DNV has launched a concept it believes will reduce emissions and costs associated with generating power for remote and ultra-deepwater fields. The class society’s ‘Offshore Power system for a new era’ (OPera) concept centralises and shares the power generation between several production units.
According to DNV, OPera offers potential benefits like: reducing CO2 emissions by up to 40%; eliminating the need for topside processing power generation at every unit, increasing available deck space; and increasing revenues by installing additional processing capabilities, resulting in added oil production from the same size installation.
The design’s centralised location improves operational logistics by consolidating the location of power generation personnel, maintenance and spare parts.
OPera’s power hub has a gas-fired combined cycle power plant that increases power generation efficiency by more than 15%, compared with conventional gas turbines alone.
By consolidating power generation, the power hub also allows equipment to run at more optimal load. This benefit further reduces fuel consumption and overall emissions. The power hub is fueled by associated gas or parts of the export gas produced.
The OPera power hub can be tailored to each site, and can also serve as a logistical hub, a centralised CO2 removal unit, or part of offshore LNG production. The power plant consists of modular gas and steam units of 50MW and 100MW capacities, allowing the combined capacity to be tailored.
Depending on water depth, different platform and hull designs can support the power plant. The power hub can connect with different numbers and types of installations.
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