Method and apparatus for repairing casings and the like
US4865127A · kind A · utility
126Cited by
4References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 25, 1988 |
| Grant date | Sep 12, 1989 |
| Priority date | — |
| Expiry date | Jul 25, 2008 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/124
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention relates to a method and apparatus for relining bores such as oil wells, using multiple layers of spiral wrapped, resilient lining material which expands to form a continuous liner for the bore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.