Drilling Industry Glossary
salt content water phase
sand content
shoe track (ST)
shut-in bottomhole pressure (SIBHP)
single slurry
sinusoidal buckling
SK
slack-off weight
slips
slip velocity
slurry
slurry yield
snubbing
solids
solids adjusted for salt
soluble solids
spacer
spaghetti
spud date
stand (of pipe)
surface casing
survey
sustained casing pressure (SCP)
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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