Marine drilling riser system
US8312933B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2011 |
| Grant date | Nov 20, 2012 |
| Priority date | — |
| Expiry date | Mar 29, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S285/922
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A marine drilling riser system for securing drilling riser joints in a drilling riser string is presented. The drilling riser string is assembled by connecting a pin end of one drilling riser joint to a box end of an adjoining drilling riser joint by using a moveable ring to drive a fastener of one drilling riser joint against the adjoining drilling riser joint. A spider is used to drive the movable ring axially from a position where the fastener is not engaged against the adjoining drilling riser joint to a position where the fastener is engaged against the adjoining drilling riser joint, and vice versa. A latch is used to prevent the moveable ring from moving inadvertently from the second position. The spider may also be used to support the marine drilling riser string during assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.