During a laboratory waterflood study, undertaken at reservoir conditions to provide representative displacement data for predictive reservoir simulation studies, an investigation into acquiring representative wettability showed preserved samples exhibited significantly more oil wet character than restored samples. Further investigations concluded that core retrieval and/dr storage resulted in increased oil wet character. Preserved state samples were not therefore representative.

Keywords:
reservoir conditions, rate waterflood, permeability, in-situ saturation, saturation, breakthrough, waterflooding, initial water saturation, plug sample, permeability data
Subjects:
Drilling Operations, Reservoir Characterization, Reservoir Fluid Dynamics, Improved and Enhanced Recovery, Reservoir Simulation, Formation Evaluation & Management, Coring, fishing, Flow in porous media, Waterflooding, Core analysis
Copyright 1996, Society of Petroleum Engineers
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