US 11,947,063 B2
Method of conditioning seismic data for first-break picking using nonlinear beamforming
Yong Qing Chen, Dhahran (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Apr. 28, 2022, as Appl. No. 17/731,571.
Prior Publication US 2023/0350090 A1, Nov. 2, 2023
Int. Cl. G01V 1/34 (2006.01); G01V 1/28 (2006.01)
CPC G01V 1/345 (2013.01) [G01V 1/282 (2013.01); G01V 2210/1295 (2013.01); G01V 2210/1425 (2013.01); G01V 2210/74 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
obtaining a pre-stack seismic dataset, wherein the pre-stack seismic dataset comprises a plurality of pre-stack traces;
generating, using a computer processor, a pre-processed seismic dataset and an initial refraction velocity model, based, at least in part, on the pre-stack seismic dataset;
generating, using the computer processor, a first-break energy-enhanced seismic dataset using nonlinear beamforming based, at least in part, on the pre-processed seismic dataset and the initial refraction velocity model;
estimating, using the computer processor, a refined refraction velocity model based, at least in part, on the first-break energy-enhanced seismic dataset;
generating, using the computer processor, a post-processed seismic dataset based, at least in part, on the refined refraction velocity model and the first-break energy-enhanced seismic dataset;
determining, using the computer processor, a first-break time for each pre-stack trace based, at least in part, on the refined refraction velocity model and the post-processed seismic dataset;
generating, using the computer processor, a seismic image based, at least in part, on the first-break time for each pre-stack trace; and
determining a location of a hydrocarbon reservoir based, at least in part, on the seismic image.