Definition(s)
Non-Essential Variable
Variable parameter in which a change may be made in the WPS without re-qualification.
Source: API SPEC 5DP, Specification for Drill Pipe, First Edition, August 2009. Global Standards
Oil & Gas Drilling Glossary - IADCLexicon.org
Variable parameter in which a change may be made in the WPS without re-qualification.
Source: API SPEC 5DP, Specification for Drill Pipe, First Edition, August 2009. Global Standards