US 12,000,971 B2
Method and system for seismic processing using virtual trace bins based on offset attributes and azimuthal attributes
Daniele Colombo, Dhahran (SA); Ernesto Sandoval-Curiel, Dhahran (SA); Diego Rovetta, Delft (NL); and Apostolos Kontakis, Delft (NL)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Jan. 12, 2022, as Appl. No. 17/647,799.
Claims priority of application No. 20210100866 (GR), filed on Dec. 10, 2021.
Prior Publication US 2023/0184972 A1, Jun. 15, 2023
Int. Cl. G01V 1/28 (2006.01); G01V 1/00 (2006.01); G01V 1/30 (2006.01)
CPC G01V 1/282 (2013.01) [G01V 1/003 (2013.01); G01V 1/306 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method, comprising:
obtaining, by a computer processor, a plurality of seismic traces for a geological region of interest;
determining, by the computer processor, a first offset attribute, a second offset attribute, a first azimuthal attribute, and a second azimuthal attribute;
determining, by the computer processor and using the first offset attribute and the first azimuthal attribute, a first virtual trace bin for the geological region of interest;
determining, by the computer processor and using the second offset attribute and the second azimuthal attribute, a second virtual trace bin for the geological region of interest,
wherein the first azimuthal attribute and the second azimuthal attribute are different,
wherein the first virtual trace bin and the second virtual trace bin comprise an overlapping bin region that comprises a plurality of overlapping traces among the plurality of seismic traces that are disposed in the first virtual trace bin and the second virtual trace bin, and
wherein the first virtual trace bin comprises a first subset of the plurality of seismic traces that are not disposed in the second virtual trace bin;
determining, by the computer processor, a plurality of ray parameters for the first virtual trace bin, wherein a respective ray parameter among the plurality of ray parameters corresponds to a respective seismic trace in the first virtual trace bin;
determining, by the computer processor, a plurality of adjusted seismic traces using a linear Radon transform, the plurality of ray parameters, the first subset of the plurality of seismic traces, and the plurality of overlapping traces;
generating, by the computer processor, a first virtual trace using the plurality of adjusted seismic traces;
generating, by the computer processor, a second virtual trace using the plurality of overlapping traces and a second subset of the plurality of seismic traces corresponding to the second virtual trace bin;
generating, by the computer processor, a velocity model for the geological region of interest using a virtual shot gather comprising the first virtual trace, the second virtual trace, and a plurality of virtual traces, wherein a respective virtual trace among the plurality of virtual traces corresponds to a respective virtual trace bin among a plurality of virtual trace bins;
generating, by the computer processor, a seismic image of the geological region of interest using the velocity model; and
determining, by the computer processor and using the seismic image, a presence of hydrocarbons within the geological region of interest.