Method and system of imaging hydrocarbon reservoirs using adaptive aperture tapering in kirchhoff depth migration

A system comprising:

• a seismic acquisition system configured to obtain a pre-stack seismic dataset of a subterranean region;
• a seismic processing system configured to:
• receive the pre-stack seismic dataset,
• receive a seismic velocity model of the subterranean region,
• generate an adaptive migration taper based on the pre-stack seismic dataset comprising:
• generate a dip-constrained weight function based on a maximum dip for a depth and a first taper length;
• generate an adaptive weight function based on a depth index and a second taper length;
• and
• combine the dip-constrained weight function and the adaptive weight function, and
• form a migrated seismic image using a migration function, the seismic velocity model, the pre-stack seismic dataset, and the adaptive migration taper;
• a seismic interpretation workstation configured to determine a location of a hydrocarbon reservoir based on the migrated seismic image;
• a wellbore planning system configured to plan a wellbore path to intersect the hydrocarbon reservoir;
• and
• a drilling system configured to drill a wellbore guided by the wellbore path.