I N N O V AT I O N S • J A N U A R Y - M A R C H 2 0 1 4
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Wye Isolate
NEED:
Isolate for Wye Spool Installation
REGION:
Gulf of Mexico
SIZE:
30” pipeline
PRESSURE:
900 psi
PIPE PRODUCT:
Natural gas
LENGTH:
~300 meters (1000 feet)
SERVICES:
Subsea Isolation
PIGGING MEDIUM:
Monoethylene
glycol (MEG)
An offshore operator in the Gulf of
Mexico needed to isolate a riser to
allow for installation of a wye spool. The
riser presented unique challenges as it
was constructed with a number of tight
bends. The operator chose to use TDW’s
SmartPlug® isolation tool. TDW first
conducted a piggability and positioning
study by running a specially modified
gauging tool. Results confirmed that the
SmartPlug® tool was suitable for both
the pipe topology and the temporary
receiver. The isolation and installation
were successfully completed.
INDONESIA
MEXICO
CANADA
Blackout 9,000,000
In Fall 2013,
Pertamina EP
faced a daunting task in the northwest
Java Sea. Since 1997 its Lima Flow Station had been slowly
sinking into the seabed. As part of the Lima Subsidence
Remediation Project, Pertamina EP sought to safely raise
the platform. To accomplish this momentous task, without
cutting the gas flow providing power to millions of Jakarta
citizens, a complex series of bypasses were required. TDW was
engaged to isolate the affected subsea lines so the temporary
bypasses could be installed and flow could continue
throughout the operation.
>>
High-class 30”
Initially owing to regulator-driven class
upgrades, and compounded by the
discovery of stress corrosion cracking,
a major Canadian operator recently
completed the replacement of 900 feet
(274 meters) of a 30” main gas artery in
Quebec. To help facilitate the replacement
and requisite 24” multiple bypasses, TDW
installed four STOPPLE® Train systems
in two tandem setups, ensuring zero gas
leakage and maximum operational safety
for workers throughout the project.
Global
Perspective
