Definition(s)
Isotope
Atoms with the same atomic number (same chemical element) but different atomic weights.
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
Atoms with the same atomic number (same chemical element) but different atomic weights.
Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards