We perform a semi-quantitative analysis of the amount of rebound of a reservoir initially depleted, exploiting some rather unique 4D seismic observations of “conventional” and “inverse” timeshifts at two sister wells, each producing from (almost) isolated compartments in the same reservoir.

We believe the “inverse” timeshifts observed around the original borehole represent the effects of reservoir rebound (opposite of compaction) following repressurisation of the compartment after the well was shut-in, also corroborated by in-well pressure gauge data.

Keywords:
geology, geological subdiscipline, inverse, compaction, timeshift, rebound, international, energy 10, magnitude, reservoir compaction
Subjects:
Reservoir Characterization, Seismic processing and interpretation
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