3P Services, Germany

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3P Services, Germany

• Basil Hostage
• The missing link inspecting the final critical
  section of a large crude transmission and export
  system

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DGMK-Vortrag 30.04.1999

• In-line inspection
• since 1992
• MFL
• world wide
• initially specialized on small diameter tools
  (4 to 10)
• today 3 to 42

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Ocensas offshore pipeline
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Ocensas offshore pipeline
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Integrity assessment selected by Ocensa

• Internal inspection tool capable of
• Detecting corrosion and deformation
• Anomalies including dents, gouges
• and grooves

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Necessary considerations

• Cleaning
• Remove internally for old deposits of sands, wax
  and sediments.
• Restrictions identifications
• No impacts to crude oil transport program
• No receiver trap installed
• No environmental impacts
• Inspection metal loss with a High Resolution Tool
• Sizing and location accuracy. GPS location.
  Detection of anomalies on welds

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Necessary considerations

• Identification and location of mechanical
  anomalies
• Identify, locate and size dents,ovality,
  wrinkles, deformations.
• Identify possible defects in the pipe were the
  intelligent tool could be stuck.
• Processing and analyze data
• Review the data, identify defects, prioritize and
  define plan to go forward.
• Anomalies assessment according B31G and R
  Streng
• Findings repairs .
• Data validation and repairs according with the
  report and priority

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Inspection and cleaning technology

• Cleaning
• Gel
• Conventional
• BiDi
• Inspection
• Umbilical
• Conventional
• BiDi

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ILI Background

• Contacts with operators with Offshore In Line
  Inspection experience
• In Line inspection vendors
• Risk Assessment In Line Inspection Technologies
• Technologies Assessment
• Risk Assessment for Receiver Trap installation
• Facilities required, trap mobilization and
  installation, environmental impacts
• Risk Assessment for Operation
• Submarine valves, flow backward, use tanker
  storage

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ILI Background

• Risk Assessment Pigging
• Quality of cleaning, pigging alternatives
  evaluation, pigging program design
• Discussion about procedures, logistics and
  equipments required
• Operation, transport, control center,
  maintenance, environmental, Terminal and
  integrity.
• Final Risk Assessment to define best ILI and
  pigging alternative with all areas.

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Selected ILI technology

• Bidirectional Tool.
• No required receiver trap installation.
• High Resolution Tool.
• High number and density of sensors, accuracy.
• Classification ID/OD discrimination.
• Boxing,clustering and interaction analysis.

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Selected ILI technology

• Metal loss correlation with mechanical anomalies.
• Excellent accuracy and probability of detection.
• Sizing Accuracy( Manual and Auto)
• Anomalies location with (GPS)
• Inspection coverage (100)
• Interpretation and assessment of data

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Ocensas work scope

• Max preparation for cleaning
• MFL, GEO and XYZ
• Complete tracking and markering
• Safe navigation near the PLEM
• the full program

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Project conclusion

• Issues to be covered
• Contract
• Technical planning
• Logistics
• Job execution
• Data analysis reporting
• Verification
• Very ambitious time schedule

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Project conclusion

• How could this work?
• OCENSA large pipeline operator
• 3P Services small contractor, far away

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Answers

• Careful technology analysis and decision by
  OCENSA
• Contract OCENSA respected 3Ps specific needs
• High flexibility of 3P Services, since small
• OCENSA made systematic use of 3Ps experience
• High professional skills of the individuals
  involved

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Markers and antennae
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Pig launcher Coveñas
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BiDi cleaning pig
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Launching the GEO tool
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42 MFL tool
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Vertical profile of land section
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Pig speed profile
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Pig recorded pressure profile
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• Bi-directional MFL applications

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• Thanks for your attention