SlideShare a Scribd company logo
OTC 25107 
Active Heating for Life of Field Flow Assurance 
Paul McDermott & Ratnam Sathananthan,
Introduction 
• Two of the main flow assurance challenges in 
industry: Hydrate formation & Wax deposition 
• A holistic approach combining thermal, 
hydraulic, chemical and mechanical methods. 
• Over the last 20 years subsea pipeline active 
heating technologies have been considered and 
utilised for the purpose of hydrate & wax 
prevention 
Slide 2 
• Future Industry drivers: Developments in more remote areas (Arctic, 
West of Shetland, Deepwater GOM) and challenging fluid conditions 
OTC 25107 • Active Heating for Life of Field Flow Assurance • Paul McDermott
Slide 3 
Hydrate/Wax Management - Passive Thermal Control 
• Well developed Industry techniques 
Normal Operation 
OTC 25107 • Active Heating for Life of Field Flow Assurance • Paul McDermott 
Hydrate 
Management 
Wax 
Management 
Shutdown 
Flowline Insulation 
Chemical Injection 
Cooldown time 
Periodic pigging 
Shallow Water: Depressurisation 
Deepwater: Dead oil Displacement 
Flowline Insulation 
“No-touch” 
time 
Chemical Injection
Slide 4 
Hydrate/Wax Management - Active Thermal Control 
• Challenging developments becoming prevalent in industry; 
• Conventional solutions will no longer be adequate/cost effective 
• Application of subsea pipeline heating systems offers: 
 Control of system temperature at all stages of operation 
 Hydrate/Wax management strategies unconstrained by cooldown time 
 Greater operational flexibility across life of field 
Pipeline Active Heating Methods 
Hot Fluid Circulation Electrical Heating 
OTC 25107 • Active Heating for Life of Field Flow Assurance • Paul McDermott 
Bundled Pipeline 
Systems 
Pipe in Pipe 
Systems 
Direct Electrical 
Heating 
Indirect Electrical 
Heating 
 Greater offset lengths (> 50km) 
 Fluid & environmental conditions
Active Heating Systems Operating Philosophies 
Slide 5 
• Selection, design and operation of active heating systems across field 
life will be dictated by its requirement for use in: 
OTC 25107 • Active Heating for Life of Field Flow Assurance • Paul McDermott 
• Operating Scenarios: 
 Temperature maintenance: low flowing/turndown conditions 
&/or planned/unplanned shutdown 
 Fluid warmup from ambient during restart 
• Design Cases: 
 Hydrate Remediation 
 Wax Remediation – high WAT fluids (>40oC)
Hot Water Circulation Systems 
Slide 6 
Pipeline Active Heating Methods 
Hot Fluid Circulation Electrical Heating 
Bundled Pipeline 
Systems 
Pipe in Pipe Systems Direct Electrical Heating Indirect Electrical Heating 
• Heating mechanism: hot fluid circulation in Pipe-in-Pipe or Bundled 
• Technology successfully in operation for over 15 years 
OTC 25107 • Active Heating for Life of Field Flow Assurance • Paul McDermott 
Systems 
 Direct Heating  Indirect Heating
Hot Water Circulation Systems 
Slide 7 
• Design considerations (Direct v Indirect): 
 Heating Medium ΔP (Direct > Indirect) 
 Heating Medium Thermal Expansion 
• Heating duty: Standalone heater/waste heat recovery system 
• Recent designs: Heating medium 
supplied by subsea produced water re-injection 
OTC 25107 • Active Heating for Life of Field Flow Assurance • Paul McDermott 
(Bacchus, 2011)
Electrical Heating Systems 
Slide 8 
• Direct: Pipeline wall heated from resistance to electrical current applied 
OTC 25107 • Active Heating for Life of Field Flow Assurance • Paul McDermott 
through it. 
Pipeline Active Heating Methods 
Hot Fluid Circulation Electrical Heating 
Bundled Pipeline 
Systems 
Pipe in Pipe 
Systems 
Direct Electrical Heating Indirect Electrical Heating 
• Indirect: Use of separate series of cables to heat Pipeline wall 
• Selection & Design: Maximise thermal efficiency by minimising system 
heat loss 
 Open Loop 
 Pipe in Pipe 
 Electrically Heat Traced Pipe-Pipe (ETH-PiP) 
 Main Technologies 
 Main Technology
Direct Electrical Heating (DEH) Systems 
Slide 9 
Pipeline Active Heating Methods 
Hot Fluid Circulation Electrical Heating 
Bundled Pipeline Systems Pipe in Pipe Systems Direct Electrical Heating Indirect Electrical Heating 
 Wet Insulated – Open Loop  Dry Insulated - Pipe in Pipe 
• Robust designs with over 15 systems in operation (North Sea & GOM) 
• Retrofit Open Loop DEH System Capability (Ormen Lange): 
 Installed post installation in event of ice plug formation 
OTC 25107 • Active Heating for Life of Field Flow Assurance • Paul McDermott
Electrically Heat Traced - Pipe in Pipe Systems 
Slide 10 
Pipeline Active Heating Methods 
Hot Fluid Circulation Electrical Heating 
Bundled Pipeline Systems Pipe in Pipe Systems Direct Electrical Heating Indirect Electrical Heating 
• ETH-PiP maximises heating system performance by utilising: 
 Pipe in Pipe system - high performance insulation (U ≤ 1 W/m2/K) 
 Low Power Trace heating cables 
• Longer “no touch” times 
• Track record: 
• Thermal performance validated by 
JIP in 2001 
• First ETH-PiP system piloted in Islay 
Field (2012) 
OTC 25107 • Active Heating for Life of Field Flow Assurance • Paul McDermott
Current Status of Active Heating Systems 
Slide 11 
Active Heating System Longest current tie back distance Water Depths 
OTC 25107 • Active Heating for Life of Field Flow Assurance • Paul McDermott 
Hot Water Circulation Systems In Operation 
- 15km Bundled Pipeline 
- 27km Dual Flowline PiP 
Recent study shown bundle solution 
to be technically feasible at a 
distance of 50km 
- 1670m (King PiP system) 
- Bundles installed to depth 
of 410m 
Direct Electrical Heating - 44km in operation (Tyrihans) 
- 55km – in development for 
North Sea 
- 1000m – PiP Systems (In 
operation) 
- 1070m - Open Loop (In 
development for West 
Africa field) 
ETH-PiP - 6km (Successful Islay Pilot 
Scheme in North Sea) 
- 14km (In development for West 
Africa field) 
- 700m (In development for 
West Africa)
Future Trends For Active Heating Systems 
Slide 12 
ETH PiP DEH HWC 
OTC 25107 • Active Heating for Life of Field Flow Assurance • Paul McDermott 
40 
35 
30 
25 
20 
15 
10 
5 
0 
1999 2005 2013 2040 
No. in Operation 
Year 
Deep Water Long 
Distance Smart 
Fields in Operation 
is common place 
with substantial 
experience in use 
of: 
Low power high 
thermal 
performance ETH 
PiP technology 
utilising 
monitoring 
systems to 
improve system 
performance 
• Trends from Past, Present and Future?
Summary 
Slide 13 
• Past to Present: Over last 15 years heating systems have evolved 
from a novel technology to more commonly and robustly used. 
• Next evolution of active heating systems: Deployment of Electrical 
Trace Heating Pipe in Pipe systems – low power and high system 
thermal performance. 
• Future: Crucial component in life of field flow assurance strategies for 
common future subsea production systems with much longer step out 
distances and challenging fluid/environmental conditions. 
• Continued technology innovation & qualification: ensure heating 
systems may be integrated with other developing technologies to 
meet future industry flow assurance challenges. 
OTC 25107 • Active Heating for Life of Field Flow Assurance • Paul McDermott
Acknowledgements / Thank You / Questions 
Slide 14

More Related Content

What's hot

Controlling Post-Completion Flow in Steam-Assisted Gravity Drainage Wells
Controlling Post-Completion Flow  in Steam-Assisted Gravity Drainage WellsControlling Post-Completion Flow  in Steam-Assisted Gravity Drainage Wells
Controlling Post-Completion Flow in Steam-Assisted Gravity Drainage Wells
Baker Hughes
 
J Ray Firsts
J Ray FirstsJ Ray Firsts
J Ray Firsts
MyLast1
 
Application of intelligent well completion in optimizing production
Application of intelligent well completion in optimizing productionApplication of intelligent well completion in optimizing production
Application of intelligent well completion in optimizing production
Chirag Vanecha
 
Intelligent well completions
Intelligent well completionsIntelligent well completions
Intelligent well completions
Nikhil Barshettiwar
 
Sparrows Point Country Club Irrigation System Evaluation
Sparrows Point Country Club Irrigation System EvaluationSparrows Point Country Club Irrigation System Evaluation
Sparrows Point Country Club Irrigation System Evaluation
tbloom_golf
 
Intelligent well completio nm
Intelligent well completio nmIntelligent well completio nm
Intelligent well completio nm
basil_c
 
Produced water treatment_presentation
Produced water treatment_presentationProduced water treatment_presentation
Produced water treatment_presentation
Sakhr R&D Center
 
Intelligent well completion
Intelligent well completionIntelligent well completion
Intelligent well completion
Akshaya Mishra
 
Aqua-Barrier Water Inflated Dams Literature
Aqua-Barrier Water Inflated Dams LiteratureAqua-Barrier Water Inflated Dams Literature
Aqua-Barrier Water Inflated Dams Literature
Darren Miller
 
Water transportation to drilling sites
Water transportation to drilling sitesWater transportation to drilling sites
Water transportation to drilling sites
Martin Preene
 
Intelligent Fields: A New Era for Oil and Gas Field Development
Intelligent Fields: A New Era for Oil and Gas Field DevelopmentIntelligent Fields: A New Era for Oil and Gas Field Development
Intelligent Fields: A New Era for Oil and Gas Field Development
fhmutairi
 
RV Thuwal - Refit project overview by Maritime Survey Australia
RV Thuwal - Refit project overview by Maritime Survey AustraliaRV Thuwal - Refit project overview by Maritime Survey Australia
RV Thuwal - Refit project overview by Maritime Survey Australia
MichaelUberti
 
Lecture44
Lecture44Lecture44
Lecture44
thinknice
 
Multilateral Systems, pumpsandpipesmdhc
Multilateral Systems, pumpsandpipesmdhcMultilateral Systems, pumpsandpipesmdhc
Multilateral Systems, pumpsandpipesmdhc
tmhsweb
 
OSX1 FPSO Buyers Rev2
OSX1 FPSO Buyers Rev2OSX1 FPSO Buyers Rev2
OSX1 FPSO Buyers Rev2
Anthony Brewer
 
FPSO Redeployment
FPSO RedeploymentFPSO Redeployment
FPSO Redeployment
Dan Benson
 
Life extension of aging petroleum production facilities offshore
Life extension of aging petroleum production facilities offshoreLife extension of aging petroleum production facilities offshore
Life extension of aging petroleum production facilities offshore
E.ON Exploration & Production
 
Rational Artificial Lift Selection by Mike Berry
Rational Artificial Lift Selection by Mike BerryRational Artificial Lift Selection by Mike Berry
Rational Artificial Lift Selection by Mike Berry
Daniel Matranga
 
140717 artificial lift
140717 artificial lift140717 artificial lift
140717 artificial lift
Ali Okasha
 
Offshore Engineering Kavin Engneering Fpso Corporate Profile 2012
Offshore Engineering Kavin Engneering Fpso Corporate Profile 2012Offshore Engineering Kavin Engneering Fpso Corporate Profile 2012
Offshore Engineering Kavin Engneering Fpso Corporate Profile 2012
ggurudev
 

What's hot (20)

Controlling Post-Completion Flow in Steam-Assisted Gravity Drainage Wells
Controlling Post-Completion Flow  in Steam-Assisted Gravity Drainage WellsControlling Post-Completion Flow  in Steam-Assisted Gravity Drainage Wells
Controlling Post-Completion Flow in Steam-Assisted Gravity Drainage Wells
 
J Ray Firsts
J Ray FirstsJ Ray Firsts
J Ray Firsts
 
Application of intelligent well completion in optimizing production
Application of intelligent well completion in optimizing productionApplication of intelligent well completion in optimizing production
Application of intelligent well completion in optimizing production
 
Intelligent well completions
Intelligent well completionsIntelligent well completions
Intelligent well completions
 
Sparrows Point Country Club Irrigation System Evaluation
Sparrows Point Country Club Irrigation System EvaluationSparrows Point Country Club Irrigation System Evaluation
Sparrows Point Country Club Irrigation System Evaluation
 
Intelligent well completio nm
Intelligent well completio nmIntelligent well completio nm
Intelligent well completio nm
 
Produced water treatment_presentation
Produced water treatment_presentationProduced water treatment_presentation
Produced water treatment_presentation
 
Intelligent well completion
Intelligent well completionIntelligent well completion
Intelligent well completion
 
Aqua-Barrier Water Inflated Dams Literature
Aqua-Barrier Water Inflated Dams LiteratureAqua-Barrier Water Inflated Dams Literature
Aqua-Barrier Water Inflated Dams Literature
 
Water transportation to drilling sites
Water transportation to drilling sitesWater transportation to drilling sites
Water transportation to drilling sites
 
Intelligent Fields: A New Era for Oil and Gas Field Development
Intelligent Fields: A New Era for Oil and Gas Field DevelopmentIntelligent Fields: A New Era for Oil and Gas Field Development
Intelligent Fields: A New Era for Oil and Gas Field Development
 
RV Thuwal - Refit project overview by Maritime Survey Australia
RV Thuwal - Refit project overview by Maritime Survey AustraliaRV Thuwal - Refit project overview by Maritime Survey Australia
RV Thuwal - Refit project overview by Maritime Survey Australia
 
Lecture44
Lecture44Lecture44
Lecture44
 
Multilateral Systems, pumpsandpipesmdhc
Multilateral Systems, pumpsandpipesmdhcMultilateral Systems, pumpsandpipesmdhc
Multilateral Systems, pumpsandpipesmdhc
 
OSX1 FPSO Buyers Rev2
OSX1 FPSO Buyers Rev2OSX1 FPSO Buyers Rev2
OSX1 FPSO Buyers Rev2
 
FPSO Redeployment
FPSO RedeploymentFPSO Redeployment
FPSO Redeployment
 
Life extension of aging petroleum production facilities offshore
Life extension of aging petroleum production facilities offshoreLife extension of aging petroleum production facilities offshore
Life extension of aging petroleum production facilities offshore
 
Rational Artificial Lift Selection by Mike Berry
Rational Artificial Lift Selection by Mike BerryRational Artificial Lift Selection by Mike Berry
Rational Artificial Lift Selection by Mike Berry
 
140717 artificial lift
140717 artificial lift140717 artificial lift
140717 artificial lift
 
Offshore Engineering Kavin Engneering Fpso Corporate Profile 2012
Offshore Engineering Kavin Engneering Fpso Corporate Profile 2012Offshore Engineering Kavin Engneering Fpso Corporate Profile 2012
Offshore Engineering Kavin Engneering Fpso Corporate Profile 2012
 

Similar to 14OTC 25107-Active Heating for Life of Field Flow Assurance

GI Energy - Rehau PowerPoint June 2015
GI Energy - Rehau PowerPoint June 2015GI Energy - Rehau PowerPoint June 2015
GI Energy - Rehau PowerPoint June 2015
GI Energy
 
Gi Energy Renewable Energy Opportunities with Infrastructure Projects June 2015
Gi Energy Renewable Energy Opportunities with Infrastructure Projects June 2015Gi Energy Renewable Energy Opportunities with Infrastructure Projects June 2015
Gi Energy Renewable Energy Opportunities with Infrastructure Projects June 2015
GI Energy
 
Gi energy renewable energy opportunities with infrastructure projects june ...
Gi energy   renewable energy opportunities with infrastructure projects june ...Gi energy   renewable energy opportunities with infrastructure projects june ...
Gi energy renewable energy opportunities with infrastructure projects june ...
GI Energy
 
Energy recovery presentation
Energy recovery presentationEnergy recovery presentation
Energy recovery presentation
plugtrab
 
User innovation in sustainable home energy technologies
User innovation in sustainable home energy technologiesUser innovation in sustainable home energy technologies
User innovation in sustainable home energy technologies
Jouni K. Juntunen
 
Bahniuk Utility Job
Bahniuk Utility JobBahniuk Utility Job
Bahniuk Utility Job
David Bahniuk
 
Economic and eco-friendly heating solutions
Economic and eco-friendly heating solutionsEconomic and eco-friendly heating solutions
Economic and eco-friendly heating solutions
A.T.E. Private Limited
 
Energy Efficient Server Rooms at the University of Cambridge
Energy Efficient Server Rooms at the University of CambridgeEnergy Efficient Server Rooms at the University of Cambridge
Energy Efficient Server Rooms at the University of Cambridge
JISC's Green ICT Programme
 
Industrial heat tracing solutions
Industrial heat tracing solutionsIndustrial heat tracing solutions
Industrial heat tracing solutions
ie-net ingenieursvereniging vzw
 
March3 2009-workshop-slides
March3 2009-workshop-slidesMarch3 2009-workshop-slides
March3 2009-workshop-slides
SWITCHOntario
 
Energy Trust New Buildings: Technical Updates for Modelers and Engineers
Energy Trust New Buildings: Technical Updates for Modelers and EngineersEnergy Trust New Buildings: Technical Updates for Modelers and Engineers
Energy Trust New Buildings: Technical Updates for Modelers and Engineers
energytrustor
 
High Concentration Photovoltaic (HCPV) Technology
High Concentration Photovoltaic (HCPV) TechnologyHigh Concentration Photovoltaic (HCPV) Technology
High Concentration Photovoltaic (HCPV) Technology
ACX
 
Geo thermal system
 Geo thermal system Geo thermal system
Geo thermal system
Dheeraj patidar
 
Donald MacBrayne, Scottish Water Horizons – Commercial Renewable and Energy S...
Donald MacBrayne, Scottish Water Horizons – Commercial Renewable and Energy S...Donald MacBrayne, Scottish Water Horizons – Commercial Renewable and Energy S...
Donald MacBrayne, Scottish Water Horizons – Commercial Renewable and Energy S...
Invest Northern Ireland
 
Energy Storage: New Capabilities for the Electric Grid – The Tehachapi Energy...
Energy Storage: New Capabilities for the Electric Grid – The Tehachapi Energy...Energy Storage: New Capabilities for the Electric Grid – The Tehachapi Energy...
Energy Storage: New Capabilities for the Electric Grid – The Tehachapi Energy...
kevinfok
 
Hydronic heating & cooling system design presentation
Hydronic heating &  cooling system design presentationHydronic heating &  cooling system design presentation
Hydronic heating & cooling system design presentation
kshitiz pandit
 
March5 2009-workshop-slides
March5 2009-workshop-slidesMarch5 2009-workshop-slides
March5 2009-workshop-slides
SWITCHOntario
 
Thermoelectricpresentation
ThermoelectricpresentationThermoelectricpresentation
Thermoelectricpresentation
Zondits
 
Control Valves for the Power Generation Industry" A Product and Applications ...
Control Valves for the Power Generation Industry" A Product and Applications ...Control Valves for the Power Generation Industry" A Product and Applications ...
Control Valves for the Power Generation Industry" A Product and Applications ...
Belilove Company-Engineers
 
Calorex. What We do, We Do Well
Calorex. What We do, We Do WellCalorex. What We do, We Do Well
Calorex. What We do, We Do Well
Tony Sweet
 

Similar to 14OTC 25107-Active Heating for Life of Field Flow Assurance (20)

GI Energy - Rehau PowerPoint June 2015
GI Energy - Rehau PowerPoint June 2015GI Energy - Rehau PowerPoint June 2015
GI Energy - Rehau PowerPoint June 2015
 
Gi Energy Renewable Energy Opportunities with Infrastructure Projects June 2015
Gi Energy Renewable Energy Opportunities with Infrastructure Projects June 2015Gi Energy Renewable Energy Opportunities with Infrastructure Projects June 2015
Gi Energy Renewable Energy Opportunities with Infrastructure Projects June 2015
 
Gi energy renewable energy opportunities with infrastructure projects june ...
Gi energy   renewable energy opportunities with infrastructure projects june ...Gi energy   renewable energy opportunities with infrastructure projects june ...
Gi energy renewable energy opportunities with infrastructure projects june ...
 
Energy recovery presentation
Energy recovery presentationEnergy recovery presentation
Energy recovery presentation
 
User innovation in sustainable home energy technologies
User innovation in sustainable home energy technologiesUser innovation in sustainable home energy technologies
User innovation in sustainable home energy technologies
 
Bahniuk Utility Job
Bahniuk Utility JobBahniuk Utility Job
Bahniuk Utility Job
 
Economic and eco-friendly heating solutions
Economic and eco-friendly heating solutionsEconomic and eco-friendly heating solutions
Economic and eco-friendly heating solutions
 
Energy Efficient Server Rooms at the University of Cambridge
Energy Efficient Server Rooms at the University of CambridgeEnergy Efficient Server Rooms at the University of Cambridge
Energy Efficient Server Rooms at the University of Cambridge
 
Industrial heat tracing solutions
Industrial heat tracing solutionsIndustrial heat tracing solutions
Industrial heat tracing solutions
 
March3 2009-workshop-slides
March3 2009-workshop-slidesMarch3 2009-workshop-slides
March3 2009-workshop-slides
 
Energy Trust New Buildings: Technical Updates for Modelers and Engineers
Energy Trust New Buildings: Technical Updates for Modelers and EngineersEnergy Trust New Buildings: Technical Updates for Modelers and Engineers
Energy Trust New Buildings: Technical Updates for Modelers and Engineers
 
High Concentration Photovoltaic (HCPV) Technology
High Concentration Photovoltaic (HCPV) TechnologyHigh Concentration Photovoltaic (HCPV) Technology
High Concentration Photovoltaic (HCPV) Technology
 
Geo thermal system
 Geo thermal system Geo thermal system
Geo thermal system
 
Donald MacBrayne, Scottish Water Horizons – Commercial Renewable and Energy S...
Donald MacBrayne, Scottish Water Horizons – Commercial Renewable and Energy S...Donald MacBrayne, Scottish Water Horizons – Commercial Renewable and Energy S...
Donald MacBrayne, Scottish Water Horizons – Commercial Renewable and Energy S...
 
Energy Storage: New Capabilities for the Electric Grid – The Tehachapi Energy...
Energy Storage: New Capabilities for the Electric Grid – The Tehachapi Energy...Energy Storage: New Capabilities for the Electric Grid – The Tehachapi Energy...
Energy Storage: New Capabilities for the Electric Grid – The Tehachapi Energy...
 
Hydronic heating & cooling system design presentation
Hydronic heating &  cooling system design presentationHydronic heating &  cooling system design presentation
Hydronic heating & cooling system design presentation
 
March5 2009-workshop-slides
March5 2009-workshop-slidesMarch5 2009-workshop-slides
March5 2009-workshop-slides
 
Thermoelectricpresentation
ThermoelectricpresentationThermoelectricpresentation
Thermoelectricpresentation
 
Control Valves for the Power Generation Industry" A Product and Applications ...
Control Valves for the Power Generation Industry" A Product and Applications ...Control Valves for the Power Generation Industry" A Product and Applications ...
Control Valves for the Power Generation Industry" A Product and Applications ...
 
Calorex. What We do, We Do Well
Calorex. What We do, We Do WellCalorex. What We do, We Do Well
Calorex. What We do, We Do Well
 

14OTC 25107-Active Heating for Life of Field Flow Assurance

  • 1. OTC 25107 Active Heating for Life of Field Flow Assurance Paul McDermott & Ratnam Sathananthan,
  • 2. Introduction • Two of the main flow assurance challenges in industry: Hydrate formation & Wax deposition • A holistic approach combining thermal, hydraulic, chemical and mechanical methods. • Over the last 20 years subsea pipeline active heating technologies have been considered and utilised for the purpose of hydrate & wax prevention Slide 2 • Future Industry drivers: Developments in more remote areas (Arctic, West of Shetland, Deepwater GOM) and challenging fluid conditions OTC 25107 • Active Heating for Life of Field Flow Assurance • Paul McDermott
  • 3. Slide 3 Hydrate/Wax Management - Passive Thermal Control • Well developed Industry techniques Normal Operation OTC 25107 • Active Heating for Life of Field Flow Assurance • Paul McDermott Hydrate Management Wax Management Shutdown Flowline Insulation Chemical Injection Cooldown time Periodic pigging Shallow Water: Depressurisation Deepwater: Dead oil Displacement Flowline Insulation “No-touch” time Chemical Injection
  • 4. Slide 4 Hydrate/Wax Management - Active Thermal Control • Challenging developments becoming prevalent in industry; • Conventional solutions will no longer be adequate/cost effective • Application of subsea pipeline heating systems offers:  Control of system temperature at all stages of operation  Hydrate/Wax management strategies unconstrained by cooldown time  Greater operational flexibility across life of field Pipeline Active Heating Methods Hot Fluid Circulation Electrical Heating OTC 25107 • Active Heating for Life of Field Flow Assurance • Paul McDermott Bundled Pipeline Systems Pipe in Pipe Systems Direct Electrical Heating Indirect Electrical Heating  Greater offset lengths (> 50km)  Fluid & environmental conditions
  • 5. Active Heating Systems Operating Philosophies Slide 5 • Selection, design and operation of active heating systems across field life will be dictated by its requirement for use in: OTC 25107 • Active Heating for Life of Field Flow Assurance • Paul McDermott • Operating Scenarios:  Temperature maintenance: low flowing/turndown conditions &/or planned/unplanned shutdown  Fluid warmup from ambient during restart • Design Cases:  Hydrate Remediation  Wax Remediation – high WAT fluids (>40oC)
  • 6. Hot Water Circulation Systems Slide 6 Pipeline Active Heating Methods Hot Fluid Circulation Electrical Heating Bundled Pipeline Systems Pipe in Pipe Systems Direct Electrical Heating Indirect Electrical Heating • Heating mechanism: hot fluid circulation in Pipe-in-Pipe or Bundled • Technology successfully in operation for over 15 years OTC 25107 • Active Heating for Life of Field Flow Assurance • Paul McDermott Systems  Direct Heating  Indirect Heating
  • 7. Hot Water Circulation Systems Slide 7 • Design considerations (Direct v Indirect):  Heating Medium ΔP (Direct > Indirect)  Heating Medium Thermal Expansion • Heating duty: Standalone heater/waste heat recovery system • Recent designs: Heating medium supplied by subsea produced water re-injection OTC 25107 • Active Heating for Life of Field Flow Assurance • Paul McDermott (Bacchus, 2011)
  • 8. Electrical Heating Systems Slide 8 • Direct: Pipeline wall heated from resistance to electrical current applied OTC 25107 • Active Heating for Life of Field Flow Assurance • Paul McDermott through it. Pipeline Active Heating Methods Hot Fluid Circulation Electrical Heating Bundled Pipeline Systems Pipe in Pipe Systems Direct Electrical Heating Indirect Electrical Heating • Indirect: Use of separate series of cables to heat Pipeline wall • Selection & Design: Maximise thermal efficiency by minimising system heat loss  Open Loop  Pipe in Pipe  Electrically Heat Traced Pipe-Pipe (ETH-PiP)  Main Technologies  Main Technology
  • 9. Direct Electrical Heating (DEH) Systems Slide 9 Pipeline Active Heating Methods Hot Fluid Circulation Electrical Heating Bundled Pipeline Systems Pipe in Pipe Systems Direct Electrical Heating Indirect Electrical Heating  Wet Insulated – Open Loop  Dry Insulated - Pipe in Pipe • Robust designs with over 15 systems in operation (North Sea & GOM) • Retrofit Open Loop DEH System Capability (Ormen Lange):  Installed post installation in event of ice plug formation OTC 25107 • Active Heating for Life of Field Flow Assurance • Paul McDermott
  • 10. Electrically Heat Traced - Pipe in Pipe Systems Slide 10 Pipeline Active Heating Methods Hot Fluid Circulation Electrical Heating Bundled Pipeline Systems Pipe in Pipe Systems Direct Electrical Heating Indirect Electrical Heating • ETH-PiP maximises heating system performance by utilising:  Pipe in Pipe system - high performance insulation (U ≤ 1 W/m2/K)  Low Power Trace heating cables • Longer “no touch” times • Track record: • Thermal performance validated by JIP in 2001 • First ETH-PiP system piloted in Islay Field (2012) OTC 25107 • Active Heating for Life of Field Flow Assurance • Paul McDermott
  • 11. Current Status of Active Heating Systems Slide 11 Active Heating System Longest current tie back distance Water Depths OTC 25107 • Active Heating for Life of Field Flow Assurance • Paul McDermott Hot Water Circulation Systems In Operation - 15km Bundled Pipeline - 27km Dual Flowline PiP Recent study shown bundle solution to be technically feasible at a distance of 50km - 1670m (King PiP system) - Bundles installed to depth of 410m Direct Electrical Heating - 44km in operation (Tyrihans) - 55km – in development for North Sea - 1000m – PiP Systems (In operation) - 1070m - Open Loop (In development for West Africa field) ETH-PiP - 6km (Successful Islay Pilot Scheme in North Sea) - 14km (In development for West Africa field) - 700m (In development for West Africa)
  • 12. Future Trends For Active Heating Systems Slide 12 ETH PiP DEH HWC OTC 25107 • Active Heating for Life of Field Flow Assurance • Paul McDermott 40 35 30 25 20 15 10 5 0 1999 2005 2013 2040 No. in Operation Year Deep Water Long Distance Smart Fields in Operation is common place with substantial experience in use of: Low power high thermal performance ETH PiP technology utilising monitoring systems to improve system performance • Trends from Past, Present and Future?
  • 13. Summary Slide 13 • Past to Present: Over last 15 years heating systems have evolved from a novel technology to more commonly and robustly used. • Next evolution of active heating systems: Deployment of Electrical Trace Heating Pipe in Pipe systems – low power and high system thermal performance. • Future: Crucial component in life of field flow assurance strategies for common future subsea production systems with much longer step out distances and challenging fluid/environmental conditions. • Continued technology innovation & qualification: ensure heating systems may be integrated with other developing technologies to meet future industry flow assurance challenges. OTC 25107 • Active Heating for Life of Field Flow Assurance • Paul McDermott
  • 14. Acknowledgements / Thank You / Questions Slide 14