Liner and reinforcing swage for conduit in a wellbore and method and apparatus for setting same
US3948321A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1974 |
| Grant date | Apr 6, 1976 |
| Priority date | — |
| Expiry date | Aug 29, 1994 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/105
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Method and apparatus for emplacing a liner in a conduit in a well penetrating subterranean formations characterized by suspending at a predetermined depth in the well at least one annular liner having an annular body portion and an adjacent, concentrically disposed swage means that is adapted for being driven interiorly of the body portion for expanding the latter outwardly into contact with the conduit; firing a setting tool in the method to drive the swage means concentrically interiorly of the body portion; and removing the setting tool, leaving the swage and the body portion set in the conduit with a large bore penetrating longitudinally thereof. Also disclosed are straddle patches having a liner at each end, either set in a unitary operation or set by a two-step operation; other combinations employing the liners and the specific apparatus for setting the liners.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.