Method and system for determining attenuated seismic time

A system, comprising:

• a network comprising a plurality of parallel processors;
• and
• a seismic interpreter comprising a computer processor, wherein the seismic interpreter is coupled to the network, the seismic interpreter comprising functionality for:
• obtaining first seismic data based on a seismic survey regarding a geological region of interest;
• obtaining grid data based on the geological region of interest,
• wherein the grid data comprises a plurality of grid nodes disposed between a respective seismic source among a plurality of seismic sources and a respective seismic receiver among a plurality of seismic receivers, and
• wherein the first seismic data corresponds to a seismic survey based on the plurality of seismic sources and the plurality of seismic receivers;
• determining a plurality of travel times using the first seismic data, the grid data, an Eikonal function, and a velocity model for the geological region of interest;
• determining a plurality of attenuated travel times using the plurality of travel times, the grid data, and a forward modeling function comprising a plurality of gradient components;
• determining, using the plurality of parallel processors, a plurality of updated attenuated travel times using the plurality of attenuated travel times, the grid data, the forward modeling function, and a fast sweeping method, wherein the fast sweeping method comprises a plurality of alternating sweeps of the grid data using the forward modeling function;
• and
• generating an attenuation model of the geological region of interest using the plurality of updated attenuated travel times.

A non-transitory computer readable medium storing instructions executable by a computer processor, the instructions comprising functionality for:

• obtaining first seismic data based on a seismic survey regarding a geological region of interest;
• obtaining grid data based on the geological region of interest,
• wherein the grid data comprises a plurality of grid nodes disposed between a respective seismic source among a plurality of seismic sources and a respective seismic receiver among a plurality of seismic receivers, and
• wherein the first seismic data corresponds to a seismic survey based on the plurality of seismic sources and the plurality of seismic receivers;
• determining a plurality of travel times using the first seismic data, the grid data, an Eikonal function, and a velocity model for the geological region of interest;
• determining a plurality of attenuated travel times using the plurality of travel times, the grid data, and a forward modeling function comprising a plurality of gradient components;
• determining a plurality of updated attenuated travel times using the plurality of attenuated travel times, the grid data, the forward modeling function, and a fast sweeping method, wherein the fast sweeping method comprises a plurality of alternating sweeps of the grid data using the forward modeling function;
• and
• generating an attenuation model of the geological region of interest using the plurality of updated attenuated travel times.