Method for favoring the injection of fluids in producing zone
US5211240A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1991 |
| Grant date | May 18, 1993 |
| Priority date | — |
| Expiry date | Nov 4, 2011 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/305
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In a drain (2) fitted with a perforated casing (3), a fluid under pressure is injected in various locations by selectively changing the position of the injection points in relation to these locations by means of a pipe (4). The position of the injection ports and/or the area thereof is varied through the selective opening of valves or by displacing an injection pipe (4). The density of the perforations of the casing (3) and/or of the injection pipe (4) can also be varied. A sweeping of the reservoir crossed by the drain is achieved by injecting for example a hot gaseous fluid such as steam under pressure and the density of the perforations (11) of a pipe (4) is for example selected in such a way that the amount of heat transferred to the formation is substantially constant along the drain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.