Assessing the integrity of the cement layer and the quality of its bond to the casing and
formation is paramount to ensure that the wellbore is hydraulically isolated from the …

In oil wells, adequate cementation is essential to guarantee that the well has support for the
casing and is able to isolate the well from groundwater. Operations known as Plugging & …

Aspects of the present disclosure relate to earth modeling using machine learning. A method
includes receiving detected data at a first depth point along a wellbore, providing at least a …

Presently, prior to plug & abandonment (P&A) operations, inspection of cement quality
executed through acoustic logging techniques requires the removal of the production tubing …

A sonic tool is activated in a well having multiple casings and annuli surrounding the casing.
Detected data is preprocessed using slowness time coherence (STC) processing to obtain …

Real-time scene understanding system employing an object detection module with an
algorithm for localization and classification of objects in an image, and a semantic seg …

Deliberative systems and the Brazilian Civil Rights Framework for the Internet: democratic
and epistemic contributions of online public consultations. Rio de Janeiro, 2020. 262p Tese …