
159
E
Estuaries
Erosion Corrosion: Corrosion acceleration by passage of a high-velocity ow
or impingement of solids. May remove the thin, protective oxide lm that
protects exposed metal surface.
Erosion/Scour: The removal or dissolution of parts of the seabed by bot-
tom currents, particularly those by storms. Transportation by currents of the
removed material can result in signicant movement of masses of sand, silt,
and mud on the seaoor. This migration of sediment can “strand” drilling
platform supports or wellhead plumbing by erosion of the surrounding sup-
port sediments.
ERW: See Extended reach well.
Escalator Clause: A clause in ...