Drilling Industry Glossary
salt content water phase
sand content
sandfrac
scratcher
seismograph
set casing
shoe track (ST)
shut-in bottomhole pressure (SIBHP)
side tracking
single slurry
sinusoidal buckling
SK
slack-off weight
slim hole drilling
slip velocity
slips
sloughing
slurry
slurry yield
snubbing
solids
solids adjusted for salt
soluble solids
spacer
spaghetti
specific gravity
spud or spudding in
spud date
stabilizer
stand (of pipe)
string
structure
stuck pipe
substructure
surface casing
survey
sustained casing pressure (SCP)
swabbing
sweeps
Sustained Casing Pressure (SCP)
SCP is excessive casing pressures in wells that persistently rebuilds after bleed-down. SCP is caused by gas migration from a high-pressured subsurface formation through the leaking cement sheath in one of the well’s casing annuli. It may also be caused by defect and leaking tubing connections, downhole accessories or wellhead seals
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