US 12,140,720 B2
Beamform processing for sonic imaging using monopole and dipole sources
Nobuyasu Hirabayashi, Sugar Land, TX (US); Yevgeniy Karpekin, Sugar Land, TX (US); Nicholas Norman Bennett, Hamden, CT (US); John Adam Donald, Dubai (AE); Asbjoern Lund Johansen, Houston, TX (US); and Takeshi Endo, Houston, TX (US)
Assigned to Schlumberger Technology Corporation, Sugar Land, TX (US)
Appl. No. 17/995,170
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
PCT Filed Mar. 30, 2021, PCT No. PCT/US2021/024959
§ 371(c)(1), (2) Date Sep. 30, 2022,
PCT Pub. No. WO2021/202582, PCT Pub. Date Oct. 7, 2021.
Claims priority of provisional application 63/002,976, filed on Mar. 31, 2020.
Prior Publication US 2023/0221453 A1, Jul. 13, 2023
Int. Cl. G01V 1/36 (2006.01); G01V 1/46 (2006.01); G01V 1/50 (2006.01)
CPC G01V 1/362 (2013.01) [G01V 1/366 (2013.01); G01V 1/46 (2013.01); G01V 1/50 (2013.01); G01V 2210/1299 (2013.01); G01V 2210/21 (2013.01); G01V 2210/51 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for processing of a sonic monopole waveform, comprising:
obtaining a beamform stack of the sonic monopole waveform to produce a first result;
performing a band-pass filtering on the first result to produce a second result;
performing an adaptive interference canceler filtering on the second result to produce a third result;
performing a median filtering on one of the third result to produce a fourth result; and
performing a coherency filtering on the fourth result to produce a final processing of the sonic monopole waveform.