Time-Lapse Feasibility Study on a Shallow Marine Sandstone Reservoir Analogue

B-22 TIME-LAPSE FEASIBILITY STUDY ON A SHALLOW MARINE SANDSTONE RESERVOIR ANALOGUE Abstract 1 An extensive rock physics laboratory study is performed on sandstones of Cretaceous age collected from a mine and used as an analogue for shallow marine sandstone reservoirs. Velocities and porosity relationships with effective stresses are investigated in the case of loosely consolidated sandstone well-cemented sandstone and unconsolidated sand. This allows quantifying the effects of consolidation and cementation on the dry frame elastic moduli for use as input into time-lapse seismic modeling studies. An empirical methodology to compare and extrapolate the elastic moduli to other porosities (outside the