US 12,461,264 B1
System and method for enhancing seismic data resolution by transforming low-frequency seismic data to high-frequency seismic data
Sherif Mohamed Hanafy Mahmoud, Dhahran (SA)
Assigned to KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed by KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed on Apr. 17, 2025, as Appl. No. 19/182,499.
Int. Cl. G01V 1/34 (2006.01); G01V 1/36 (2006.01)
CPC G01V 1/345 (2013.01) 20 Claims
OG exemplary drawing
 
1. A method for generating synthetic high frequency seismic data, comprising:
injecting, by a seismic source, a first seismic shot having a low frequency into a surface region under investigation;
receiving, by a plurality of seismic receivers, a plurality of waves reflected from geological interfaces below the surface region due to the first seismic shot;
generating, by each of the plurality of seismic receivers, seismic traces from the reflected waves due to the first seismic shot;
recording, by a recorder operatively connected to each of the plurality of seismic receivers, the seismic traces of the first seismic shot;
injecting, by the seismic source, a second seismic shot having a high frequency into the surface region under investigation;
receiving, by the plurality of seismic receivers, a sparse number of the reflected waves due to the second seismic shot;
generating, by each of the plurality of seismic receivers, a sparse number of seismic traces from the sparse number of reflected waves due to the second seismic shot;
recording, by the recorder, the sparse number of seismic traces of the second seismic shot;
receiving, by a computing device operably connected to the recorder, wherein the computing device includes a communications unit, electrical circuitry, a memory having program instructions and at least one processor configured to execute the program instructions, the seismic traces of the first seismic shot and the sparse number of seismic traces of the second seismic shot,
wherein executing, by the processor, the program instructions includes performing steps of:
combining the seismic traces of the reflected waves due to the first seismic shot into a low frequency seismic shot gather;
combining the sparse number of seismic traces of the second seismic shot into a sparse high frequency common receiver gather;
generating a sparse low frequency common receiver gather by resampling the low frequency common receiver gather to match a number of samples per seismic trace of the low frequency common receiver gather to a number of samples per seismic trace of the sparse high frequency common receiver gather;
calculating a 1D local matching filter;
generating a dataset of simulated high frequency traces by converting the traces of the sparse low frequency common receiver gather into high frequency traces by applying the 1D local matching filter to the traces of the sparse low frequency common receiver gather; and
generating, on a display connected to the computing device, a high-resolution subsurface image of the geological interfaces below the surface region from the dataset of simulated high frequency traces.