Tool protection guide with energy absorbing bumper
US5730218A · kind A · utility
8Cited by
8References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1996 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | Jan 31, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/1021
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
According to the present invention, there is provided a device for guiding a tool on a string within a blow out prevention ("BOP") stack. In one embodiment, the device includes a top collar connected to a bottom collar by a shroud having a plurality of flexible members which bow outwardly from the collars, wherein the shroud covers a portion of the tool. An energy absorbing bumper is provided above the top collar to absorb structural impact caused by a blow out or other inadvertant pressure in a downhole application.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.