Facility for an oil well
US5657821A · kind A · utility
10Cited by
16References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1995 |
| Grant date | Aug 19, 1997 |
| Priority date | — |
| Expiry date | Jul 31, 2015 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A facility for an oil well, extending from the surface (12) towards an oil-bearing rock stratum (14), includes a first casing (20) placed in the well and forming a flow way towards the surface for the hydrocarbons originating from the oil-bearing rock stratum (14). According to the invention the well receives a second casing (22) forming a second flow way towards the surface for the hydrocarbons originating from the same rock stratum, the facility additionally including a chamber (51) between the casings (20,22) and the well wall (18), which does not contain any hydrocarbons originating from the rock stratum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.