E020 Modelling Gravity Signals Related to Fluids Movement in Reservoirs J. Mrlina* (Geophysical Institute ASCR) SUMMARY Monitoring of fluids in reservoirs became an essential tool for the development of hydrocarbon fields. Besides 4D seismic time-lapse microgravity measurements can determine fluids contact displacement. Theoretical modelling has been performed to test such gravity monitoring in the case of a small gas storage. The size of the gas-saturated part of the reservoir sequence was changed in various directions and depth (700 m to 1700 m) in order to determine the limits of the technique. Then the process of gas injecting and pumping was


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