sesión técnica, sala km 19, multiple datasets and spirall® magnetic flux leakage
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® Registered trademarks of T.D. Williamson, Inc. in the United States and in foreign countries. © Copyright 2009
Multiple DataSets and SpirALL® MFL
Chuck Harris
Manager, Strategic Commercialization
2
Contents
• Introduction
• Multiple DataSet Platform
• Tool Configurations
• Characterization
• Conclusion
3
Introduction
4
Introduction
MFL w/IDOD
•Volumetric Anomalies
•Mill Anomalies
•Extra Metal
• Internal/External Classification • Dents
DEF
•Ovalities
•Dents
•Misalignments
•Other bore changes
Residual / Low Field Magnetization
•Permiability Anomalies – Hard spots
•Mechanical Stress
•Pipe Characteristic Changes
SMFL
•Gouging
•Narrow Axial Corrosion
•Selective Seam Corrosion
•Planar / Crack-like Seam Anomalies
•Volumetric Anomalies (pipe body
or seam)
•Mill Anomalies Dent with
residual
stress
Dent with
Volumetric Metal
Loss
Dents with Metal
Loss
Pipe Characteristic
Changes
Gouging/ML
without dent
Dent without
deformation
Planar versus Volumetric
Axially oriented Anomalies
Metal Loss in Seamless Pipe
Metal Loss crossing Girth
Welds
5
Introduction
6
Multiple DataSet Platform
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• Arms ride directly on the pipe wall for
greater sensitivity to ID changes
• Circumferential arm spacing approx.
0.25” (6.35mm) when collapsed in ID
• High resolution offers strain capability
Deformation
8 0 1 2 3 4 5 6 7 8
0
1
2
3
4
5
6
7
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Normalized Defect Length, L/A
Norm
aliz
ed D
efe
ct
Wid
th,
W/A
Axial Slotting
Axial GroovingPitting
General
Pinhole
Circum
fere
ntial S
lott
ing
Circum
fere
ntial G
roovin
g
Axial MFL
SpirALL® MFL Technology
Overlap = Enhanced
Characterization
Axial MFL + SMFL
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The Hysteresis Curve
Magnetic Properties: Remanence, Coercivity & Saturation
Dependent on: Chemistry, Manufacturing & Stress/Strains
MFL
RES
LFM
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XYZ Mapping
Output from high resolution mapping
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Tool Configurations
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Tool Configurations
24” tool: 165 inches / 13.75 feet / 4.2 meters
8” tool: 93 inches / 7.75 feet / 2.36 meters
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Characterization
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MFL SMFL
Characterization
Metal Loss crossing and within a girth weld
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MFL
Depth: 71%
Length: 0.98in / 24.88 mm
Width: 1.16in / 29.47 mm
Depth: 34%
Length: 0.70in / 17.79 mm
Width: 0.40in / 10.13 mm
Group
Depth: 71%
Length: 2.22in / 56.3 mm
Width: 1.63in / 41.37 mm
PSI: 1087
MOP = 1180 PSI
Pressure Calc basis: ASME B31G: Effective Area
(RSTRENG)
Group
Depth: 80%
Length: 1.46in / 37 mm
Width: 1.63in / 41.37 mm
PSI: 900
SMFL
Axially Extended Metal Loss
Characterization
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Volumetric versus Planar anomalies
MFL data SMFL data
Planar anomaly not
visible in MFL
Characterization
17
Characterization
longitudinal seam weld
ILI: 28% x 1.88” x 0.06” NDE: 35% x 2.00” x 0.01”
Planar / Crack-like Anomalies
MFL SMFL
longitudinal seam weld
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Metal Loss
Planar Defect –
Nothing in MFL SMFL MFL
ILI Reported: 59% Depth x 9.4” Length NDE Results: 60% Depth x 9” Length
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Characterization
Pipe Properties
LFM
MFL
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Characterization
Mechanical Damage
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0.88% ILI depth / 0.62% Field Reported
Characterization
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Characterization
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Conclusion
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Conclusion
• Individual technologies have limitations when used
independently as defined by industry standards such as NACE
SP0102-2010
• Multiple DataSets, with SpirALL® MFL Technology, is proven to
enhance characterization and sizing for most integrity threats
and:
• Overcome limitations of individual technologies
• More effectively detects and characterizes crack-like and
metal loss anomalies
• Provide a foundation for determining pipe properties
• Provide comprehensive mechanical damage assessment
and prioritization
• Eliminate unnecessary excavations
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