US 12,078,052 B2
Tubing eccentricity evaluation using acoustic signals
Brenno Caetano Troca Cabella, Rio de Janeiro (BR); Xiang Wu, Singapore (SG); Marco Aurelio Luzio, Rio de Janeiro (BR); Pablo Vieira Rego, Rio de Janeiro (BR); Chung Chang, Houston, TX (US); Federico Combis Lucas, Houston, TX (US); Yao Ge, Singapore (SG); Ruijia Wang, Singapore (SG); and Ho Yin Ma, Singapore (SG)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Dec. 6, 2021, as Appl. No. 17/543,130.
Prior Publication US 2023/0175391 A1, Jun. 8, 2023
Int. Cl. E21B 47/085 (2012.01); E21B 47/095 (2012.01); E21B 47/16 (2006.01)
CPC E21B 47/085 (2020.05) [E21B 47/095 (2020.05); E21B 47/16 (2013.01); E21B 2200/22 (2020.05)] 23 Claims
OG exemplary drawing
 
1. A method to determine eccentricity of a tubing within a borehole, comprising:
collecting acoustic data from an acoustic system located within the borehole, wherein the acoustic data is collected at more than one azimuthal position at a borehole location;
generating transformed acoustic data by applying a fast Fourier transformation (FFT) filter to the acoustic data;
calculating a central value of the transformed acoustic data;
identifying a tubing arrival time using the central value and the transformed acoustic data, wherein the tubing arrival time relates to the acoustic data and the tubing;
determining a symmetry of axis for the transformed acoustic data;
calculating an eccentricity direction of the tubing using the symmetry of axis, and the transformed acoustic data;
identifying an earliest casing arrival time utilizing the transformed acoustic data;
computing an eccentricity magnitude of the tubing utilizing the transformed acoustic data, received input parameters, the tubing arrival time, and the earliest casing arrival time, using the acoustic analyzer; and
performing a corrective action on the tubing based on the eccentricity magnitude, wherein the corrective action includes replacing a section of the tubing or adjusting a position of the tubing in order to improve cement evaluation, or prevent or reduce wear on the tubing or casing within the borehole.