Method for drilling deviated wells into an offshore substrate
US4326595A · kind A · utility
6Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 25, 1980 |
| Grant date | Apr 27, 1982 |
| Priority date | — |
| Expiry date | Apr 25, 2000 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B15/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Method for drilling well bores into an offshore substrate from a marine platform which is fixed to the ocean floor. The latter is provided with a cage which is removably positioned in a platform leg. A drill conductor carried in the cage guides a lowering drill string into a desired direction away from the platform. The cage is periodically raised and rotated, or provided with a different conductor orientation to permit a variation in the drilling direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.