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
Dogleg Severity (DLS)
This is a measure of the rate of change of direction of the wellpath. Usually this is measured in (1) degrees per 100 feet; (2) degrees per 30 meters; (3) degrees per 30 feet; and/or (4) degrees per 10 meters. The interval usually reflects the spacing in a directional survey station.
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