Definitions for "Umbilicals"
connections between topside equipment and subsea equipment. The number and type of umbilicals vary according to field requirements, and umbilicals may carry the service lines, hydraulic tubes and electric cables and/or fiber-optic lines.
These are hydraulic control lines, which are used in the erection and maintenance of oil platforms for the control of tools and appliances under water (where divers can no longer work). Furthermore, it is possible by umbilicals to control the individual boreholes in the vicinity of several platforms by means of "remote control" from the shore with only one single control stand (e.g.: closing of the borehole in emergency) and thus to achieve substantial cost savings.