Drilling Industry Glossary
daily drilling report
density hierarchy
derrick
derrickhand
diamond bit
differential pressure
differential survey
directional drilling
directional drilling software
displacement fluid
doghouse
dogleg
dogleg severity
donkey pump
doughnut
downhole motor
downtime
draw works
drill collars
drill collar sub
drill pipe
drill stem
drill stem test
drill string
drillers
drilling engineering design
drilling fluid
drilling foreman
dry hole
dual completion
dutchman
Dual Completion
Completion of a well in which two separate formations may be produced at the same time. Production from each zone is segregated by running two tubing strings with packers, or running one tubing string with a packer and producing the other zone through the annulus.
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