Scale Inhibitors prevent
further scale buildup of the metal or plastic piping and equipment in
the oilfield. Some crude oils with high levels of scale that pipeline
plugging occur during only a few weeks of actual
If scaling in the oilfield
is not addressed, the reduced production can actually kill a well.
Usually, low levels of scale inhibitors (20 ppm to
500 ppm) are continuously injected or batched to prevent or limit
scaling of this equipment.
The following diagram
displays the effectiveness of a production line with, and without a
scale inhibitor that is mixed with produced fluid.
The untreated (top) line has
a buildup of scale which eventually causes the line to plug.
Because of the lower cross-sectional diameter and increased surface
roughness, production rates decrease and stop.
A line treated with a
Corrosion Inhibitor prevents scale from attaching to the line. This action inhibits
the scale from having large concentrations to precipitate from the
produced fluids. This maintains a scale free produced fluid to
Eugene for more information.