Submarine Optical Networks for Oil & Gas Operations

Abstract

Abstract A set of modular network node elements with underwater coupling connectors was developed and tested in a laboratory water tank for use in submarine installations to provide integrated data acquisition, communication and control for offshore oil and gas production facilities, covering large areas of petroleum fields. The present work demonstrates the feasibility, usefulness and flexibility of this system. A simulation of a submarine network was set up with the main components submerged in the laboratory water tank connecting various nodes through optical cables and through the Internet in order to represent a scenario with FPSOs, land offices and submarine instrumentation. Physical connection, disconnection and reconnection operations were simulated in underwater conditions. The simulation of the operations demonstrated the reliability and practicality of wetmate connectors, which means faster and safer field operations. Exchanging signals between various nodes showed the potential for better integration and real time responses for technical management of offshore facilities. Tests with underwater instrumentation proved the usefulness of the system to monitor and control offshore wells and submarine facilities remotely. This also denotes the potential for permanent marine seismic grids applied to petroleum reservoirs. The current world of interconnected digital systems may push the offshore oil industry and marine resources exploitation enterprises into more efficient operations, higher revenue-cost ratios, increased safety and lightener environmental impacts. Submarine optical networks can be applied to advance offshore systems into the next generation of real time remote monitoring, decision making and action, as well as continuous and reliable intercommunication between ocean and land units, with less people exposed to dangerous conditions.