Guidelineless system for riser entry/reentry that permits quick release of a riser column from a subsea installation
A guidelineless riser entry/reentry system is disclosed which permits a safe and quick release of riser column from a subsea installation. The system includes two guide funnels mounted on opposite sides of the subsea installation at the upper end thereof for the purpose of engaging respective telescopic posts mounted at the lower end of the riser column. With the posts in an extended position the riser may be appropriately maneuvered to position the posts in their respective guide funnels. This way, the riser is properly positioned on and orientated with respect to the subsea installation. The riser may then be disconnected or connected to the subsea installation and the posts moved into retracted position so that the riser may be rapidly removed from the subsea installation.
- Assignee:
- Chevron Research Co.
- Patent Number(s):
- US 4399872
- OSTI ID:
- 5616045
- Country of Publication:
- United States
- Language:
- English
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