Slip energized by longitudinal shrinkage
US7367390B2 · kind B2 · utility
4Cited by
15References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2006 |
| Grant date | May 6, 2008 |
| Priority date | — |
| Expiry date | Nov 7, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B29/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A slip for an expanding hanger or patch is disclosed. The slip is mounted over the hanger body and has an internal profile that nests within a mating profile on the exterior of the hanger. When a compressive force is applied to the hanger, it shrinks longitudinally and as a result the slip is cammed radially to the extent the inside diameter of the surrounding tubing permits. When the swage is advanced, the diameter of the hanger increases forcing the slip into preferably penetrating contact with the inside wall of the surrounding tubular.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.