Definition(s)
Back-Wall Reflection
Ultrasonic signal received from the back surface of the pipe wall.
Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards
Oil & Gas Drilling Glossary - IADCLexicon.org
Ultrasonic signal received from the back surface of the pipe wall.
Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards