US 12,297,733 B2
Azimuthal scanning of a wellbore for determination of a cement-bond condition and for detecting/locating a leak source
Ruijia Wang, Singapore (SG); Yao Ge, Singapore (SG); Jing Jin, Singapore (SG); and Xiang Wu, Singapore (SG)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Jun. 18, 2020, as Appl. No. 16/905,416.
Prior Publication US 2021/0396126 A1, Dec. 23, 2021
Int. Cl. E21B 47/005 (2012.01); E21B 47/0228 (2012.01); E21B 47/13 (2012.01)
CPC E21B 47/005 (2020.05) [E21B 47/0228 (2020.05); E21B 47/13 (2020.05)] 20 Claims
OG exemplary drawing
 
8. A downhole tool disposable within a borehole, comprising:
a source rotatable to a plurality of source azimuthal angles;
a plurality of receivers, wherein the plurality of receivers are digitally rotatable to obtain 360 degrees of coverage of the borehole at one or more receiver azimuthal angles, wherein the plurality of receivers receive one or more signals from the source at each of the one or more receiver azimuthal angles, wherein the plurality of receivers comprise one or more monopole receivers and one or more multipole receivers, and wherein the one or more monopole receivers receive the one or more signals as one or more monopole measurements and the one or more multipole receivers receive the one or more signals as one or more multipole measurements; and
a memory coupled to the plurality of receivers, wherein the memory stores one or more amplitudes associated with the one or more signals from the source at each of the one or more receiver azimuthal angles, wherein the memory stores a weighted sum of the one or more signals received at the plurality of receivers rotated to a first receiver azimuthal angle of the one or more receiver azimuthal angles; wherein the one or more amplitudes comprise one or more amplitudes of the weighted sum of the one or more signals; and wherein a cement-bond condition associated with a casing of the borehole is determinable using the one or more amplitudes.