Overview
Cased pipe is usually a
buried system composed of
a coated or wrapped carrier
pipe that is evenly suspended
within in a larger diameter pipe
(casing). These systems are
designed to provide structural protection against carrier pipe damage,
ruptures and external corrosion. They also, however, present a real
challenge to those charged with monitoring their integrity.
Corrosion conditions can develop within the cased pipe environment that
can negatively affect the carrier pipe's integrity. Anomalies caused by
external corrosion are difficult to predict and identify on pipe inside
casings and are becoming increasingly common in aging pipeline
systems.
Companies that are focused on protecting people, the environment, and
profitability, actively pursue a regulatory compliant program that identifies
corrosion
Profile Technologies' EMW-C™ technology is ideal for identifying
pre-corrosion and corrosion conditions in cased pipe systems:
1. Electromagnetic waves are launched into the annular space between
the casing and carrier pipe.
2. Reflections from anomalous conditions such as water, corrosion,
pipe-to-casing shorts and foreign materials show up as specific
reflection curves in the processed data.
3. Anomalies are identified and located along the length of the cased
region.
4. Depending upon the system configuration, Profile can normally
inspect an entire casing in 90 minutes and several casings per day.
5. Finally, above-ground leads are installed to permanent pipe and
casing connectors so that all future regulatory required monitoring
can be accomplished without excavation.
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