Downhole seal bore repair device
AssigneeBaker Hughes Incorporated
InventorDarren E. Bane
Life of this patent
Estimating the term…
Abstract
A tool is preferably landed in a downhole profile commonly found adjacent to seal bores. Once landed, preferably with coiled tubing, pressure in the coiled tubing triggers a switch to power a motor to rotate a polishing cylinder that features spirally wound vanes. A reservoir of resin or other repair material is connected to an injection pump to deliver the material as the vanes are rotating. The material exits between the vanes so that the vanes can spread it and work it into surface irregularities. After the material is sufficiently spread into voids and the requisite polishing completed, the seal bore is again ready to accept a tool in a sealed relationship.
Claims18
A method of repair of polished surfaces downhole for subsequent service as a sealing surface, comprising:
- anchoring a tool with a polishing head at a predetermined downhole location;
- positioning said tool, with a rotating polishing head, at a polished surface;
- spreading a fill material against the polished surface;
- working the fill material into voids in the polished surface with said polishing head:
- and
- sealing against the polished surface.
A method of repair of polished surfaces downhole, comprising:
- positioning a tool with a polishing head at the polished surface;
- spreading a fill material against the polished surface;
- working the fill material into voids in the polished surface with said polishing head;
- monitoring the surface condition of the polished surface;
- transmitting surface condition data to the well surface from said tool.
A tool for repair of polished surfaces downhole, comprising:
- a body having a polishing head, said body adapted to be supported adjacent a polished surface so as to align said polishing head with the polished surface;
- a fill material delivery system on said body for initially storing fill material and subsequently selectively delivering said stored fill material to the polished surface while said polishing head is disposed adjacent said polished surface to work the fill material into voids in the polished surface.
A tool for repair of polished surfaces downhole, comprising:
- a body having a polishing head, said body adapted to be supported adjacent a polished surface so as to align said polishing head with the polished surface;
- a fill material delivery system on said body for selectively delivering fill material to the polished surface while said polishing head is disposed adjacent said polished surface;
- said delivery system delivers the fill material to the periphery of said polishing head.
Dependencies are inferred from the claim text.