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Flexible Pipe
What is Flexible Pipe?
Unbonded flexible pipes consist of concentric layers of metallic wires,
tapes and extruded polymers designed to form a structure that
addresses the specific environmental requirements and characteristics
of the transported fluids.
Flexible Pipe Construction
Regarding Aplication
– Risers : Static or Dynamic Application
– Flowlines : Static Application
Regarding the Internal Fluid
– Smooth bore : Water Injection
– Rough Bore : Oil and Gas
Regarding H2S presence
– Sweet service : with H2S
– Sour service : without H2S
Flexible Pipe Construction
Flexible pipe is a technically challenging, multi-layer structure of
helically wound metallic wires and tapes and extruded thermoplastics
– Risers : Static or Dynamic Application
– Flowlines : Static Application
Regarding the Internal Fluid
– Smooth bore : Water Injection
– Rough Bore : Oil and Gas
Regarding H2S presence
– Sweet service : with H2S
– Sour service : without H2S
Flexible Pipe Standards
API 17J - Specification for Unbonded Flexible Pipe Petrobras NI-2409-A - Flexible Pipe Specification - 2003
– Must be in compliance on all Petrobras Projects.
API 17J - Specification for Unbonded Flexible Pipe Petrobras NI-2409-A - Flexible Pipe Specification - 2003
– Must be in compliance on all Petrobras Projects.
ISO 13628 - Petroleum natural gas industries - Drilling and
production equipment - Design and operation of subsea system-
Part 2: Flexible pipe systems for subsea and marine applications.
Bureau Veritas NI 364 DTO ROO E - Non-bonded Flexible Steel Pipes used as Flowlines
DNV Rules for Flexible Pipe
Other oil company specifications
–- ALL SUPERSEDED BY API 17J
RP17B - Recommended Practice for Unbonded Flexible Pipe (sister document to API 17J)
References : "Introduction to Unbonded Flexible Pipe Design and Manufacturing" www.lem.ep.usp.br/pef418/wellstream.pdf
Bureau Veritas NI 364 DTO ROO E - Non-bonded Flexible Steel Pipes used as Flowlines
DNV Rules for Flexible Pipe
Other oil company specifications
–- ALL SUPERSEDED BY API 17J
RP17B - Recommended Practice for Unbonded Flexible Pipe (sister document to API 17J)
References : "Introduction to Unbonded Flexible Pipe Design and Manufacturing" www.lem.ep.usp.br/pef418/wellstream.pdf
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