Definition(s)
Ultrasonic
Having a frequency above the audible range, i.e. above 20 kHz.
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
Having a frequency above the audible range, i.e. above 20 kHz.
Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards