Downhole method for removal of tubular metal structure

A downhole method for removal of at least part of a first well tubular metal structure in a borehole of an existing well having a top, the first well tubular metal structure having a longitudinal extension and a first end closest to the top, comprising:

• inserting a downhole wireline tool having an anchor section and a machining device in the first well tubular metal structure,
• positioning the downhole wireline tool opposite a first section of the first well tubular metal structure so that the machining device is positioned 8-12 metres from the first end of the first well tubular metal structure and the anchor section is arranged above the machining device,
• anchoring the downhole wireline tool opposite the first section by activating the anchor section to abut an inner surface of the first well tubular metal structure and provide a radial force sufficient to fix the first section of 8-12 metres in relation to downhole wireline tool,
• separating the first section having a length of 8-12 metres from a second section of the first well tubular metal structure by machining into and along a circumference of the first well tubular metal structure,
• retrieving the first section from the well by pulling in the wireline together with the downhole wireline tool having the first section of 8-12 metres, creating a new first end of the first well tubular metal structure in the well,
• inserting the downhole wireline tool into the first well tubular metal structure again,
• positioning the downhole wireline tool opposite a new first section of the first well tubular metal structure so that the machining device is positioned 8-12 metres from the new first end of the first well tubular metal structure and the anchor section is arranged above the machining device,
• anchoring the downhole wireline tool opposite the new first section by activating the anchor section to abut the inner surface of the first well tubular metal structure and provide a radial force sufficient to fix the new first section of 8-12 metres in relation to downhole wireline tool,
• separating the new first section having a length of 8-12 metres from the rest of the first well tubular metal structure by machining into and along the circumference of the first well tubular metal structure, and
• retrieving the new first section from the well by pulling in the wireline together with the downhole wireline tool having the new first section of 8-12 metres.