Drilling riser adapter connection with subsea functionality
US8746349B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2011 |
| Grant date | Jun 10, 2014 |
| Priority date | — |
| Expiry date | Dec 31, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/085
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drilling riser adapter variably connects and releases a riser from a subsea wellhead assembly. The drilling riser adapter has a hydraulically actuated engagement assembly for selectively engaging and disengaging a lower end of the marine riser. The drilling riser adapter also includes a control panel communicatively coupled to the engagement assembly for actuating the engagement assembly to engage and disengage the lower end of the marine riser. The drilling riser adapter also includes a hydraulic fluid pressure receptacle on the control panel for engagement by a remotely operated vehicle to supply hydraulic fluid pressure to the engagement assembly. The drilling riser adapter may be actuated subsea to release a first riser from the wellhead assembly, and connect to a second riser.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.