Dual riser assembly, deep water drilling method and apparatus
US6443240B1 · kind B1 · utility
25Cited by
9References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 6, 1999 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Oct 6, 2019 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/038
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A dual riser assembly for use with an offshore multi-activity drilling assembly to conduct drilling operations from a deck above the surface of a body of water into the bed of the body of water utilizing two risers, a first and a second, which extend from a location above the surface of a body of water to a common location adjacent to the bed of the body of water. Each riser terminates, at a distal end, into a dual riser assembly, allowing for selective open internal communication between each of the two risers and a single wellhole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.