Combined milling and scraping tool
US7096950B2 · kind B2 · utility
30Cited by
12References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2001 |
| Grant date | Aug 29, 2006 |
| Priority date | — |
| Expiry date | Jul 26, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B29/002
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole tool (1) for providing the dual role of cleaning and milling within a wellbore casing or liner is described. In an embodiment scraper blades (6) are mounted on a body (2) together with a milling sleeve (4). Additionally, a centralizer sleeve (3) is incorporated as is a filter and/or junk basket for collecting debris is dislodged from the casing or liner during the cleaning and milling operation. The milling sleeve (4) can be locked onto the body (2) while the cleaning members e.g. scraper blades (6) may be free floating around the tool (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.