IDENTIFYING AN ANOMALY IN A CEMENT LAYER OF A WELLBORE USING DIMENSIONALITY REDUCTION

Abstract: an anomaly in a cement layer of a wellbore can be identified by applying dimensionality reduction to acoustic data of the wellbore. for example, a computing system can receive the acoustic data from a downhole tool deployed downhole in the wellbore using a tool string positioned within a casing string of the wellbore. the computing system can decrease a number of dimensions associated with the acoustic data to generate a dimension-reduced dataset including a predetermined dimensionality. subsequently, the computing system can analyze the dimension-reduced dataset to determine a likelihood of the anomaly being present in the cement layer of the wellbore. the computing system can output, via a user interface, a cement map based on the dimension-reduced dataset. the cement map can indicate a presence of the anomaly in the cement layer of the wellbore for use in adjusting a wellbore operation.

Inventor(s): Brenno Caetano Troca Cabella, Ruijia Wang, Yao Ge, Frederico Heloui de Araujo, Otto Fanini, Xiang Wu

CPC Classification: E21B47/005 (Monitoring or checking of cementation quality or level)

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