One of the more promising opportunities for brownfield investment is low-cost subsea boosting systems. These projects do not require the drilling of new wells or significant infrastructure investments in new subsea equipment or new topside facilities. Incremental investments in low-cost boosting systems result in substantial increases in revenues and, therefore, high rates of return. The costs of subsea boosting systems have been reduced by adopting three primary strategies: simplifying the system design to reduce weight and cost, simplifying the installation and intervention, and reducing complexity and risk.
Analyses of well and reservoir conditions suggest that there are hundreds of wells worldwide that have the economic potential for low-cost subsea boosting. The return on investment (ROI) in these cases ranges from 250% to greater than 500%. Subsea boosting systems are a robust and mature technology; worldwide, more than 65 mudline units and more than 50 submersible pumps have been installed. Consequently, 19 operators have addressed production challenges with subsea boosting technology.
Key applications have used subsea pumps as part of a subsea-processing station. For example, subsea pumps were installed to boost liquids separated subsea in three-phase separation systems, for the purposes of debottlenecking topside facilities, in the Petrobras Marlim project and the Statoil Tordis project, the former with horizontal pipe separator technology and the latter with conventional horizontal three-phase separator technology....
Cost Reduction of Subsea Boosting Systems by Use of Innovative Technologies
01 August 2017