Evolving Needs of Subsea Flow Assurance · Flow assurance 3 2016-11-30 TRELLEBORG GROUP. Enhance...
Transcript of Evolving Needs of Subsea Flow Assurance · Flow assurance 3 2016-11-30 TRELLEBORG GROUP. Enhance...
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Evolving Needs of Subsea Flow Assurance
Ajan Das, Trelleborg Offshore
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Development and Qualification
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Responding to the needs of the Industry
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Why Insulation?
Deep Water subsea production systems are reaching further and
going deeper than ever before.
Thermal Insulation is an integral part of designing an offshore
production system, especially in deep waters;
Helps maintain flowrates
Optimises productivity
Reduces processing costs
On subsea architecture is does this by;
Guaranteeing against build-up of waxes and hydrate crystals that can occur
when hot fluid (oil, gas or condensates) are exposed to low seawater
temperatures during production stops or normal production
During well shut in, for maintenance or an emergency
The greater the depth the more valuable the assest
Flow assurance
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Enhance Existing Systems
Lessons have been learned through project anomalies
Operators are looking for more robust systems to give their projects the confidence they need to succeed
“Cost” no longer front of mind when specifying systems, reliability is the key driver
Generic specifications and product testing is no longer acceptable
Improved materials specifications to meet greater demands
Enhancing existing systems
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Enhance Existing Systems
Greater long term performance screening
Improved application techniques
Advanced equipment
Unyielding control on material parameters
Increased design input / planning for material capability
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Enhance Existing Systems
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Enhance Existing Systems
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Understanding Shrinkage
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Enhance Existing Systems
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Improved application techniques
Surface preparation
Abrasion - consider each substrate
case by case
Dust checks
Pigmented primer
Primer application tests
Environmental checks
Temperature requirements
Qualification works
None transfer release agents
Extrusion process developed
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Enhance Existing Systems
SPC units
Mass flow meters
Standby & pour data log
USB download
Remote field access GPS
Mag drive pumps
Containerised for site works
Up rated / pumps / chillers
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Enhance Existing Systems
QA / QC site inspectors
Environmentally controlled lab
Typical product analysis
Hardness
Density
Specific heat capacity
Thermal conductivity
NCO contents check
Transportable – ISO 20ft
Industry First
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Enhance Existing Materials
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New Systems Development
Screening & Selection
Long Term Qualifications
Project Specific Qualifications
Working with Industry Leaders
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New Systems Development
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3-HourSteadyState
1.5-Hour Natural
Cooldown
1-Hour Forced
Cooldown1.5-Hour Steady State
1.5-Hour Steady State
250
SSD
0
Pre
ss
ure
11 Day10 Day9 Day8 Day7 Day6 Day5 Day4 Day3 Day2 Day1 Day0:000
4° C
HFT
SOT
TMxOT
120
Te
mp
era
ture
11-Day Simulated Service Test
Test Specimen Temp
Vessel Pressure
Test Days/Time
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New Systems Development
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New Systems Development
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