Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Method and equipment for running riser pipes for mooring offshore floating platforms

Patent ·
OSTI ID:6987458

A system for running riser pipes from a floating vessel to each of a plurality of conductors set in the sea floor in a circular pattern. A vertically mooring guidance riser is first connected between the center of the pattern and the floating vessel. A permanent riser pipe is guided down to one of the conductors by use of a guide frame positioned on the guidance riser. When all of the permanent riser pipes are run, the guidance riser may be removed. Special running tools and guide frames are described.

Assignee:
Standard Oil Co. (Indiana), Chicago, Ill.
Patent Number(s):
US 4423982
OSTI ID:
6987458
Country of Publication:
United States
Language:
English