Patent ID: 9651694
Date: 2017-05-16
CPC Classifications: G01V

Claim:
1. A method of seismic exploration above a region of the subsurface of the earth containing structural or stratigraphic features conducive to the presence, migration, or accumulation of hydrocarbons, wherein is provided a seismic survey collected proximate to the region of the subsurface of the earth, said seismic survey comprising a plurality of seismic traces, comprising the steps of: (a) accessing at least a portion of said plurality of seismic traces; (b) obtaining a dip field associated with said accessed plurality of seismic traces, said dip field at least being defined at a plurality of (x,y,z) image points within said seismic survey; (c) specifying an upper specular index threshold and a lower specular index threshold different from said upper specular index threshold at each of said plurality of (x,y,z) image points; (d) for each of said plurality of (x,y,z) image points, (e) using at least a portion of said migrated seismic dataset in exploration for hydrocarbons within the region of the subsurface of the earth.