Drilling riser assemblies
US10301886B2 · kind B2 · utility
0Cited by
41References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2014 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | Mar 12, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/0853
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A riser assembly is disclosed comprising: a main tube; two flanges coupled to the main tube, each flange comprising: a central lumen configured to be in fluid communication with the main tube; at least one choke/kill hole configured to receive a choke/kill line; at least one booster hole configured to receive a booster line; and a plurality of bolt holes, each bolt hole comprising a tapered portion and a dowel slot, where each bolt hole is configured to receive a nut, a bolt, and a dowel. In certain embodiments, riser strings comprising at least two riser assemblies coupled to each other are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.