| 摘要 |
Downhole wireline cleaning tool (1) adapted to scrape and remove objects, such as scale decreasing an inner diameter of a casing in a wellbore, comprising a tool housing (4) having a first housing part (5) and a second housing part (6), a projectable arm (7) which is pivotably connected with the first housing part at a first end of the projectable arm, the projectable arm having a plurality of bits (9) in a second end, said projectable arm (7) being movable between a retracted position and a projected position in relation to the tool housing (4), an arm activation assembly (11) for moving the projectable arm between the retracted position and the projected position, and a rotatable shaft (12) for rotating the projectable arm (7), wherein the bits are arranged along an extension of the projectable arm, wherein the extension of the arm extends across the centre tool axis in at least the retracted position, so that the bits of the arm are arranged to scrape the entire internal cross-sectional area of the casing.. |
