Smart water - advanced waterflooding of Danish oil and gas recovery

Our aim is to formulate proposals for pilot water flooding in Danish North Sea oil and gas reservoirs. The proposed research involves flow-through experiments followed by modelling as well as wireline log analysis aimed at assesseing potential North Sea water sources. The flow-through experiments will be done at reservoir temperature on reservoir core samples saturated with synthetic pore water and reservoir petroleum as aadvised by field operators. Modeling will include: thermodynamic modeling, making it possible to apply equations of state for in situ electrolyte solutions and petroleum mixtures; and transport modeling in order to make insight into an optimal dynamics of the injection process. The petrophysical log analysis will be done in collaboration with operators. Recent results from research at DTU (Technical University of Denmark) indicate that in water wet chalk, pore water chemistry may have significant influence on single phase permeability due to solid-fluid interaction. It was also found that in water wet chalk changes iin pore water chemistry may influence the recovery, and that petroleum-water interaction could play a significant role. It is estimated that a pilot test of the Smart Water techniques emerged from this project will be technically possible within a year from the end of the project