Method and device with biasing force for sealing a well
US7975761B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2008 |
| Grant date | Jul 12, 2011 |
| Priority date | — |
| Expiry date | Sep 28, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/062
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods and devices with biasing force for sealing a well. Such a device is a blowout preventer has a body including a cavity having first and second recesses, a ram block configured to move inside the cavity, a top seat provided in the first recess and configured to seal the well when the ram block is closed, a wear plate provided in the second recess and configured to contact the ram block when the ram block moves inside the cavity over the wear plate, and a biasing element provided inside the cavity and configured to apply a biasing force on at least one of the top seat, the ram block or the wear plate to increase the sealing of the well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.