METHODS OF AND APPARATUS FOR CONNECTING A FLOATING SURFACE INSTALLATION TO AN UNDERWATER INSTALLATION BY AT LEAST ONE PIPE AND OFFSHORE HYDROCARBON PRODUCTION SYSTEMS

摘要

A system for offshore oil production, comprising at least one underwater installation to which is connected at least one flow line which is releasably connected to a flexible riser suspended from a surface installation. The system comprises a stationary guide structure on the water bottom provided at its upper end with support means for the lower end of the flexible riser. The flexible riser forms by gravity a free loop portion above the water bottom, in the vicinity of the guide structure.