Amplitude with offset and direct hydrocarbon indicators enable mapping of gas reservoirs in the Golden Beach, Baleen and Patricia Fields, Gippsland Basin, Victoria

Abstract

Definition of gas reservoirs in several fields in the offshore Gippsland Basin, Victoria has been enhanced by use of amplitude variation with offset, direct hydrocarbon indicators and seismic modelling. Direct indicators include bright spots, flat spots and phase reversals associated with reduced acoustic impedance in the gas zones. The techniques have generally worked successfully at the Golden Beach Field and at the Baleen and Patricia gas discoveries at subsea depths from 600?700 m.