Method for sealing between a lining and borehole, casing or pipeline
US5494106A · kind A · utility
167Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1995 |
| Grant date | Feb 27, 1996 |
| Priority date | — |
| Expiry date | Mar 23, 2015 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/103
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
To seal the connection between an internal lining and external borehole, casing or pipeline, one or more elastically deformable annular seals are placed on the preform in a contracted state, in a configuration which does not impede insertion of the preform into the borehole, casing or pipeline. During expansion of the preform the seal itself forms an annular groove for receiving it in the exterior surface of the preform. After hardening of the preform a rigid lining is obtained having an integral seal. Applications include repair of boreholes, casings, especially in oil wells, or pipelines, by internal lining.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.