Definition(s)
Longitudinal Magnetic Field
Magnetic field which runs substantially parallel to the axis of the OCTG.
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
Magnetic field which runs substantially parallel to the axis of the OCTG.
Source: API RP 5A5, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, Reaffirmed August 2010. Global Standards