Multi-drain drilling and petroleum production start-up device
US4573541A · kind A · utility
146Cited by
10References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 9, 1984 |
| Grant date | Mar 4, 1986 |
| Priority date | — |
| Expiry date | Aug 9, 2004 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/14
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Multi-drain drilling and petroleum production start-up device. This comprises at least one take-off assembly (11) which is fastened in situ in an outer tube of the well and at least one take-off tube (12 to 14) of which communicates by its lower end with a branched well. The invention is used, in particular, in branched wells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.