Well abandonment
AssigneeCallidus Capital B.V.
InventorFeitze Veenstra
Life of this patent
Estimating the term…
Abstract
A device for removing part of a liner or casing of a well or pile. The device includes a device body, which is arranged around a centreline of the device body and one or more hollow conduits comprising oxidizable material at least at a distal end. The one or more hollow conduits are arranged for having oxygen transported therethrough from a proximal end to the distal end. The device further including a supply of oxygen arranged to supply oxygen to proximal ends of the one or more hollow conduits and a feeding module connected to the device body and the one or more hollow conduits. The feeding module arranged for feeding the one or more hollow conduits with their distal end in a direction at least partially away from the centreline of the device body.
Claims12
A method for placing a seal plug in a liner of a well, the method comprising the steps of:
- lowering a device for placing a seal plug into the liner of the well;
- providing a flow of fluid to an inlet of a hollow chamber of a restriction member of the device for placing the seal plug, wherein the seal plug is at least partially positioned in the hollow chamber between the inlet and an outlet passage of the hollow chamber;
- and
- allowing the seal plug to move relative to the restriction member by virtue of the hollow chamber becoming filled with fluid to release the seal plug into an unrestricted state wherein the seal plug forms a circumferential seal against an inner wall of the liner.
Dependencies are inferred from the claim text.