Smart Pipe Engineering Presentation Jan 2007

8/4/2019 Smart Pipe Engineering Presentation Jan 2007

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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!

Smart Pipe Engineering Presentation Jan 2007

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