Method and apparatus for severing tubular members
US5525010A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 1994 |
| Grant date | Jun 11, 1996 |
| Priority date | — |
| Expiry date | May 17, 2014 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02B2017/0052
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and apparatus for severing tubular members below a mud line. The mud is evacuated from the target area of the tubular member and the apparatus is lowered through the inner opening of the tubular member to the target area. A housing of the apparatus carries a plurality of centralizing fins which hinge 90 degrees in relation to their pre-deployed position and centralize the housing in the target area. An explosive material contained in the housing is extruded, by movement of the piston, into a flexible bag secured at a lower portion of the housing, forcing the bag to form a receptacle for the explosive. A sidewall of the bag protector pivots at a right angle to form a support for the receptacle with the explosive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.