Drilling Industry Glossary
daily drilling report
density hierarchy
diamond bit
differential pressure
differential survey
directional drilling
directional drilling software
displacement fluid
doghouse
dogleg
dogleg severity
donkey pump
doughnut
downhole motor
draw works
drill collars
drill collar sub
drilling engineering design
drilling fluid
drill pipe
drill stem
drill string
dry hole
dutchman
Downhole Motor
Multistage turbine driven by the mud flowing through the drillstring. This unit, which powers the rotary drill bit, is usually located immediately above the bit.
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