Method and system for determining a location of hydrocarbon reservoir within subterranean region

A non-transitory computer-readable medium having computer-executable instructions stored thereon that, when executed by a processor, perform steps comprising:

• receiving a seismic dataset for a subterranean region, wherein the seismic dataset comprises a plurality of recorded multiple events;
• generating a predicted multiple model using a multiple prediction method and the seismic dataset, wherein the predicted multiple model comprises a plurality of estimated multiple events;
• estimating a set of initial matching filters using a matching method, wherein the set of initial matching filters matches the plurality of estimated multiple events to the plurality of recorded multiple events;
• generating a tensor field based, at least in part, on the predicted multiple model;
• determining a set of structure-oriented matching filters based, at least in part, on the set of initial matching filters and the tensor field;
• generating a filtered multiple model based, at least in part, on the predicted multiple model and the set of structure-oriented matching filters;
• generating a multiple-attenuated seismic dataset based, at least in part, on the filtered multiple model and the seismic dataset;
• forming a seismic image based, at least in part, on the multiple-attenuated seismic dataset;
• and
• determining a location of a hydrocarbon reservoir within the subterranean region based, at least in part, on the seismic image.

A system, comprising:

• a seismic acquisition system configured to:
• record a seismic dataset for a subterranean region, wherein the seismic dataset comprises a plurality of recorded multiple events;
• a seismic processing system configured to:
• receive the seismic dataset,
• generate a predicted multiple model using a multiple prediction method and the seismic dataset, wherein the predicted multiple model comprises a plurality of estimated multiple events,
• estimate a set of initial matching filters using a matching method, wherein the set of initial matching filters matches the plurality of estimated multiple events to the plurality of recorded multiple events,
• generate a tensor field based, at least in part, on the predicted multiple model,
• determine a set of structure-oriented matching filters based, at least in part, on the set of initial matching filters and the tensor field,
• generate a filtered multiple model based, at least in part, on the predicted multiple model and the set of structure-oriented matching filters,
• generate a multiple-attenuated seismic dataset based, at least in part, on the filtered multiple model and the seismic dataset, and
• form a seismic image based, at least in part, on the multiple-attenuated seismic dataset;
• and
• a seismic interpretation workstation configured to:
• determine a location of a hydrocarbon reservoir within the subterranean region based, at least in part, on the seismic image.