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
Surface Casing
A large-diameter, relatively low-pressure pipe string set in shallow yet competent formations to protect fresh-water aquifers onshore. Second, the surface casing provides minimal pressure integrity, and thus enables a diverter or perhaps even a blowout preventer (BOP) to be attached to the top of the surface casing string after it is successfully cemented in place. Third, the surface casing provides structural strength so that the remaining casing strings may be suspended at the top and inside of the surface casing.
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