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Stress Maps

Pairs of structure maps (top left) from interpreted seismic horizons are subtracted to generate thickness (isochore) maps (middle) in the usual manner when mapping prospects and building the structural history of an area.


The three Anderson stress states (extended by PSI to seven, see bottom left) are identified from the reverse faults (pink), normal faults (grey) and anticlines (strike slip to uplift) then  transferred to the isochores to generate a stress-isochore (bottom left).


The stress-isochores are chosen to represent the sediments deposited during globally recognised compressional periods. They are then placed in the 3D (or 2D) seismic volume to form a 3D stress volume, thereby putting the structural history more precisely in an interactive quantified stress volume accessible for numerous exploration, drilling and production applications via 4DGeostress software.