Apparatus for removal of milling debris
US6276452A · kind A · utility
142Cited by
20References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1999 |
| Grant date | Aug 21, 2001 |
| Priority date | — |
| Expiry date | Nov 5, 2019 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B29/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus and method for drawing small milling debris into a combination milling and debris retrieval tool, during the performance of the milling operation. A milling tool has a fluid intake port near its lower end, where debris-laden fluid is drawn into the milling tool and subsequently into a separator section. The separator section has a debris deflection tube and a screen for separating the debris from the fluid. Fluid is drawn into the tool by either a set of eductor nozzles or a downhole motor and pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.