	US 12,422,583 B2
	Characterization system and method for casing loading using entropy analysis
Baoyan Li, Houston, TX (US); Elan Yogeswaren, Houston, TX (US); Dalila Balmaceda, Katy, TX (US); Wei Han, Houston, TX (US); Roger Steinsiek, Houston, TX (US); Joseph Olaiya, Houston, TX (US); Marc Ramirez, Houston, TX (US); and Sushant Dutta, Sugar Land, TX (US)
Assigned to Baker Hughes Oilfield Operations LLC, Houston, TX (US)
Filed by Baker Hughes Oilfield Operations LLC, Houston, TX (US)
Filed on Oct. 18, 2022, as Appl. No. 17/968,427.
Prior Publication US 2024/0125965 A1, Apr. 18, 2024
Int. Cl. G01V 1/50 (2006.01); E21B 47/005 (2012.01)

CPC G01V 1/50 (2013.01) [E21B 47/005 (2020.05); G01V 2210/1299 (2013.01); G01V 2210/1429 (2013.01); G01V 2210/60 (2013.01)]

20 Claims

1. A well inspection method, comprising:

transmitting an acoustic signal from a well inspection tool into a casing structure;

receiving return signals from the casing structure using the well inspection tool;

performing, using at least one processor associated with the well inspection tool, a Fast Fourier Transform (FFT) on the return signals to generate spectrogram data;

determining entropy spectra from the spectrogram data; and

determining casing loadings associated with the casing structure based at least in part on the entropy spectra.