Drilling Industry Glossary
waiting on cement (WOC)
water
water activity
water phase salinity
water table
weight indicator
weight on bit (WOB)
well logging
well planning
wellbore
wellpath map
whip stock
wild cat
workover
worm or weavel
Whipstock
A whipstock is a curved steel wedge that is put into the borehole to deflect the bit from the original borehole at a slight angle for controlled directional drilling, for straightening crooked holes, and for sidetracking in or to bypass an unretrieved fish.
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