Downhole artificial lifting system
US9267363B2 · kind B2 · utility
1Cited by
9References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2010 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | Oct 19, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/123
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention relates to a downhole artificial lifting system for introducing fluid into a production casing from an annulus arranged outside the production casing. The production casing has an axial extension and a casing wall with a wall thickness, and the system comprises the production casing which at a first part is surrounded by an intermediate casing creating the annulus which is downwardly closed, and a fluid delivering means pumping fluid into the annulus. The invention also relates to a tool for use in the system and a method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.