Patent ID: 11965411
Assignee: PIPELINES 2 DATA (P2D) LIMITED
Field: Measurement (Instruments)
Classification: CPC E  G | IPC E  G

Claim 12:
13. A method for isolation detection in a wellbore, the method comprising:
obtaining an axial acoustic signal, the axial acoustic signal captured using an axial sensor deployed in a structure in a subterranean surface;
determining a first velocity of a first waveform included in the axial acoustic signal, and a second velocity of a second waveform included in the axial acoustic signal;
separating the axial acoustic signal into a first wave region and a second wave region by applying velocity filtering to the first velocity and the second velocity;
determining an axial symmetry of a portion of the structure based on at least one of the first wave region or the second wave region;
determining a radial symmetry of the portion of the structure based on at least a radial acoustic signal; and
generating an isolation characterization for the portion of the structure based on both the axial symmetry and the radial symmetry.