Methods and apparatus for harvesting potential energy downhole
US8127833B2 · kind B2 · utility
8Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2006 |
| Grant date | Mar 6, 2012 |
| Priority date | — |
| Expiry date | Jan 10, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B41/0085
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods and apparatus for harvesting energy while moving a tool through a well are shown and described. The harvested energy can be used by the tool to perform work once it reaches an intended location in the well, or along the way. A considerable amount of potential energy is typically lost by oilfield tools as they move down through a borehole. Methods and apparatus described herein recover and/or store some of the energy during the downward movement of the tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.