Downhole tool
AssigneeWelltec A/S
InventorJørgen Hallundbæk
Life of this patent
Estimating the term…
Abstract
A downhole tool, for removing a restriction in a well tubular metal structure having a wall and an inner diameter, has a tool axis and a tool body having a first part and a second part, an electrical motor arranged in the first part for rotating a rotatable shaft, and a core bit arranged in the second part and having a first end connected with the rotatable shaft and a second end having a cutting edge. The second part of the downhole tool further includes a locator for locating the rim section, the locator being rotable with the core bit until the locator locates the rim section and a threshold value is reached.
Claims18
A downhole tool for removing a restriction in a well tubular metal structure having a wall and an inner diameter, the restriction partly blocking the inner diameter, creating an opening defined at least partly by a rim section of the restriction, the downhole tool having a tool axis and comprising:
- a tool body having a first part and a second part,
- an electrical motor arranged in the first part and configured to rotate a rotatable shaft, and
- a core bit arranged in the second part and having a first end connected with the rotatable shaft and a second end having a cutting edge,
- wherein the second part of the downhole tool further comprises:
- a locator configured to locate the rim section,
- wherein the locator is configured to rotate with the core bit until the locator locates the rim section and a threshold value is reached, and wherein the locator is configured to be disconnected from the rotation of the core bit when the threshold value is reached.
Dependencies are inferred from the claim text.