Petroleum Acronyms

OIL & GAS GLOSSARY

Drilling & Wells

NPD

Definition

Non Productive Time

npd means Non Productive Time. ... during drilling and completions operations

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NPRI

Non-Participating Royalty Interest

NGPA

Natural Gas Policy Act

TCPD

Tubing Conveyed Perforating Device

ZLD

Zero Liquid Discharge

TNDT

Tubing Non-Destructive Test