Identifying geologic features in a subterranean formation using a post-stack seismic diffraction imaging condition

A method for seismic imaging of a subterranean geological formation, the method comprising:

• obtaining seismic data comprising a data volume representing a post-stacked image;
• applying a frequency-wavenumber (F-K) filter to the data volume extract a negative-dip structure image;
• applying the frequency-wavenumber (F-K) filter to the data volume extract a positive-dip structure image,
• wherein the F-K filter comprises a two dimensional (2D) F-K filter;
• iteratively applying the 2D F-K filter to a plurality of slices of a three dimensional data volume;
• multiplying the positive-dip structure image with the negative-dip structure image to generate a component image;
• and
• generating, based on the generated component image, a diffraction-enhanced seismic image representing a geological formation of the data volume;
• wherein iteratively applying the 2D F-K filter to a plurality of slices of a three dimensional data volume comprises:
• splitting the data volume along an x-axis, a y-axis, and a z-axis into three portions;
• applying the 2D F-K filter to each portion of the three portions;
• and
• summing the three portions for generation of the diffraction-enhanced seismic image.

One or more non-transitory computer readable media storing instructions that, when executed by at least one processing device, are configured to cause the at least one processing device to perform operations for seismic imaging of a subterranean geological formation, the operations comprising:

• obtaining seismic data comprising a data volume representing a post-stacked image;
• applying a frequency-wavenumber (F-K) filter to the data volume extract a negative-dip structure image;
• applying the frequency-wavenumber (F-K) filter to the data volume extract a positive-dip structure image,
• wherein the F-K filter comprises a two dimensional (2D) F-K filter;
• iteratively applying the 2D F-K filter to a plurality of slices of a three dimensional data volume;
• multiplying the positive-dip structure image with the negative-dip structure image to generate a component image;
• and
• generating, based on the generated component image, a diffraction-enhanced seismic image representing a geological formation of the data volume;
• wherein iteratively applying the 2D F-K filter to a plurality of slices of a three dimensional data volume comprises:
• splitting the data volume along an x-axis, a y-axis, and a z-axis into three portions;
• applying the 2D F-K filter to each portion of the three portions;
• and
• summing the three portions for generation of the diffraction-enhanced seismic image.