heavyweight drillpipe | Energy Glossary

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heavyweight drillpipe

1. n. [Drilling]

A type of drillpipe whose walls are thicker and collars are longer than conventional drillpipe. HWDP tends to be stronger and has higher tensile strength than conventional drillpipe, so it is placed near the top of a long drillstring for additional support.

Alternate Form: HWDP

See: collardrillstring