Definition(s)
MWD
Measuring while drilling.
Source: API RP 7G-2, Recommended Practice for Inspection and Classification of Used Drill Stem Elements, First Edition, August 2009. Global Standards
Source: Deepwater Well Control Guidelines. IADC Guidelines
MWD/LWD
Management while drilling / logging while drilling.
Source: OGP Report No. 476, Recommendations for enhancements to well control training, examination and certification, International Association of Oil & Gas Producers, October 2012. Global Standards
MWD
Measurement While Drilling.
Source: NOGEPA Industrial Guideline No. 41, Well Construction Process Checklist, Drilling Best Practices, Netherlands, Version 0, December 2011. Global Standards
Source: NORSOK D-001, Drilling facilities, Rev. 3, December 2012. Global Standards