Subsea Expo Conference 2017 Springboard session EHTF v1 · 2017. 2. 6. · EHTF system performance...
Transcript of Subsea Expo Conference 2017 Springboard session EHTF v1 · 2017. 2. 6. · EHTF system performance...
![Page 1: Subsea Expo Conference 2017 Springboard session EHTF v1 · 2017. 2. 6. · EHTF system performance highlights • EHTF is a market ready solution • EHTF PiP technology by Subsea](https://reader036.fdocuments.net/reader036/viewer/2022081619/60fdd966160e2f6fa60e6905/html5/thumbnails/1.jpg)
Subsea Expo Conference 2017 - Springboard session
“Electrically Heat Traced Flowline” (EHTF) improving cost and reliability for new developments
By A. Reveilloux (03-Feb-2017)
![Page 2: Subsea Expo Conference 2017 Springboard session EHTF v1 · 2017. 2. 6. · EHTF system performance highlights • EHTF is a market ready solution • EHTF PiP technology by Subsea](https://reader036.fdocuments.net/reader036/viewer/2022081619/60fdd966160e2f6fa60e6905/html5/thumbnails/2.jpg)
2Page 21-Jan-17
Industry challenges
• Improving access to reserves and very long tie-backs• Transporting fluid over long distances from seabed to surface• Preserving the integrity of pipelines all over the field operating
life• Preventing pipeline blockage due to hydrate or wax formation
![Page 3: Subsea Expo Conference 2017 Springboard session EHTF v1 · 2017. 2. 6. · EHTF system performance highlights • EHTF is a market ready solution • EHTF PiP technology by Subsea](https://reader036.fdocuments.net/reader036/viewer/2022081619/60fdd966160e2f6fa60e6905/html5/thumbnails/3.jpg)
3Page 21-Jan-17
Subsea 7: Diverse pipeline products
• Former usual passive insulation technologies
• Step change to integrate active heating technologies
Wet insulated pipes
Flexible pipes
BundlesPiP
DEH
EHTF PiP
![Page 4: Subsea Expo Conference 2017 Springboard session EHTF v1 · 2017. 2. 6. · EHTF system performance highlights • EHTF is a market ready solution • EHTF PiP technology by Subsea](https://reader036.fdocuments.net/reader036/viewer/2022081619/60fdd966160e2f6fa60e6905/html5/thumbnails/4.jpg)
4Page 21-Jan-17
“Electrically Heat Traced Flowline” (EHTF) – A key enabler
EHTF – Projects area of interest(Power 10W/m)
DEH – Projects area of interest(Power > 100W/m)
![Page 5: Subsea Expo Conference 2017 Springboard session EHTF v1 · 2017. 2. 6. · EHTF system performance highlights • EHTF is a market ready solution • EHTF PiP technology by Subsea](https://reader036.fdocuments.net/reader036/viewer/2022081619/60fdd966160e2f6fa60e6905/html5/thumbnails/5.jpg)
5Page 21-Jan-17
EHTF system overview
• Heat a pipeline section between two structures using Joule effect created by current passing in wires triplets
• Powered from topside via umbilical from inlet entry point(s)
• Versatile operational philosophy, enhanced redundancy & reliability
• Limited power consumption as a consequence of high performance insulation product (Izoflex + vacuum, ITP InTerPipe owned technology)
![Page 6: Subsea Expo Conference 2017 Springboard session EHTF v1 · 2017. 2. 6. · EHTF system performance highlights • EHTF is a market ready solution • EHTF PiP technology by Subsea](https://reader036.fdocuments.net/reader036/viewer/2022081619/60fdd966160e2f6fa60e6905/html5/thumbnails/6.jpg)
6Page 21-Jan-17
Installation
• Per conventional reeling pipelay and bundle methodologies• Standard subsea wet-mateable connection of electrical and
optical systems
![Page 7: Subsea Expo Conference 2017 Springboard session EHTF v1 · 2017. 2. 6. · EHTF system performance highlights • EHTF is a market ready solution • EHTF PiP technology by Subsea](https://reader036.fdocuments.net/reader036/viewer/2022081619/60fdd966160e2f6fa60e6905/html5/thumbnails/7.jpg)
7Page 21-Jan-17
EHTF cross section – Schematic
3 independent wires forming a triplet
Inner pipe (flowline pipe)
Outer pipe (carrier pipe)
Izoflex© - dry insulation material
Air gap at reduced gas pressure (typ. 15mbars)
Pipe-in-Pipe
FO cable (opt. for distributed temperature monitoring system)
• Typ. 12 wires arranged in 4 triplets, each one individually operated, offering most suitable solution:
– Redundancy
– Reliability
– Flexibility
![Page 8: Subsea Expo Conference 2017 Springboard session EHTF v1 · 2017. 2. 6. · EHTF system performance highlights • EHTF is a market ready solution • EHTF PiP technology by Subsea](https://reader036.fdocuments.net/reader036/viewer/2022081619/60fdd966160e2f6fa60e6905/html5/thumbnails/8.jpg)
8Page 21-Jan-17
EHTF cross section
• Wiring helix arrangement + Centralisers + Soft wrapping sheet Successfully tested in June-2015
![Page 9: Subsea Expo Conference 2017 Springboard session EHTF v1 · 2017. 2. 6. · EHTF system performance highlights • EHTF is a market ready solution • EHTF PiP technology by Subsea](https://reader036.fdocuments.net/reader036/viewer/2022081619/60fdd966160e2f6fa60e6905/html5/thumbnails/9.jpg)
9Page 21-Jan-17
System reliability performances(Comparing other market arrangements)
Time
R(t)
No spare case
Other arrangement per “system”(”1 (out of 3) system”, 1 system = 12 wires)
EHTF Arrangement per “triplet”(“4 (out of 12) triplets”)
After X years
![Page 10: Subsea Expo Conference 2017 Springboard session EHTF v1 · 2017. 2. 6. · EHTF system performance highlights • EHTF is a market ready solution • EHTF PiP technology by Subsea](https://reader036.fdocuments.net/reader036/viewer/2022081619/60fdd966160e2f6fa60e6905/html5/thumbnails/10.jpg)
10Page 21-Jan-17
EHTF modular arrangements
Config#1
Config#2
Config#1 + Config#2
Tailored as required …
• Can tailor any field arrangement
• Can accommodate almost any length / number of lines
• Extend operability of field by controlling individually heating of a flowline section (if needed)
![Page 11: Subsea Expo Conference 2017 Springboard session EHTF v1 · 2017. 2. 6. · EHTF system performance highlights • EHTF is a market ready solution • EHTF PiP technology by Subsea](https://reader036.fdocuments.net/reader036/viewer/2022081619/60fdd966160e2f6fa60e6905/html5/thumbnails/11.jpg)
11Page 21-Jan-17
EHTF PiP: An enabling technology for operators
• A technical enabler: improved access to reserves and very long tie-backs
• An economic enabler with lower CAPEX & OPEX• An economic enabler with improved production• Efficient and environment friendly system:
Preservation with EHTF is easier and cheaper than classical preservation architectures
Allow for very long tie-back with no looping requirement Access to fluid highly thermally demanding with
permanent heating Reduce or eliminate the need for chemical flow
assurance alternatives
![Page 12: Subsea Expo Conference 2017 Springboard session EHTF v1 · 2017. 2. 6. · EHTF system performance highlights • EHTF is a market ready solution • EHTF PiP technology by Subsea](https://reader036.fdocuments.net/reader036/viewer/2022081619/60fdd966160e2f6fa60e6905/html5/thumbnails/12.jpg)
12Page 21-Jan-17
Example of SURF-SPS-Topside optimisation with new technology for Angolan tie-back
Saving 500Musd circa
Standard hybrid loop case Optimised architecture using EHTF
EHTF integrated within global approach through
optimised field architecture studies
![Page 13: Subsea Expo Conference 2017 Springboard session EHTF v1 · 2017. 2. 6. · EHTF system performance highlights • EHTF is a market ready solution • EHTF PiP technology by Subsea](https://reader036.fdocuments.net/reader036/viewer/2022081619/60fdd966160e2f6fa60e6905/html5/thumbnails/13.jpg)
13Page 21-Jan-17
EHTF system performance highlights
• EHTF is a market ready solution• EHTF PiP technology by Subsea 7 provides superior
performance compared to other technologies on the market:– Easy operable system (all triplets individually piloted)
– Improved redundancy & reliability
– Flexibility for system configuration
– Modularity with access to very long tie-backs
– Electrical system technical simplicity enabled by low power/low voltage technology (order of 10 W/m; ie. <500kW on a field)
• Technology accessible to both reeling and bundle installation methods
• Availability of components through large sourcing of key components
![Page 14: Subsea Expo Conference 2017 Springboard session EHTF v1 · 2017. 2. 6. · EHTF system performance highlights • EHTF is a market ready solution • EHTF PiP technology by Subsea](https://reader036.fdocuments.net/reader036/viewer/2022081619/60fdd966160e2f6fa60e6905/html5/thumbnails/14.jpg)
14Page 21-Jan-17