Method and device for liner system
US7367410B2 · kind B2 · utility
48Cited by
14References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 6, 2003 |
| Grant date | May 6, 2008 |
| Priority date | — |
| Expiry date | Dec 14, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/043
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Method for drilling and lining a well wherein at least one liner (1, 2, 32) with a larger external diameter than the substantial part of a drilling riser (10) is pre-installed at a point below the substantial part of the drilling riser (10). A bore hole section (21) is drilled after the drilling riser (10) has been installed, the bore hole section having a larger diameter than the at least one pre-installed liner (1, 2, 32). The at least one pre-installed liner (1, 2, 32) is subsequently lowered into the bore hole section (21, 22). A drilling and liner system for implementing the method is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.