ABSTRACT

The installation of a subsea pipeline system was considered to transport carbon dioxide in liquid or dense-phase state from onshore for the disposal into saline aquifers or injection into hydrocarbon reservoirs for Enhanced Oil Recovery (EOR) schemes. A dynamic OLGA model has been used to successfully demonstrate the capability and requirements of a control philosophy using the aquifer injection to maintain minimum system pressure at 105 bara (to keep the system in the dense phase) when supply exceeds EOR demand, with pressure overrides to prevent high pressures from either low or excessive EOR demands. This work also highlighted the importance of the thermodynamic and physical properties modelling for nearly pure CO2 fluids.

Keywords:
upstream oil & gas, system pressure, enhanced recovery, multiphase 15, objective, controller, subsurface storage, flow assurance, eor demand, operation
Subjects:
Flow Assurance, Fluid Characterization, Improved and Enhanced Recovery, Storage Reservoir Engineering, Hydrates, Phase behavior and PVT measurements, CO2 capture and sequestration
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2011. BHR Group 2011 Multiphase 15
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