US 12,204,060 B2
Full-wavefield angle gather for high-contrast inter thin-bed models
Jianhua Yu, Houston, TX (US); and Yilong Qin, Katy, TX (US)
Assigned to CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing (CN)
Filed by CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing (CN)
Filed on Dec. 12, 2022, as Appl. No. 18/064,414.
Claims priority of provisional application 63/288,303, filed on Dec. 10, 2021.
Prior Publication US 2023/0184982 A1, Jun. 15, 2023
Int. Cl. G01V 1/50 (2006.01)
CPC G01V 1/50 (2013.01) [G01V 2210/6169 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for generating a full-wavefield angle gather in high-contrast inter thin-bed models for reservoir characterizations of a survey region, the method comprising:
positioning a well logging tool including one or more sonic generators and one or more well log data recording sensors in a wellbore;
generating sound waves, using the one or more sonic generators, to generate reflections in the survey region;
receiving well log data based on the reflections using the one or more well log data recording sensors, transmitting the well log data to at least one memory, and storing the well log data in the at least one memory;
generating, by a computer system, a full-wavefield angle gather;
generating, by the computer system, the high-contrast inter thin-bed models based on the full-wavefield angle gather; and
displaying one or more images of the high-contrast inter thin-bed models based on the full-wavefield angle gather,
wherein generating, by the computer system, the full-wavefield angle gather further comprises:
generating a full-wavefield tau-p gather using Kennett modeling;
generating tau-p gather without one or more multiples and/or without one or more Primary-Secondary-Primary (PSP) converted waves; and
generating tau-p gather with only one or more multiples and/or one or more PSP converted waves by subtracting the tau-p gather without one or more multiples and/or without one or more PSP converted waves from the full-wavefield tau-p gather.