rotation of the housing around the center axis of the tool;
• moving the tool in an axial direction in the tube;
• moving at least one blade holder into an active position so that the plurality of blades engage with the tube in a processing manner;
• moving the tool at an axial speed such that the plurality of blades penetrate the tube wall and chips are separated from the tube;
• stopping the rotation of the housing 1, and moving the at least one blade holder into a passive position when a desired length of the tube has been removed.