Expandable mill and methods of use
US8905126B2 · kind B2 · utility
10Cited by
14References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 16, 2011 |
| Grant date | Dec 9, 2014 |
| Priority date | — |
| Expiry date | Feb 16, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B37/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In some embodiments, apparatus useful for cleaning at least part of the interior surface of a generally cylindrically-shaped member disposed in a subterranean well includes a housing and a plurality of retractable mill blades supported on the housing and movable from an initial retracted position to an extended position and thereafter to a final retracted position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.