smart pipe engineering presentation jan 2007
TRANSCRIPT
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SMART PIPE
A Trenchless Technology SystemThat Gives A NewNew and BetterBetter Life To
Disadvantaged High Pressure Pipelines
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Objectives of ThisPresentation
Review the engineering work that establishes the
strength and durability of Smart Pipe
Identify possible rehabilitation projects where
Smart Pipe technology is most appropriate
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Engineering Basis for theSmart Pipe Concept
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Specified Max Operating Pressure/Temperature
Overall Length of Line to be Rehabilitated
Most Challenging Bend (radius + location)
Specified Safe Operating Life
Required Factor of Safety
Smart Pipe Installations Can BeTailored and Cost Optimized for
Operator Specified Criteria:
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PATENT PENDING
Schematic of Typical Design
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Smart Pipe Does Not Have OneSingle Set of Mechanical
Performance Properties:
It isIt is tailored to meet the desiredto meet the desiredoperating criteria and pipe/groundoperating criteria and pipe/ground
conditions in each individual installationconditions in each individual installation
in the most economical manner possiblein the most economical manner possible
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Smart Pipe Design Variables
Fiber types (co-helical wrap & pull-in tapes) Thickness of fabric in co-helical wrap
Co-helical wrap angle and coverage (overlap) Core pipe material and thickness
Amount of pull-in tape External coating material and mode (spray-on)
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Contrasting Mechanical Properties of
Ultra High Strength Fiber Materialswith Representative Linepipe Steel
Measured Mechanical PropertiesFiberType
Density
(lbs/in3)
Modulus
(ksi)
Strength
(ksi)
Dyneema .035 15,700 486 219
Spectra .035 15,000 435 196
Carbon .065 34,000 700 170
Kevlar .052 18,000 525 159
Vectran .050 9,000 412 130
E-Glass .092 12,000 500 86
Pipe Steel .283 29,000 100 6
Calculated Strengthto Density Ratio
(miles)
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Test Article for First Installation
8 Diameter Pipe
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Typical Failure Mode in a Smart
Pipe Burst Test (8 inch Pipe)
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Engineering Design Equation forBurst Strength Estimate Based on
Co-helically Wrapped Fabrics
2sin2p
hhb
DGMp =
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Comparison of Predicted and Actual
Burst pressures for First Installation
900
1000
1100
1200
1300
900 1000 1100 1200 1300Predicted Burst Pressure (psi)
Ac
tualBurstPressure(psi)
Eqn (2)
Corrected for HDPE
Exact Agreement
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FEA Simulation of Forces Needed toRestrain C-Form During Installation and to
Release it in the Reformation Process
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Parameters for FEA Simulations of
C-Formed Pipe Pulled ThroughBends in a Host Pipe
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Results of FEA Calculations on
C-Formed Liner Transversing BendsLimiting Combinations of Axial Force and Bend Radius
8.625 SDR 32.5
0
20
40
60
80
100
120
0.00 0.02 0.04 0.06 0.08 0.10
Host Pipe OD / Bend Radius
AxialForce(kips) Worst Orientation
Best Orientation
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Creep of Spectra Fibers Under ConstantLoad at Ambient Temperature
0
5
10
15
20
0 200 400 600 800 1000
Time (hrs)
Strain(
%)
= 44 ksi
= 65 ksi
= 87 ksi
= 44 ksi
= 65 ksi
= 87 ksi
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Nonlinear Viscoelastic-PlasticCharacterization of Creep in HighMolecular Weight PE Fibers as a
Function of Stress and Temperature
tTTCeKE
mR
tnt )( )exp()1( ++=
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Long Term Durability: Hybrid Material
Ultra high strength fibers will provide appropriateUltra high strength fibers will provide appropriate
level of pressure carrying capability, but cannot belevel of pressure carrying capability, but cannot beused for more than 5 to 10 years of serviceused for more than 5 to 10 years of service
A combination of intermingled carbon andA combination of intermingled carbon andDyneemaDyneema fibers in the form of a hybrid will providefibers in the form of a hybrid will provide
strength for 40 years of servicestrength for 40 years of service
This hybrid will also provide a high level ofThis hybrid will also provide a high level of
damage tolerance and improved handlingdamage tolerance and improved handling
properties in the manufacturing processproperties in the manufacturing process
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Calculated Strain History inDyneema/Carbon Hybrids Under
Constant Applied Loadf = Volume Fraction of Spectra
0.0
0.5
1.0
1.5
2.0
2.5
1.0E+00 1.0E+01 1.0E+02 1.0E+03 1.0E+04
Time (hrs)
Strain
(%)
f = 0.80
f = 0.65
f = 0.50
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Summary
Smart Pipe is a project specific engineeredSmart Pipe is a project specific engineered
solution for many pipeline rehabilitationsolution for many pipeline rehabilitation
applicationsapplications
Installations are cost competitive in class 1 and 2Installations are cost competitive in class 1 and 2
locations, but much more economical in class 3locations, but much more economical in class 3
and 4 compared to open trenchand 4 compared to open trench Lifetime costs are significantly less than steelLifetime costs are significantly less than steel
because corrosion protection and smart piggingbecause corrosion protection and smart pigging
are unnecessaryare unnecessary
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Current Operational Status
Portable factory for 6 to 16 pipe is operable
First Smart Pipe installation successfully
completed in July 2006
Next installation anticipated for Spring 2007
Negotiations on installations with major gas/liquid
energy companies are in progress
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Current Operational Status
(Cont.)
Communications with DoT/OPS are in progress to pave theway for waiver applications
An industry/OPS supported demonstration project is being
pursued with GTI
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Point of Contact:
Robin McIntoshRobin McIntosh
Smart Pipe Company, LPSmart Pipe Company, LP
Houston Technology CenterHouston Technology Center410 Pierce Street410 Pierce Street
Houston, TX 77002Houston, TX 77002
Phone: 713Phone: 713--858858--49234923
EE--Mail:Mail: [email protected]@smart--pipe.compipe.com
Web site:Web site: www.smartwww.smart--pipe.compipe.com
mailto:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]:[email protected] -
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The Smart Pipe Team
Thanks You for Your Kind Attention!