Travel stop for expansion tool to limit stress on a surrounding tubular
US10053947B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2014 |
| Grant date | Aug 21, 2018 |
| Priority date | — |
| Expiry date | Jan 28, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/1293
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An expandable anchor/seal is pushed up a ramp until making contact with the surrounding tubular as or after the anchor/seal contacts the same tubular. The setting sleeve is made from high yield steel that has a weakened leading end to reduce the force required to push the leading end and the anchor/seal and an outer surface treatment at a leading end that engages or penetrates the wall of the surrounding tubular. Preferably a plurality of fingers are formed with axially oriented slots starting from a leading end allowing fingers to flex as they ride up the ramp on the mandrel for setting the anchor/seal and locking that set with the setting sleeve exterior surface configuration that can abut or penetrate the surrounding tubular.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.