US 12,436,307 B2
Method and apparatus for implementing a high-resolution seismic pseudo-reflectivity image
Li Jiang, Katy, TX (US)
Assigned to BP Corporation North America Inc., Houston, TX (US)
Filed by BP Corporation North America Inc., Houston, TX (US)
Filed on Oct. 5, 2022, as Appl. No. 17/960,186.
Claims priority of provisional application 63/252,675, filed on Oct. 6, 2021.
Prior Publication US 2023/0103668 A1, Apr. 6, 2023
Int. Cl. G01V 1/30 (2006.01); G01V 1/137 (2006.01); G01V 1/18 (2006.01); G01V 1/28 (2006.01); G01V 1/38 (2006.01)
CPC G01V 1/306 (2013.01) [G01V 1/137 (2013.01); G01V 1/186 (2013.01); G01V 1/282 (2013.01); G01V 1/3843 (2013.01); G01V 2210/1212 (2013.01); G01V 2210/1423 (2013.01); G01V 2210/6222 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A method for generating a high-resolution pseudo-reflectivity image of a subsurface region, the method comprising:
(a) receiving seismic data associated with a subsurface region and captured by one or more seismic receivers;
(b) constructing a velocity model of the subsurface region based on the received seismic data;
(c) performing a seismic migration of the received seismic data based on the constructed velocity model to obtain migrated seismic data;
(d) computing normal vectors associated with one or more subsurface reflectors of the subsurface region based on the migrated seismic data;
(e) computing a velocity gradient associated with the subsurface region based on the constructed velocity model; and
(f) generating a pseudo-reflectivity image of the subsurface region based on both the computed normal vectors and the computed velocity gradient.