Collapse arrestor tool
US7647973B2 · kind B2 · utility
15Cited by
4References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2006 |
| Grant date | Jan 19, 2010 |
| Priority date | — |
| Expiry date | Sep 20, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/1007
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A tool is employed with a subsea wellhead assembly for preventing the collapse of a wear bushing located in a drill-through tubular member due to external test forces being applied to it. The tool has a connector that connects to the drill-through tubular member. A stem extends downward from the connector and has a reacting member at its lower end. The reacting member engages an inner diameter of the wear bushing to resist inwardly directed forces due to fluid pressure on the exterior of the wear bushing. The tool can be incorporated with a running tool or with a blowout preventer isolation test tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.