Explore the new Oilfield Glossary

Look up terms beginning with:

sub

1. n. [Drilling]

Any small component of the drillstring, such as a short drill collar or a thread crossover.

See: bit breakerdrill collarjunk basket

2. n. [Drilling]

Slang for substructure, which is the part of the rig that supports the derrick, rig floor and associated equipment.

See: derrickrig floor

Share This