Annular flow shifting device
US7562703B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2006 |
| Grant date | Jul 21, 2009 |
| Priority date | — |
| Expiry date | Dec 27, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B37/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A wellbore cleanup tool collects debris when moved in one direction downhole. A flow diverter is extended for such flow diversion when debris is collected. When running the tool in the opposite direction in the wellbore, the flow diverter is in whole or in part articulated to retract so as to reduce resistance to fluid that passes around the outside of the tool. A segmented diverter can have fixed and movable components that are guided. The movable components can become longitudinally offset from the fixed components for movement in the direction where maximum flow bypass around the outside of the tool is desired. In an alternative embodiment, the diverter segments can all be movable on an inclined track to retract against a bias force for fluid bias with movement of the tool in the opposite direction allowing the bias to push the segments on the inclined track for diversion of debris laden fluid into a capture volume in the tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.