Disengagable burr mill
US7191835B2 · kind B2 · utility
7Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2002 |
| Grant date | Mar 20, 2007 |
| Priority date | — |
| Expiry date | Jul 10, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B29/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole tool for use in the removal of burrs or other unwanted material from an inner surface of a pipeline, well casing or other tubular. The tool has a plurality of milling elements, which may be biased against the surface or retracted from the surface to disengage the tool from the tubular. A drop ball mechanism with a fluid by-pass is described for disengaging the milling elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.