... caused downtime and a need for re-cabling of subsea installations and frequent change-out of components, since designs have trended towards keeping the electrical components to a minimum level. In the 1990s, initiatives were taken to run power and communication on inductive couplers in the subsea...

... the umbilical and in-field jumpers. In addition, an electronics interface card in the SCM, supplied by the downhole gauge (DHG) supplier, provides power and communications to the in-well electrical or optical sensor and sends the acquired data to surface (see Figure 1). Control of IWC valves has additional...

...25 Opto-Electrical Solutions for Offshore Fields M Fullenbaum Alcatel Submarine Networks, France Novel Power and Communications Solutions for Offshore Fields The oil and gas industry is continuously breaking barriers as new offshore fields are being developed in greater depths, further offshore...

... qualified to operate over a distance of 220 km are: Long-range communications with no repeaters Long-range supply of power at up to 3 kV High data rate requirements HV electrical and fibre-optic wet-mating connectors A cost-effective main umbilical Diverse back-up strategies This paper...

... hydraulic fluid into the sea. These are alleviated with the use of all-electric controls technology. The Approach for Shtokman The system concept can be broken into several areas such as communication architecture, power system design and subsea control system design (see Figure 1). The subsea system...

... the 'library' available, plug lt onto the ROV and go and perform the task - ths is the current philosophy To a d this, modem 'tractor' ROVs have additional capacity built-in to accommodate extra communications and video channels as well as spare electnc and hydraulic power and control circuits Communications...

... configurations, connection methods and power and signal dlstrlbutlon Options are proposed for further investigation during the development project The final section of the paper gives a br~ef description of three of the many possible applications of the proposed subsea digital communication and power...