transmission roundtable san antonio - 2017 · 2017. 11. 3. · photo: geoilandgas.com photo:...
TRANSCRIPT
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® Registered trademarks of T.D. Williamson, Inc. in the United States and in foreign countries. © Copyright 2012
It’s all about the DataTexas Gas Association
San Antonio - 2017
Lloyd Pirtle
Transmission Roundtable
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Contents
• History of In-Line Inspection (ILI)
• ILI tools – they’ve come a long way
• Recent Advancements
• Case Study Reviews
• Why is the data important ?
• Integrity Verification Process
• Pipe Identification (PI)
• Pipe Joint Classification (PJC) in Practice
• Positive Material Identification (PMI – NDE method)
• Questions
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History of ILI
1942 War Emergency Pipeline
• Requirement for pipeline cleanliness
1. Improve product throughput
2. Control Internal Corrosion Rates
3. Improve first run success rate and data quality of ILI (after 1960s)
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History of ILI -1960s
Magnetic Flux Leakage (MFL) tool: Developed in 1965 by
Tuboscope to detect areas of metal loss
• First tool had 12 sensors (6 in the patent applied for), with
90° arc on bottom of pipe (low resolution)
• Detected internal corrosion on crude oil pipelines
• Tape Recorder used as data storage
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History of ILI – 1960s
The KALIPER® tool first developed by TDW in late 1960s
A single potentiometer provided course measurements of dents and
out-of-roundness pipe. Single channel recorder with sensors
mounted on inside of rear cups. Data recorded on pressure sensitive
paper inside the tool
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History of ILI – 1970s and 1980s
1970s - British Gas (BG) invests in their own high-resolution MFL inspection tool. Vetco and Tuboscope succeed in developing new MFL tools.
Instead of 12 sensors per tool, these new tools had approximately 1.27 cm (0.5 in) spacing, permanent magnets, and inner diameter/outer diameter (ID/OD) discrimination.
Inspection tools could detect and size anomalies
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History of ILI – 1970s and 1980s
Deformation (DEF) tools improve from single channel sensors to 6-12
channel sensors Nearly every vendor develops DEF tool with varying
levels of resolution.
Most advances to High resolution Deformation tools took place in the early
2000’s through today
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History of ILI – 1990s and 2000s
� Ultrasonic Crack Detection (UTCD): Pipeline Integrity International (PII)
develops first tool in 1994 for axial cracks.
� Circumferential MFL (CMFL) - developed for axial metal loss and crack-
like defects
� Combo-tools are introduced using multiple technologies on a single tool
– DEF + MFL
Photo: geoilandgas.com
Photo: geoilandgas.com
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History of ILI – 1990s and 2000s
Electromagnetic Acoustic Transducer (EMAT):
• Rosen and GE-PII develop first EMAT tools - crack inspections on
gas transmission pipelines
• TDW develops first EMAT tool in late 2000s
Photo: geoilandgas.comPhoto: rosen-group.com
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History of ILI – 1990s and 2000s
� Speed Control tools – allows pipelines to operate at full rate while ILI tool travels at a slower rate.
Mapping (XYZ) tools – provides GPS coordinates of pipeline
Robotic tools – difficult to pig pipelines
• Unbarred tees, low/no-flow, diameter changes,
mitre bends
Photo: diakont.com
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Technology Limitations
* *
*
**
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Introduction
Technology Limitations
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CONTINUOUS IMPROVEMENT
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How Far have we come ?
� Tool specifications� length, weight, drag efficiency, sensor density, energy capacity
& consumption, pipeline negotiability� Tool run performance� Technology packaging & combining data sets� Data sizing parameters & specifications � Data sizing accuracies, tolerances & quality� Feature Identification & characterization� New Data Analysis techniques - same or similar technologies
INLINE INSPECTION TOOLS - THEY’VE COME A LONG WAY
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Recent Advancements
Multiple Dataset (MDS) Tool
• TDW started in 2008 with 16-
inch MDS phase 1 tool
SpirALL® MFL, DEF, and GMFL
Multiple Data-Set Concept
• 5 different datasets
combined on a single tool
• Comprehensive threat
detection/identification
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Recent Advancements
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Case Study Reviews
Mechanical Damage
Selective Seam Weld Corrosion (SSWC)
T.P. Groeneveld et al. (PRCI 1991)
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Mechanical Damage
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Mechanical Damage
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Dent Prioritization
MFL
4:30
12:15
DEF
4:30
12:15
SMFL
4:30
12:15
LFM
4:30
12:15
Mechanical Damage
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• Mechanical Damage Classifier:• Distinguish dent with corrosion from dent with gouge
• Train model to recognize these types based upon ILI signal:
• Low field and High field MFL amplitude
• No. of metal loss signatures
• Location of metal loss signatures (apex, shoulder, both)
• Estimated metal loss depth
• 88 dent samples available from combination of actual ILI runs and pull tests through manufactured dents
Mechanical Damage
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Selective Seam Weld Corrosion
SMFLMFL
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MFL SMFL
Selective Seam Weld Corrosion
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MFL SMFL
TDW Confidential
Selective Seam Weld Corrosion
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Dent PrioritizationSelective Seam Weld Corrosion
• Selective Seam Weld Corrosion Classifier• Key attributes of MFL and SMFL signatures are measured in analysis software• SSWC detection algorithm:
• Detects SSWC anomalies while dismissing many corrosion anomalies near the long seam
• SSWC identification model mirrors evaluation process used by SMEs• Identification models accepts these measurements and produces a
likelihood that a candidate features is SSWC
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PITS & PINHOLE - IMPROVED SIZING
Pinhole Analysis has been validated. It increases defect-sizing certainty, and reduces the corresponding errors
associated with comparing repeat ILI runs, which improves growth-rate determination.
* Small sample size
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The Value of Data
• Establish pipeline condition
• Material Properties Confirmed for a pipeline segment
� Not limited to % of segment
� Known materials validated
� Unknown materials established
� No missing data
• Calculate safe test & operating pressures
• Test to targeted MAOP’s
• Minimize short and long term risks
• Prevent Failures
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INTEGRITY VERIFICATION
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Integrity Verification Process
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PIPE IDENTIFICATION
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Pipe Identification (PI)
PJC + PMI = PI
• Pipe Joint Classification (PJC) – When using multiple datasets
(MDS), the shared characteristics of pipe, from the same
manufacture, can be identified and used to assign each joint into
associated groups or bins
• Positive Material Identification (PMI) – Non destructive in-situ
acquisition of mechanical properties and chemical composition
correlated to API 5L for grade determination
• Pipe Identification (PI) – PJC to group pipe joints based on their
characteristics; PMI to identify material properties where they do
not exist; align PMI to PJC to close records gap for segments of
pipe or entire pipeline
• Also identifies “rogue” joints where records are not up to
date
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PIPE MANUFACTURING PROCESS
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Pipe Manufacturing Process
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MULTIPLE DATA SETS (MDS)
Pipe Joint Classification with
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Multiple Data Set Platform
Drive Section
with Odometers
SpirALL® MFL
Technology
High Field
Axial MFL
Low Field
Axial MFL
High Res
Deformation
• DEF – is a measurement of the changes of the inner bore and is sensitive to the
rolling in forming process.
• LFM – is the changes in magnetic flux at low field strengths and is sensitive to
chemical and metallurgical properties.
• MFL – less sensitive to local material differences a measure of the bulk magnetic
properties of the steel, especially circumferentially oriented markings.
• SMFL – similar to MFL but applied at an oblique direction so it detects
longitudinal aspects of material changes and long seam characteristics.
• IDOD – Designed to detect metal loss on the ID but is sensitive to ID surface
permeability changes in the radial direction.
What Each Data Set Measures
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Multiple Data Sets
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MULTIPLE DATA SETS
Pipe Joint Classification with
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PJC IN PRACTICE
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PJC in Practice: Low Field MFL (LFM)
Bin 1
Bin 2
Bin 3
Bin 4
Bin 5
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PJC in Practice: High Field MFL (MFL)
Bin 1
Bin 2
Bin 3
Bin 4
Bin 5
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PJC in Practice: SpirALL® MFL (SpirALL® MFL)
Bin 1
Bin 2
Bin 3
Bin 4
Bin 5
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PJC in Practice – The End Result po id type dist begin lat long pipe ys pipe sf pipe matl pipe manuf
T13000370 Girth Weld 9231.704 29.970838 240.647984 42000 1 ERW X42
T13000380 Girth Weld 9241.471 29.970843 240.64784 42000 1 ERW X42
T13000390 Girth Weld 9251.202 29.970848 240.647696 42000 1 ERW X42
T13000400 Girth Weld 9260.939 29.970853 240.647554 42000 1 ERW X42
T13000410 Girth Weld 9270.682 29.970849 240.647411 42000 1 ERW X42
T13000420 Girth Weld 9280.428 29.970834 240.647268 42000 1 ERW X42
T13000430 Girth Weld 9290.102 29.970833 240.647253 42000 1 ERW X42
T13000440 Girth Weld 9291.157 29.970831 240.647232
T13000450 Girth Weld 9292.56 29.970828 240.647206
T13000460 Girth Weld 9294.397 29.970826 240.647191 35900 1 ERW B
T13000470 Girth Weld 9295.416 29.970824 240.64717 35900 1 ERW B
T13000480 Girth Weld 9296.843 29.970819 240.647029 35900 1 ERW B
T13000490 Girth Weld 9306.384 29.97082 240.647002 35900 1 ERW B
T13000500 Girth Weld 9308.231 29.97082 240.646985
T13000510 Girth Weld 9309.378 29.970822 240.646936
T13000520 Girth Weld 9312.657 29.970825 240.646797
T13000530 Girth Weld 9322.011 29.970827 240.646694
T13000540 Girth Weld 9328.989 29.97083 240.64659 42000 1 ERW X42
T13000550 Girth Weld 9336.112 29.970832 240.646556 42000 1 ERW X42
T13000560 Girth Weld 9338.512 29.970839 240.646383 42000 1 ERW X42
T13000570 Girth Weld 9350.682 29.970848 240.64621 42000 1 ERW X42
T13000580 Girth Weld 9362.893 29.970857 240.646041 42000 1 ERW X42
Sections of
unidentified
pipe can be
matched to
sections with
records
Groups of
unmatched
joints can be
tested using
PMI
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POSITIVE MATERIAL
IDENTIFICATION (PMI)
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Optical Emissions Spectrometry
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Optical Emissions Spectrometry (OES)
The OES technology provides positive material property test
results for both Chemical Analysis (CA) and Carbon
Equivalency (CE).
� Spark creates non-destructive burn which creates a plasma burn
� Light is emitted and captured by the equipment to be analyzed
� Existence & concentrations of chemical components are measured
� CA & CE of that data point are determined
� Results compared with API-5L-Table 4
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Mechanical Properties Assessment (MPA)
The MPA technology provides positive material propertytest results for both EYS and ETS by applying a loadand measuring the materials response to that load.
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Mechanical Properties Assessment (MPA)
The MPA technology provides positive material property
test results for both EYS and ETS by applying a load and
measuring the materials response to that load.
� Indenter applies a load multiple times at a single location
� MPA indenter automatically measures and adjusts the load as
necessary to achieve a predetermined depth throughout the
sequential load/depth measurement processes
� final maximum depth is 6 mils (0.006”/0.152mm)
� stress/strain data is analyzed
� determine the EYS & ETS of that data point
� Results compared with API-5L-Table 6
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Positive Material Identification (PMI)
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Specifications for TDW PMI NDE Services
This PMI method has been fully vetted and validated with hundreds of
data sets and thousands of data points. The documented test data
includes internal and external validation. It can be shared in more detail
discussed further in an appropriate forum
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MATERIAL IDENTIFICATION
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PMI Applies to Fittings Identification (FI)
• Fitting Identification (FI) – The same Internal & External Validation
processes are being applied to statistically support the established
performance specifications
• Chemistry – The same OES technology and techniques are used to
establish fitting chemistry
• Yield & Tensile Strength – The same MPA technology and techniques
are used to establish fitting Yield & Tensile Strength
• Tensile is calculated from the Yield values
• Fitting Surfaces - Due to the shape of many fitting in the industry,
unique ‘fixtures’ may be required to install the MPA equipment
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Pipe Identification (PI)
PJC + PMI = PI
• Pipe Joint Classification (PJC) – When using multiple datasets (MDS)
the shared characteristics of pipe, from the same manufacture, can
be identified and used to assign each joint into associated groups or
bins
• Positive Material Identification (PMI) – Non destructive in-situ
acquisition of mechanical properties and chemical composition
correlated to API 5L for grade determination
• Pipe Identification (PI) – PJC to group pipe joints based on their
characteristics; PMI to identify material properties where they do
not exist; align PMI to PJC to close records gap for segments of pipe
or entire pipeline
• Also identifies “rogue” joints where records are not up to date
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