Drop in dart activated downhole vibration tool
US6866104B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2003 |
| Grant date | Mar 15, 2005 |
| Priority date | — |
| Expiry date | Feb 13, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B31/005
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole vibration tool consisting of a body assembly installed in a work string, and a drop-in dart valve assembly. An open inner bore through the body assembly allows the performance of operations through the body assembly. To activate the vibration tool, the dart valve assembly is dropped into the work string and pumped downhole into engagement with the body assembly. Once the dart valve assembly is in place in the body assembly, continued pumping of fluid will cause the tool to begin to vibrate longitudinally. When the jarring operation is finished, the dart valve assembly can be released from the body assembly and retrieved, with a wireline or coiled tubing unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.