US 10,324,204 B1 · Diffraction imaging systems and methods using specularity gathers

Abstract

In some embodiments, a seismic processing method comprises assembling a specularity gather by determining a specularity value at each of a plurality of subsurface locations, and summing trace amplitudes into a plurality of bins, each bin characterized by a range of specularity values. The specularity value at a subsurface location is computed according to an angle between a normal to a local reflector and a direction of a total (source+receiver) traveltime gradient. For example, the specularity may be proportional to (e.g. equal to) a magnitude of the cosine of the angle. A diffraction image may be generated by summing specularity gather data over specularity, with specular event amplitudes attenuated relative to diffractive event amplitudes.

Claims15

Dependent claims

A seismic data processing method comprising employing a computer system including at least one processor to:

determine a specularity value for each of a plurality of amplitudes of a plurality of seismic data traces, wherein determining the specularity value for a seismic trace amplitude is performed according to an angle between a normal to a local reflector and a gradient of a total source-receiver traveltime corresponding to the seismic trace amplitude;
sum a set of seismic trace amplitudes of the seismic data traces into each of a plurality of specularity bins, each bin being characterized by a range of specularity values;
and
order the summed trace amplitudes by specularity value to generate a specularity gather characterizing the seismic data traces.

1 more element

Dependencies are inferred from the claim text.

Diffraction imaging systems and methods using specularity gathers

Life of this patent

Diffraction imaging systems and methods using specularity gathers

Life of this patent

Abstract

Claims15