Cutting a valve within a well stack

A method comprising:

• running a well tool comprising a main body and a laser emitter configured to emit a laser into a bore of a well tree;
• directing the laser emitted by the laser emitter into bore of the well tree within which a valve is installed, wherein the laser is directed in a downhole direction towards the valve;
• cutting through the valve by the laser directed in the downhole direction towards the valve;
• flowing water through the well tree while cutting;
• retaining a cut portion of the valve by a magnet;
• and
• after cutting through the valve, retracting the laser emitter into the main body.

A system comprising:

• a well tree comprising a valve to be cut;
• and
• a well tree tool within the well tree, the well tree tool comprising:
• a main body having a diameter small enough to be inserted into the well tree;
• a laser emitter attached to the main body, the laser emitter arranged to emit a laser beam, of sufficient power to cut through a metal valve, in a downhole direction, the laser emitter being retractable into the main body;
• a magnet on a downhole end of the tool, the magnet arranged to retain a sliced portion of metal valve cut by the laser beam;
• retractable anchors attached to the main body, the retractable anchors being substantially flush with an outer surface of the main body when in a retracted position, the retractable anchors extending from the main body to intersect with an inner wall of a well tree when in an extended position, the retractable anchors retaining the main body in a set position when in the extended position;
• centralizers attached to and extending from the main body, the centralizers centering the main body towards a center axis of the well tree;
• and
• a retractable camera arranged to observe a cutting surface, the camera being retractable into the main body.