riser & flowline intervention using new composite coil tubing … › documents ›...
TRANSCRIPT
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Donald Ballantyne – Commercial Director Paradigm Flow Services Ltd
Riser & Flowline Intervention Using New Composite Coil Tubing Technology
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MAN COUNT:
4 Two Binders, crew of two on each
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MAN COUNT:
12 Four following each binder making sheeves into Stooks
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MAN COUNT:
18 2 Tractors transporting stooks to farm, crew of 3 each
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MAN COUNT:
22 2 men building each stack, two crews
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MAN COUNT:
1 1 man with one of these…
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MAN COUNT:
1 …and one of these
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DSV
Around 120 People
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PRESENTATION SUMMARY
• Paradigm Flow Services specialise in the supply of innovative technical solutions to solve issues with blockages or restrictions to process or utility flow.
• We have successfully deployed our services at a number of international locations. To date our services have been used in upstream offshore O&G, but are now involved in midstream.
• Development of our own patented technology has underpinned our success and market position. We will continue to develop and improve our technology.
• Flexi Coil is miniature coil tubing that has been specifically design for live intervention to risers, flowlines & pipelines. The presentation uses a case study to demonstrate the application and unique ability of the technology.
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FLEXI-COIL
Sand removal from FPSO riser – West Africa
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ESTIMATED COST SAVINGS
A West African O&G company operates a deepwater >500m FPSO in the Gulf of Guinea. A subsea tie back oilwell was a known sand producer. An increase in production was achieved, followed by a complete loss of surface pressure and zero flow. IT was suspected that a blockage due to sand accumulation was the root cause.
The initial proposals to locate and clear the blockage were at least 5x more expensive than Flexi-Coil solution deployed, but never fully costed due to:
1. Cost escalation.
2. The need to shutdown FPSO with a loss of 35,000 barrels per day for a a number of weeks possibly months
3. The finding of Flexi-Coil as a potential solution.
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EXAMPLE OF EXISTING TECHNOLOGY COIL TUBING FOR FPSO DEPLOYMENT
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STANDARD COIL SPREAD
Standard coil tubing is used extensively in the downhole and well intervention market. It uses steel coil and is designed for deep vertical depth and pressures.
Steel coil reel >12T load
Coil run and gooseneck
Coil Injector & Pressure Control
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PREVIOUS FPSO COIL TUBING – FPSO P43
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W. AFRICA FPSO – SAND PLUGGED RISER
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250m
300m
350m
400m
450m
500m
550m 600m 650m 700m 750m
-580.0
-480.0
-380.0
-280.0
-180.0
-80.0
20.0
0.0 50.0 100.0 150.0 200.0 250.0 300.0 350.0 400.0 450.0
Dept
h of
Ris
er (m
)
Distance from Vessel (m)
200m
EXTEND OF BLOCKAGE IN RISER
SEA BED 549m
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REMOTE PRESSURE CONTROL WITH FLEXIBLE LUBRICATOR
CRANE AND
LAYDOWN RISER
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FLEXI-COIL EQUIPMENT
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FLEXI-COIL EQUIPMENT
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FLEXI-COIL EQUIPMENT
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CONNECTION TO RISER
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FPSO DECK
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FLEXI-COIL
250m
300m
350m
400m
450m
500m
550m 600m 650m 700m 750m
-580.0
-480.0
-380.0
-280.0
-180.0
-80.0
20.0
0.0 50.0 100.0 150.0 200.0 250.0 300.0 350.0 400.0 450.0
Dept
h of
Ris
er (m
)
Distance from Vessel (m)
200m
[video removed for pdf]
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8M3 OF SAND REMOVED
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8M3 OF SAND REMOVED
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SAND REMOVAL
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SUCCESS!
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LESSONS LEARNED
• The power of Capstan Friction
• Its all about the pipe
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THE POWER OF CAPSTAN FRICTION
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WHERE DO WE GET CAPSTAN FRICTION ?
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THE PROBLEM WITH CAPSTAN FRICTION
Pull Force
For steel pipe 1km into pipeline in North Sea Pull force = 49,000kg For composite pipe 1km into pipeline in North Sea
Pull force = 2570kg
x e = Hanging Tension Co-efficient of Friction X Angle
150m
1000m
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ABRASIVE WEAR DUE TO STEEL COIL
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HIGH FRICTION
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LOWER FRICTION
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BEND STIFFNESS TOO LOW (COMPRESSIVE FAILURE)
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TOO FLEXIBLE (COMPRESSIVE FAILURE)
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TOO HEAVY (TENSILE FAILURE)
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KEY LESSONS LEARNT
SELECTION OF THE RIGHT COIL FOR THE PROJECT
Too Stiff & Heavy
Too
Flexible
Too Heavy &
Low Tensile strength
Very Nice
Getting There!
Just Right!
4-6kg/m 2.1kg/m 0.6kg/m
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REVOLUTION MOTOR
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REVOLUTION MOTOR
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THE REVOLUTION MOTOR
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REMOVING SAND, WAX AND ASPHALTENE
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FLOWLINE DE-COMMISSIONING UKCS 2015
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FLOWLINE DE-COMMISSIONING UKCS 2015
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FLOWLINE DE-COMMISSIONING UKCS 2015
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FLOWLINE DE-COMMISSIONING UKCS 2015
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FLOWLINE DE-COMMISSIONING UKCS 2015
Tie-in Point At
Hot Tap
Pulling weight from 855m and over 360° of bends
Less than 250kg
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DE-OILING
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SO TO SUM UP
• Using the Revolution Motor to reach deep into Flowline.
• Using the right pipe to avoid large equipment and abrasive wear.
• Helps us overcome capstan friction problem.
• Allowing us to set up pressurised intervention equipment where it wasn’t possible before.
• Reduce need for Vessel/Rig Intervention reducing costs of pipeline blockages, restrictions and de-commissioning.
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SO TO SUM UP
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IT’S TIME FOR A PARADIGM SHIFT IN FLOWLINE INTERVENTION