Downhole jarring tool adjuster
US6896060B2 · kind B2 · utility
10Cited by
2References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 27, 2003 |
| Grant date | May 24, 2005 |
| Priority date | — |
| Expiry date | Apr 6, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B31/107
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole jarring apparatus including a shaft and a first mandrel configured to releasably engage, a collar operatively attached to the shaft such that an axial position of the collar relative to the shaft is adjustable by access through an opening in an outer surface of a second mandrel, and an energy store configured to exert a force against the shaft, wherein the force is adjustable in response to the axial position of the collar relative to the shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.