COFLEXIP & Services Inc.
As with rigid pipe. the pipeline
can be protected by check valves
and a safety joint. Three major oil
companies are now' using Coflexip
very successfully for mudslide
protection in the Gulf of Mexico.
A major oil company recently
protector in South Pass Block 49
off Louisiana, a very bad mudslide
area. Slides here reach as far as
30 feet above and 70 below the
normal mudline and cover a wide
area in the horizontal plane.
In this installation. 1,000 feet
of Coflexip 10-inch I.D., 1.440-psi
line was laid out in an "S"
configuration, spanning a distance
of 200 feet from the base of the
jacket to the end of the rigid
Coflexip designed a special
end fitting so the line could be
pulled through the platform's 16-
inch "1" tube. After the line was
pulled through, the pulling head
was cut off of the end fitting and a
standard 10-inch ANSI flange was
Flexible pipe for interplatform
Quite often, high-
pressure lines are needed above
sea level between two platforms or
allowances for relative movement.
There are two common solutions-
ordinary pipe with swivel joints or
large-diameter loops of rigid pipe.
Coflexip has a better solution.
Flexible jumper lines are easily
installed with a flange at each end.
They have a minimum pressure
drop, and virtually no maintenance
resistance. less erosion, and
fewer places for leaks to develop.
employing Coflexip jumper lines
extensively in the Gulf of Mexico.
Because of the flexible pipe's
unique properties it has proven
less vulnerable to damage by wind
New production economics
The easy installation and recovery
of Coflexip flowlines open up
several profitable new alternatives.
Temporary production systems for
Coflexip flowlines are not only
easy to lay, they are easy to
retrieve. After a well has played
out, the Coflexip flowline can be
reeled back onto a workboat and
used on another well.
instead of just one.
This way the net cost of a flowline
system is reduced even further
and many marginal fields become
Early, production systems
fraction of the installation time
needed by rigid pipe. They can
often go in earlier, too; sometimes
months earlier because they can
be ordered from stock and laid
This makes possible rapid partial
production in a field that would
come on stream at a later date.
Result: early cash flow.
Other production applications
Coflexip flexible pipe is also used
as vent and flare lines, and
pipeline expansion joints. Its
combination of flexibility, strength,
maintenance gives it an edge over
Coflexip flowlines have been used for temporary production systems in the Gulf of
Mexico to provide early production and cash flow.